wordrona
  • AC power: Alternating current power, which periodically reverses direction.
  • Acoustic Absorption: The reduction of sound energy as it passes through a material or system.
  • Acoustic Echo Cancellation: The process of removing echo from a sound signal.
  • Acoustic Emission: The release of energy in the form of sound waves from a source.
  • Acoustic Impedance: The resistance offered by a material to the passage of sound waves through it.
  • Acoustic Insulation: The use of materials or design to prevent the transmission of sound through a structure.
  • Acoustic Resonance: The phenomenon of increased sound amplitude at certain frequencies in a system or structure.
  • Advanced Metering Infrastructure (AMI): A system that includes smart meters, communication systems, and software for monitoring and controlling energy consumption at the customer level.
  • Audio Frequency: The range of frequencies audible to the human ear, typically 20 Hz to 20,000 Hz.
  • Base Load: The minimum power demand of an electrical system that must be met at all times.
  • Battery Electric Vehicle (BEV): A vehicle that is powered by electricity stored in a battery, with no internal combustion engine.
  • Battery Energy Storage System (BESS): A system that stores electricity in batteries for later use, used for backup power, load leveling, and peak shaving.
  • Battery Management System (BMS): A system that monitors and manages the performance and safety of the battery in an electric vehicle.
  • Biomass Energy: Energy generated from organic matter such as wood, crops, and waste, typically through the use of combustion or fermentation.
  • Biomass: Organic matter that can be used to generate electricity, such as wood, crops, and waste materials.
  • Blackout: A widespread power outage that affects a large area or region.
  • Brownout: A reduction in voltage in an electrical power supply, resulting in a decrease in the amount of power available.
  • Building Automation System (BAS): A computer-based system that is used to control and monitor various building systems, such as lighting, HVAC, and security.
  • Building Automation System (BAS): A system that controls and monitors the mechanical and electrical systems in a building, such as heating, ventilation, and air conditioning.
  • Building Energy Management System (BEMS): A computer-based system that is used to monitor and control the energy consumption of a building.
  • Building Energy Rating (BER): A measure of the energy efficiency of a building, typically expressed as a letter or numeric rating.
  • Building Information Modeling (BIM): A digital representation of a building’s physical and functional characteristics, used for design, construction, and maintenance.
  • Bullet Point List All Hertz Terminology and Related Definitions.
  • Bullet Point List All Power Terminology and Related Definitions.
  • Carbon Cap and Trade: A system in which companies or organizations are given a cap on the amount of greenhouse gases they can emit, and can buy or sell credits to emit more or less.
  • Carbon Credit: A permit that allows a company or organization to emit a certain amount of greenhouse gases.
  • Carbon Dioxide Equivalent (CO2e): A measure of the total greenhouse gas emissions, taking into account the different global warming potentials of different gases.
  • Carbon Footprint: A measure of the total greenhouse gas emissions caused by an individual, organization, or product.
  • Carbon Footprint: The total amount of greenhouse gases emitted into the atmosphere as a result of human activities, such as energy production and transportation.
  • Carbon Neutral: A term used to describe an energy source or system that does not emit greenhouse gases or results in a net zero emissions of greenhouse gases.
  • Carbon Neutral: Having a net zero carbon footprint, typically achieved by offsetting emissions through carbon credits or other methods.
  • Carbon Offset: A reduction in greenhouse gas emissions that is used to compensate for emissions from another source.
  • Carbon Sequestration: The process of capturing and storing carbon dioxide in order to reduce its impact on the environment.
  • Carbon Tax: A tax imposed on the carbon content of fossil fuels, designed to reduce greenhouse gas emissions and promote the use of renewable energy sources.
  • Carbon Tax: A tax on the emission of greenhouse gases, such as carbon dioxide.
  • Circuit breaker: A device that interrupts the flow of electricity in an electrical circuit in case of an overcurrent or short circuit.
  • Clean Energy Standard (CES): A policy that requires a certain percentage of electricity to be generated from clean energy sources.
  • Clean Energy: Energy that has a low environmental impact, typically generated from renewable sources.
  • Climate Change: The long-term changes in temperature, precipitation, wind patterns, and other measures of climate caused by human activity, particularly the burning of fossil fuels.
  • Coefficient of Performance (COP): A measure of the efficiency of a heat pump, typically used for heating systems.
  • Co-generation: A system that generates electricity and useful thermal energy, such as heating and cooling, from the same source.
  • Combined Heat and Power (CHP): A system that generates electricity and captures the waste heat to provide useful thermal energy, such as heating and cooling.
  • Combined Heat and Power (CHP): The simultaneous production of electricity and heat from a single fuel source, such as natural gas or biomass.
  • Compressed Air Energy Storage: A method of energy storage that compresses air during times of low demand and releases it to generate electricity during times of high demand.
  • Concentrated Solar Power (CSP): A technology that uses mirrors to concentrate sunlight to generate electricity.
  • Current: The flow of electric charge, measured in amperes (A).
  • DC power: Direct current power, which flows in one direction.
  • Decentralized Energy: Energy that is generated and distributed on a small scale, typically at or near the point of use.
  • Demand Response: A program that encourages customers to reduce their electricity consumption during peak demand periods, typically through financial incentives.
  • Demand-side Management (DSM): The management of electricity demand through the use of incentives, pricing, and other measures to encourage customers to reduce or shift their energy consumption.
  • Distributed Energy Resource (DER): A source of electrical energy that is located close to the point of consumption, such as rooftop solar panels or small wind turbines.
  • Distributed Generation: The generation of electricity from small-scale and decentralized sources, such as solar panels or small wind turbines, that are located close to the point of use.
  • District Energy: The centralization of energy production and distribution in a specific area, such as a campus or neighborhood.
  • Electric Capacitance: The ability of a material or system to store electric charge, typically measured in farads (F).
  • Electric Conductance: The reciprocal of resistance, typically measured in siemens (S).
  • Electric Current: The flow of electric charge, typically measured in amperes (A).
  • Electric Energy: The total amount of energy transferred or converted, typically measured in watt-hours (Wh) or kilowatt-hours (kWh).
  • Electric Impedance: The combined opposition to the flow of electric current in a circuit, including both resistance and reactance.
  • Electric Inductance: The ability of a material or system to store energy in a magnetic field, typically measured in henries (H).
  • Electric Load: The power consumed by an electrical
  • Electric Power Distribution: The delivery of electrical energy from substations to the customers through a network of power lines and transformers.
  • Electric Power Factor: The ratio of real power to apparent power in an AC circuit.
  • Electric Power Generation: The process of producing electricity, such as by burning fossil fuels, harnessing nuclear reactions, or capturing renewable energy sources.
  • Electric Power Market: A marketplace where buyers and sellers of electricity can trade power at prices determined by supply and demand.
  • Electric Power Planning: The process of forecasting future energy demand and determining the best ways to meet that demand through generation, transmission, and distribution.
  • Electric Power Regulation: The oversight and regulation of the electric power industry by government agencies.
  • Electric Power System Automation: The use of control systems and automation technology to improve the efficiency and reliability of the electric power industry.
  • Electric Power System Communications: The use of communication technology to improve the monitoring, control, and management of the electric power industry.
  • Electric Power System Cybersecurity: The measures taken to protect the electric power industry from cyber threats, such as hacking and malware.
  • Electric Power System Decarbonization: The process of reducing the carbon footprint of the electric power industry, through the use of renewable energy sources and energy efficiency measures.
  • Electric Power System Economics: The study of the economic factors that influence the production, transmission, and consumption of electricity.
  • Electric Power System Maintenance: The regular maintenance and upkeep of the equipment and infrastructure used in the electric power industry.
  • Electric Power System Modernization: The process of upgrading and updating the equipment and infrastructure used in the electric power industry.
  • Electric Power System Protection: The use of devices and systems to prevent damage to equipment and infrastructure in the electric power industry.
  • Electric Power System Reliability: The ability of an electric power system to deliver power to customers as expected, without interruption or failure.
  • Electric Power System Resilience: The ability of an electric power system to withstand and recover from disturbances, such as natural disasters or cyber-attacks.
  • Electric Power System Safety: The measures taken to ensure the safety of people and equipment in the electric power industry.
  • Electric Power System Security: The ability of an electric power system to withstand and recover from intentional or accidental disturbances.
  • Electric Power System Stability: The ability of an electric power system to maintain steady state operation and recover from disturbances.
  • Electric Power System: A network of power plants, transmission lines, substations, and distribution lines that delivers electricity to customers.
  • Electric Power Transmission: The bulk movement of electrical energy from power plants to substations and distribution centers.
  • Electric Power: The rate at which electrical energy is transferred or converted, typically measured in watts (W) or megawatts (MW).
  • Electric Reactance: The opposition to the flow of electric current in an AC circuit caused by the inductance and capacitance of the circuit, typically measured in ohms (Ω).
  • Electric Resistance: The opposition to the flow of electric current, typically measured in ohms (Ω).
  • Electric Vehicle (EV): A vehicle that is powered by an electric motor, using energy stored in batteries.
  • Electric Vehicle (EV): A vehicle that is powered by electricity, typically through a battery or fuel cell.
  • Electric Vehicle Charging Station: A facility that provides charging equipment for electric vehicles, including level 1, level 2, and level 3 charging.
  • Electric Voltage: The potential difference in electric potential between two points, typically measured in volts (V).
  • Electromagnetic Spectrum: The range of all types of electromagnetic radiation, including radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.
  • Energy Access: The availability and affordability of energy services to meet the basic needs of individuals and communities.
  • Energy Analytics: The use of data and statistical techniques to analyze energy consumption patterns and identify opportunities for energy savings.
  • Energy Audit: A comprehensive analysis of the energy consumption and efficiency of a building or facility, with the goal of identifying opportunities for energy savings.
  • Energy Audit: A detailed examination of energy use in a building or facility, including a review of equipment and systems, and the identification of energy savings opportunities.
  • Energy Auditing: The process of evaluating energy consumption and identifying opportunities for energy efficiency and conservation in a building or facility.
  • Energy Auditing: The process of identifying and measuring the energy consumption of a facility or system, in order to identify opportunities for energy savings.
  • Energy Benchmarking: The process of comparing the energy performance of a building or facility to similar buildings or industry standards.
  • Energy Blockchain: A decentralized system for managing energy transactions and trading, using blockchain technology.
  • Energy Conservation Building Code (ECBC): A set of guidelines for energy efficient design and construction of buildings in India, developed by the Bureau of Energy Efficiency (BEE) under the Ministry of Power.
  • Energy Conservation Code (ECC): A set of building codes that promote energy efficiency in new construction and major renovations.
  • Energy Conservation Measure (ECM): A strategy or technology that is used to reduce energy consumption, such as installing energy-efficient lighting or upgrading HVAC systems.
  • Energy Conservation Measures (ECMs): Specific actions or technologies implemented to improve energy efficiency and reduce energy consumption.
  • Energy Conservation: The practice of reducing energy consumption through changes in behavior, such as turning off lights when leaving a room or using energy-efficient appliances.
  • Energy Conservation: the reduction of energy consumption by using energy more efficiently
  • Energy Conservation: The reduction of energy consumption by using energy more efficiently or by reducing the amount of energy used for a given task.
  • Energy Dashboard: A software application that displays energy consumption data in real-time, allowing for easy monitoring and analysis of energy usage.
  • Energy Density: The amount of energy stored per unit volume, typically measured in watt-hours per liter (Wh/L) or joules per cubic meter (J/m³).
  • Energy Diversification: The use of multiple energy sources to reduce dependence on a single source and reduce risk.
  • Energy Efficiency and Renewable Energy (EERE): A program in the United States, run by the Department of Energy, that supports research and development of energy efficiency and renewable energy technologies.
  • Energy Efficiency Financing: The use of financial instruments such as loans, grants, and bonds to fund energy efficiency projects.
  • Energy Efficiency Rating: A measure of the energy efficiency of a building, appliance, or product, such as the Energy Star rating in the United States.
  • Energy Efficiency Ratio (EER): A measure of the efficiency of air conditioning equipment, typically used for cooling systems.
  • Energy Efficiency Retrofit: The process of upgrading or retrofitting a building or facility to improve energy efficiency, such as by installing energy-efficient lighting or HVAC systems.
  • Energy Efficiency Services Limited (EESL): A joint venture company of state-owned companies under the Ministry of Power, Government of India, that provides energy efficiency solutions across various sectors.
  • Energy Efficiency Standards: Regulations or guidelines that set minimum energy performance standards for buildings, appliances, and products.
  • Energy Efficiency: The use of less energy to perform the same task, usually achieved through the use of more efficient technologies or changes in behavior.
  • Energy Efficiency: The use of technology, design, and practices to reduce the amount of energy required to perform a specific task or function.
  • Energy Harvesting: The process of capturing and converting energy from natural sources such as sunlight, wind, and vibrations into usable electrical energy.
  • Energy Harvesting: The process of collecting energy from the environment and converting it into usable forms of energy, such as electricity.
  • Energy independence: The ability of a country or region to meet its own energy needs without relying on imported energy.
  • Energy Independence: The ability of a country or region to produce enough energy to meet its own needs without relying on imports.
  • Energy Information System (EIS): A system that collects, stores, and analyzes energy data for monitoring and reporting purposes.
  • Energy Intelligence: The use of data and analytics to improve the understanding of energy consumption patterns and identify opportunities for energy savings.
  • Energy Internet: A concept of creating a global energy network that interconnects energy sources, storage systems, and loads, enabling the efficient and sustainable exchange of energy.
  • Energy Labelling: A system of providing information to consumers about the energy efficiency of products, typically through the use of labels or ratings.
  • Energy Management and Control System (EMCS): A computer-based system that is used to monitor and control the energy consumption of a building or facility.
  • Energy Management and Control System (EMCS): A system that monitors and controls the energy consumption of a building, typically through the use of sensors and actuators.
  • Energy Management as a Service (EMaaS): A service offered by a third-party company that provides energy management solutions to customers, typically through the use of advanced technology and data analytics.
  • Energy Management Certification: A certification program, such as the Certified Energy Manager (CEM) or the Building Energy Management Professional (BEMP) that recognizes individuals who have demonstrated knowledge and skills in energy management.
  • Energy Management Control System (EMCS): A computer-based system that is used to monitor and control the energy consumption of a building or facility.
  • Energy Management Information System (EMIS): A computer-based system that is used to collect, store, and analyze energy consumption data.
  • Energy Management Plan (EMP): A comprehensive plan that outlines the strategies, actions, and goals to be taken to improve energy efficiency, reduce energy consumption and costs, and achieve energy-related targets.
  • Energy Management Plan (EMP): A plan that outlines the strategies and actions that will be taken to improve energy efficiency and reduce energy costs.
  • Energy Management Plan: A plan that outlines the strategies and actions to be taken to improve energy efficiency and reduce energy consumption.
  • Energy Management Services: A service offered by a third-party company that provides energy management solutions to customers, typically through the use of advanced technology and data analytics.
  • Energy Management Software (EMS): A software application that helps to monitor, analyze, and control energy consumption, costs, and emissions in real-time.
  • Energy Management Software: A computer program that is used to monitor and control energy consumption in a facility or system.
  • Energy Management Software: A software application that helps to monitor and manage energy consumption and costs.
  • Energy Management Standards: Standards and guidelines for energy management systems, such as ISO 50001 for energy management systems, developed by international organizations like International Organization for Standardization (ISO) and International Electrotechnical Commission (IEC)
  • Energy Management System (EMS) Audit: A review and evaluation of an existing Energy Management System to ensure compliance with standards, identify potential areas for improvement, and assess the system’s effectiveness.
  • Energy Management System (EMS) Automation: The use of technology to automate various tasks and functions within an Energy Management System, such as data collection and analysis, alerts and notifications, and energy usage scheduling.
  • Energy Management System (EMS) Carbon Emissions Management: The process of tracking, managing, and reducing carbon emissions from energy consumption.
  • Energy Management System (EMS) Carbon Footprint: The total amount of greenhouse gases emitted into the atmosphere as a result of energy consumption by an organization or facility.
  • Energy Management System (EMS) Certification: A certification program that verifies that an organization’s Energy Management System meets the standard requirements.
  • Energy Management System (EMS) Cloud-based: A type of Energy Management System that is hosted on a remote server and accessible via the internet, allowing for easy access and remote management.
  • Energy Management System (EMS) Compliance: The ability of an Energy Management System to meet legal and regulatory requirements for energy management, such as those set by the ISO 50001 standard.
  • Energy Management System (EMS) Customization: The ability to adjust and configure an Energy Management System to meet the specific needs of an organization or facility.
  • Energy Management System (EMS) Data Analysis: The process of analyzing data collected by an Energy Management System to identify patterns, trends, and opportunities for energy savings.
  • Energy Management System (EMS) Data Export: The ability to export data collected by an Energy Management System to external software or platforms for further analysis.
  • Energy Management System (EMS) Data Visualization: The use of charts, graphs, and other visual aids to display data collected by an Energy Management System in a clear and easy-to-understand format.
  • Energy Management System (EMS) Energy Accounting: The process of tracking and accounting for energy usage and costs within an organization or facility.
  • Energy Management System (EMS) Energy Auditing: The process of evaluating energy consumption and identifying opportunities for energy efficiency and conservation in a building or facility.
  • Energy Management System (EMS) Energy Budgeting: The process of creating and managing an energy budget for an organization or facility.
  • Energy Management System (EMS) Energy Conservation: The process of reducing energy consumption through the use of energy-efficient technologies, equipment, and practices.
  • Energy Management System (EMS) Energy Efficiency: The ratio of useful energy output to energy input, or the ability of a system to perform its intended function with a minimal amount of energy.
  • Energy Management System (EMS) Energy Forecasting: The use of historical data and energy usage patterns to predict future energy consumption and costs.
  • Energy Management System (EMS) Energy Management Metrics: A set of measurements and indicators used to evaluate the performance and efficiency of an organization or facility’s energy management system.
  • Energy Management System (EMS) Energy Management Plan (EMP): A comprehensive plan that outlines the strategies, actions, and goals to be taken to improve energy efficiency, reduce energy consumption and costs, and achieve energy-related targets.
  • Energy Management System (EMS) Energy Management Policy: A statement outlining an organization or facility’s commitment to energy management and energy efficiency.
  • Energy Management System (EMS) Energy Management Program (EMP): A set of actions, procedures, and policies put in place to manage and improve the energy performance of an organization or facility.
  • Energy Management System (EMS) Energy Management System (EMS) Energy Conservation Plan (ECP): A plan outlining the strategies, actions, and goals to be taken to improve energy efficiency and reduce energy consumption in a building or facility.
  • Energy Management System (EMS) Energy Management System (EMS) Energy Efficiency Ratio (EER): A measure of the cooling efficiency of air conditioners and heat pumps.
  • Energy Management System (EMS) Energy Management System (EMS) Energy Factor (EF): A measure of the energy efficiency of appliances such as water heaters, clothes washers and dryers.
  • Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS) Energy Management System (EMS)
  • Energy Management System (EMS) Energy Management System (EMS) Energy Star: A certification program that recognizes and promotes energy-efficient products and buildings.
  • Energy Management System (EMS) Energy Management System (EMS) Integration: The process of connecting different energy management systems and devices to work together to improve energy efficiency and reduce consumption.
  • Energy Management System (EMS) Energy Management System (EMS) Return on Investment (ROI): The ratio of the benefits gained from an Energy Management System to the costs incurred in implementing it.
  • Energy Management System (EMS) Energy Management System (EMS) Sustainability: The ability of an Energy Management System to support long-term environmental and social sustainability goals.
  • Energy Management System (EMS) Energy Management Systems (EMSs) Standards: Standards and guidelines for energy management systems, such as ISO 50001 for energy management systems, developed by international organizations like International Organization for Standardization (ISO) and International Electrotechnical Commission (IEC)
  • Energy Management System (EMS) Energy Optimization: The process of identifying and implementing measures to improve energy efficiency and reduce energy consumption.
  • Energy Management System (EMS) Energy Performance Contracting (EPC): A type of contract where an Energy Service Company (ESCO) provides energy efficiency improvements in a facility, and the savings from these improvements are used to pay for the work over a specified period of time.
  • Energy Management System (EMS) Energy Performance Indicator (EnPI): A metric used to measure and evaluate the energy performance of a building or facility.
  • Energy Management System (EMS) Energy Procurement: The process of acquiring energy, typically electricity or natural gas, for a building or facility.
  • Energy Management System (EMS) Energy Reduction: The process of reducing the overall energy consumption of an organization or facility.
  • Energy Management System (EMS) Energy Savings Opportunities (ESOs): Areas or processes within an organization or facility where energy savings can be achieved through the implementation of energy efficiency measures and conservation practices.
  • Energy Management System (EMS) Energy Savings Verification: The process of measuring and verifying the energy savings achieved through the implementation of energy efficiency measures and conservation practices.
  • Energy Management System (EMS) Energy Savings: The reduction in energy consumption achieved through energy efficiency measures and conservation practices.
  • Energy Management System (EMS) Implementation: The process of installing and configuring an Energy Management System in an organization or facility.
  • Energy Management System (EMS) Integration: The process of connecting different energy management systems and devices to work together to improve energy efficiency and reduce consumption.
  • Energy Management System (EMS) Maintenance: The ongoing care and upkeep of an Energy Management System to ensure it continues to function properly and provide accurate data.
  • Energy Management System (EMS) Notification and Alerts: The ability to set up notifications and alerts within an Energy Management System to notify users of energy usage patterns, energy cost, and other energy-related information.
  • Energy Management System (EMS) Performance Monitoring: The process of regularly monitoring the performance of an Energy Management System to ensure it is functioning properly and providing accurate data.
  • Energy Management System (EMS) Remote Access: The ability to access and control an Energy Management System remotely through a web-based interface or mobile device.
  • Energy Management System (EMS) Renewable Energy Integration: The process of integrating renewable energy sources, such as solar or wind, into an Energy Management System to increase the use of sustainable energy.
  • Energy Management System (EMS) Reporting: The process of generating and sharing reports on energy consumption, costs, and emissions, often in a visual format, such as graphs and charts.
  • Energy Management System (EMS) Scalability: The ability of an Energy Management System to adapt and accommodate the changing energy needs of an organization or facility.
  • Energy Management System (EMS) Security: The measures taken to protect an Energy Management System from unauthorized access, tampering, or cyber-attacks.
  • Energy Management System (EMS) Software: A software application used to monitor, analyze, and control energy consumption, costs, and emissions in real-time.
  • Energy Management System (EMS) Training: Training provided to employees on the proper use and maintenance of an Energy Management System.
  • Energy Management System (EMS) Upgrade: The process of updating an existing Energy Management System with new software, hardware, or features to improve its performance and capabilities.
  • Energy Management System (EMS): A system that monitors and controls the energy consumption of a facility or system, in order to optimize energy efficiency and reduce costs.
  • Energy Management System (EMS): A system that monitors and controls the generation, distribution, and consumption of energy in a building or facility.
  • Energy Management System (EMS): A system that monitors, controls and optimizes the energy consumption of a facility or building.
  • Energy Management System (EMS): A system that monitors, controls, and optimizes the energy consumption of a facility or building, including lighting, HVAC, and other systems.
  • Energy Management System (ISO 50001): An international standard for energy management systems, developed by the International Organization for Standardization (ISO), that provides a framework for improving energy efficiency and reducing energy consumption.
  • Energy Management System certification: A certification program that verifies the energy management system of an organization or facility meets the standard requirements.
  • Energy Management Systems Integration: A process that connects different energy management systems and devices to work together to improve energy efficiency and reduce consumption.
  • Energy Management Systems Integration: The process of connecting and coordinating various energy management systems, such as building automation systems and energy management software, to improve overall energy efficiency.
  • Energy Management: The process of monitoring, controlling, and optimizing the energy consumption of a facility or system.
  • Energy Mix: The combination of different energy sources used to meet energy demand.
  • Energy Modeling: The use of computer simulations to predict the energy consumption and performance of a building or facility.
  • Energy Optimization: The process of identifying and implementing changes to improve energy efficiency and reduce energy costs.
  • Energy Performance Contracting (EPC): A type of contract in which an energy services company (ESCO) guarantees energy savings through the implementation of energy efficiency measures, and is paid based on the achieved savings.
  • Energy Performance Contracting (EPC): A type of contract where an ESCO provides energy efficiency improvements in a facility, and the savings from these improvements are used to pay for the work over a specified period of time.
  • Energy Poverty: The lack of access to affordable and reliable energy services.
  • Energy Procurement Plan (EPP): A plan that outlines the strategies, actions, and goals to be taken to acquire energy, typically electricity or natural gas, for a building or facility in a cost-effective and sustainable manner.
  • Energy Procurement: The process of acquiring energy, such as electricity or natural gas, through contracts or agreements with suppliers.
  • Energy Procurement: The process of acquiring energy, typically electricity or natural gas, for a building or facility.
  • Energy Rating Label: A label that provides information on the energy efficiency of a product, such as the EnergyGuide label in the United States.
  • Energy Rating: A numerical score assigned to a building or facility that represents its energy efficiency and performance.
  • Energy Recovery Ventilation (ERV): A type of ventilation system that captures energy from exhausted air to preheat or precool incoming air.
  • Energy Resilience: The ability of an energy system to withstand and quickly recover from disruptions, such as natural disasters or cyberattacks.
  • Energy Retrofit: The process of upgrading or retrofitting a building or facility to improve energy efficiency.
  • Energy Retrofitting: The process of upgrading the energy efficiency of an existing building or facility through the installation of new technologies or equipment.
  • Energy Return on Investment (EROI): A measure of the energy efficiency of a particular energy source, calculated as the ratio of the energy produced to the energy consumed.
  • Energy Saving: the reduction of energy consumption by using less energy to accomplish the same task
  • Energy Savings Performance Contract (ESPC): A contract where an Energy Service Company (ESCO) provides energy efficiency improvements in a facility, and the savings from these improvements are used to pay for the work over a specified period of time.
  • Energy Savings Performance Contract (ESPC): A type of contract in which an energy services company (ESCO) guarantees energy savings through the implementation of energy efficiency measures, and is paid based on the achieved savings.
  • Energy Security: The ability of a society to ensure the availability and accessibility of energy at all times and to protect itself against disruptions in the energy supply.
  • Energy Security: The ability to ensure a reliable and stable supply of energy to meet the needs of a country or region.
  • Energy Service Agreement (ESA): A contract between a facility owner and an energy service provider that outlines the services to be provided, such as energy efficiency retrofits, and the terms of payment.
  • Energy Service Agreement (ESA): A type of contract in which an energy services company (ESCO) guarantees energy savings through the implementation of energy efficiency measures, and is paid based on the achieved savings.
  • Energy Service Company (ESCO): A company that provides energy-related services such as energy audits, retrofits, and performance contracting.
  • Energy Service Company (ESCO): A company that provides energy-related services such as energy efficiency audits, retrofits, and performance contracting.
  • Energy Service Company (ESCO): A company that specializes in providing energy-related services, such as energy audits, retrofits, and energy management systems.
  • Energy Services Agreement (ESA): A contract between a facility owner and an energy service provider that outlines the services to be provided, such as energy efficiency retrofits, and the terms of payment.
  • Energy Services Company (ESCO): A company that specializes in providing energy-related services, such as energy audits, retrofits, and energy management systems.
  • Energy Simulation: A computer-based tool that allows to simulate the energy performance of a building, equipment or process to identify energy savings opportunities and evaluate the performance of different design options.
  • Energy Star Portfolio Manager: A web-based tool in the United States, run by the Environmental Protection Agency, that allows users to track and benchmark energy consumption in buildings.
  • Energy Star: A program in the United States, run by the Environmental Protection Agency, that certifies buildings and products that meet energy efficiency standards.
  • Energy Star: A program run by the US Environmental Protection Agency that certifies buildings and products that meet certain energy efficiency standards.
  • Energy Storage System (ESS): A system that stores energy for later use, such as batteries, flywheels, or pumped hydroelectric storage.
  • Energy Storage System (ESS): A system that stores energy for later use, such as in batteries or flywheels.
  • Energy Storage: The process of storing energy for later use, such as in batteries or flywheels.
  • Energy Storage: The storage of energy for later use, such as in batteries or flywheels.
  • Energy Transition: The process of moving from an energy system based on fossil fuels to one based on renewable energy sources and energy efficiency.
  • Energy Transition: The process of moving from traditional energy sources to renewable energy sources.
  • Energy: The ability to do work, typically measured in joules (J) or watt-hours (Wh).
  • Energy-Efficient Appliances: Appliances that consume less energy than traditional appliances.
  • Energy-Efficient Buildings Hub (EEB Hub): A program in the United States, run by the Department of Energy, that supports research and development of energy-efficient building technologies.
  • Energy-Efficient Communities Program (EECP): A program in the United States, run by the Department of Energy, that provides funding and technical assistance to communities for energy efficiency projects.
  • Energy-Efficient Lighting: The use of lighting technologies that consume less energy than traditional incandescent bulbs.
  • Energy-Efficient Mortgages (EEM): A type of mortgage that allows homeowners to finance energy-efficient improvements to their homes.
  • Feed-in Tariff (FIT): A policy mechanism that guarantees a fixed price for renewable energy generated by small-scale producers, such as households and small businesses.
  • Feed-in Tariff (FIT): A policy that guarantees a fixed price for electricity generated from renewable energy sources.
  • Forced Vibration: The vibration of a system or structure caused by an external force.
  • Frequency: The number of oscillations or cycles of a wave in a given period of time, measured in hertz (Hz).
  • Fuel Cell Electric Vehicle (FCEV): A vehicle that generates electricity through a chemical reaction between hydrogen and oxygen, typically in a fuel cell.
  • Fuel Cell: A device that converts chemical energy into electrical energy through a process known as electrolysis.
  • Gamma rays: Electromagnetic waves that have the shortest wavelength and highest frequency in the electromagnetic spectrum and are used for medical imaging and cancer treatment.
  • Generation Capacity: The maximum power that can be generated by a power plant or system.
  • Generator: A device that converts mechanical energy into electrical energy.
  • Geothermal Energy: Energy generated from the heat of the earth, typically through the use of geothermal heat pumps or geothermal power plants.
  • Geothermal: The use of heat from the Earth’s crust to generate electricity.
  • Green Building: A building that is designed, constructed, and operated to minimize its environmental impact and promote sustainability.
  • Green Energy: Energy that is generated from renewable sources and has a low environmental impact.
  • Green Lease: A lease agreement that includes provisions for energy efficiency and sustainability, such as energy efficient equipment and building systems, recycling and composting programs, and green transportation options.
  • Green Power: Electricity that is generated from renewable energy sources.
  • Greenhouse Gas: A gas that contributes to the greenhouse effect, such as carbon dioxide, methane, nitrous oxide, and others.
  • Grid-Connected: A system that is connected to the electrical grid and can draw power from it as well as feed power back to it.
  • Grid-Tie: A system that is connected to the electrical grid and can draw power from it as well as feed power back to it.
  • Grid-tied System: A system that is connected to the electrical grid and can feed excess power back into the grid.
  • Ground: A reference point in an electrical circuit, often connected to the Earth.
  • Harmonic Frequencies: Frequencies that are integral multiples of the fundamental frequency.
  • Harmonics: Distortion of an electrical waveform caused by non-linear loads, such as electronic devices.
  • Harmonics: Distortions in the waveform of an AC voltage or current caused by non-linear loads, such as electronic devices.
  • Hertz (Hz): The unit of frequency, defined as the number of cycles per second.
  • Home Automation: The use of technology to automate various tasks and functions in a home, such as lighting, heating, and security.
  • Home Energy Management System (HEMS): A system that monitors and controls the energy consumption of a home, typically through the use of smart devices and appliances.
  • Hybrid Electric Vehicle (HEV): A vehicle that has a combination of an electric motor and an internal combustion engine, which work together to improve fuel efficiency.
  • Hydroelectric Energy: Energy generated from the movement of water, typically through the use of dams or water turbines.
  • Hydroelectric: The use of falling water to generate electricity.
  • Impedance: The measure of the opposition to current flow in an AC circuit, including both resistance and reactance.
  • Infrared: Electromagnetic waves that have a shorter wavelength and higher frequency than microwaves and are used for heating and sensing temperature.
  • Infrasound: Sound waves with frequencies lower than the lower limit of human hearing (20 Hz).
  • Internet of Things (IoT): A network of internet-connected devices that can collect and exchange data.
  • Inverter: A device that converts DC power into AC power.
  • Kilowatt-hours (kWh): A unit of energy, equal to one thousand watt-hours.
  • Level 1 Charging: Charging an electric vehicle using a standard 120-volt household outlet, typically providing a charge rate of 2 to 5 miles of range per hour of charging.
  • Level 2 Charging: Charging an electric vehicle using a 240-volt charger, typically providing a charge rate of 10 to 25 miles of range per hour of charging.
  • Level 3 Charging: Charging an electric vehicle using a high-power DC fast charger, typically providing a charge rate of 50 to 100 miles of range per hour of charging.
  • Levelized Cost of Energy (LCOE): A measure of the cost of electricity generation from a particular energy source, taking into account the costs of construction, operation, and decommissioning.
  • Load Factor: The ratio of the average load to the peak load, used to measure the utilization of electrical generation and transmission capacity.
  • Load Factor: The ratio of the average power consumption to the peak power consumption of a load.
  • Load: An electrical device or system that consumes power.
  • Microgeneration: The small-scale production of electricity, typically by individuals or small businesses, through technologies such as solar panels or small wind turbines.
  • Microgrid: A small-scale electrical grid that can operate independently or in conjunction with the larger grid.
  • Microgrid: A small-scale power grid that can operate independently or connected to the larger power grid, typically used for remote or off-grid locations.
  • Microgrid: A small-scale power grid that is connected to the larger power grid, but can also operate independently.
  • Microturbine: A small-scale turbine that generates electricity through the combustion of natural gas or other fuels.
  • Microwaves: Electromagnetic waves that have a shorter wavelength and higher frequency than radio waves.
  • Natural Frequency: The frequency at which a system or structure will vibrate when excited.
  • Net Metering: A policy that allows customers to generate electricity from renewable energy sources and sell any excess back to the grid.
  • Net metering: A system that allows homeowners with solar panels or other renewable energy sources to send excess power back to the grid and receive credits on their utility bills.
  • Net Zero Energy: A building or facility that produces as much energy as it consumes on an annual basis.
  • Net-metering: A billing arrangement where excess electricity generated by a renewable energy system is fed back to the grid, and the customer is credited for the excess generation.
  • Net-zero Energy Building: A building that generates as much energy as it consumes, typically through the use of renewable energy sources such as solar or wind.
  • Non-renewable Energy: Energy generated from sources that are finite and will eventually be depleted, such as fossil fuels.
  • Non-Renewable Energy: Energy sources that are finite, such as fossil fuels (coal, oil, natural gas) and nuclear energy.
  • Off-grid system: A system that is not connected to the electrical grid and relies on batteries or generators to store and supply power.
  • Off-Grid: A system that is not connected to the electrical grid and relies on its own power generation.
  • Overcurrent: A current flow in an electrical circuit that exceeds the rated current.
  • Passive House: A building that is designed to minimize energy consumption through the use of passive solar design, high insulation, and airtight construction.
  • Passive House: A building that requires very little energy for heating and cooling, achieved through the use of advanced insulation and airtight construction.
  • Peak Load: The highest level of power consumption in a given period of time.
  • Peak Load: The maximum power demand of an electrical system during a specified period of time.
  • Photovoltaic (PV) Cells: Devices that convert sunlight into electricity through the photovoltaic effect.
  • Plug-in Hybrid Electric Vehicle (PHEV): A vehicle that can be charged from an external power source and has a combination of an electric motor and an internal combustion engine.
  • Power Density: The rate of energy production per unit area, typically measured in watts per square meter (W/m²).
  • Power Factor Correction: The technique of adjusting the phase angle between current and voltage to improve the power factor of an AC circuit.
  • Power factor: The ratio of real power to apparent power in an AC circuit.
  • Power Factor: The ratio of the real power used in an electrical system to the apparent power, which is the vector sum of the real and reactive power.
  • Power Flow: The movement of electric power through a transmission or distribution system.
  • Power Grid: The interconnected system of power generation, transmission, and distribution that supplies electricity to an area or region.
  • Power Loss: The amount of power that is lost as it is transmitted through a system, due to resistance, reactance, and other factors.
  • Power Loss: The amount of power that is not delivered to the intended load or consumer, due to inefficiencies or resistive losses in the electrical system.
  • Power Outage: An interruption in the electric power supply.
  • Power Purchase Agreement (PPA): An agreement between a power generator and a power purchaser, where the generator agrees to sell a certain amount of electricity at a fixed price over a specified period of time.
  • Power Quality Analyzer: A device that is used to measure and analyze the voltage, current, and frequency characteristics of an electrical power supply.
  • Power Quality Monitoring: The process of measuring and analyzing the voltage, current, and frequency characteristics of an electrical power supply.
  • Power Quality: Describes the voltage, current, and frequency characteristics of an electrical power supply.
  • Power Quality: The measure of the electrical characteristics of a power system, including voltage, current, and frequency.
  • Power Terminology Definitions
  • Power: The rate at which energy is transferred or converted, typically measured in watts (W) or megawatts (MW).
  • Power: The rate at which energy is transferred or work is done, typically measured in watts (W) or horsepower (hp).
  • Power-to-X: A technology that converts surplus renewable energy into a storable form, such as hydrogen or synthetic fuels.
  • Pumped Hydroelectric Storage: A method of energy storage that pumps water to a higher elevation when there is excess energy, and releases the water to generate electricity when there is a demand.
  • Radio Waves: Electromagnetic waves that have the longest wavelength and lowest frequency in the electromagnetic spectrum.
  • Range Extender: A device that increases the range of an electric vehicle by generating electricity to supplement the power from the battery.
  • Reactance: The measure of the opposition to current flow in an AC circuit due to the presence of inductors and capacitors, measured in ohms (Ω).
  • Renewable Energy Certificate (REC): A certificate that represents the environmental benefits of generating electricity from renewable energy sources.
  • Renewable Energy Certificates (RECs): A certificate that represents the environmental benefits of generating electricity from renewable energy sources.
  • Renewable Energy Certificates (RECs): Certificates that represent the environmental attributes of renewable energy, such as the reduction of greenhouse gas emissions.
  • Renewable Energy Credits (RECs): A certificate that represents the environmental benefits of generating electricity from renewable energy sources.
  • Renewable Energy Portfolio Standard (RPS): A policy that requires a certain percentage of electricity to be generated from renewable energy sources.
  • Renewable Energy: Energy generated from natural, replenishable sources, such as sunlight, wind, water, and geothermal heat.
  • Renewable Energy: Energy sources that are replenished naturally, such as solar, wind, hydro, geothermal, and biomass.
  • Renewable Energy: Energy that is generated from natural resources that are replenished naturally, such as solar, wind, geothermal, hydro, and biomass.
  • Renewable Portfolio Standard (RPS): A policy that requires a certain percentage of electricity to be generated from renewable energy sources.
  • Resistance: The measure of how difficult it is for current to flow through a material, measured in ohms (Ω).
  • Resonance: The condition where the natural frequency of a system or structure coincides with the frequency of an applied force.
  • Short circuit: An accidental path of low resistance between two points in an electrical circuit, causing an excessive current flow.
  • Smart Building: A building that uses advanced technologies, such as sensors, communication networks, and control systems, to improve energy efficiency, comfort, and safety.
  • Smart Grid: A power grid that is equipped with advanced technology for monitoring and controlling the flow of electricity, including the integration of renewable energy sources and distributed generation.
  • Smart Grid: An advanced power grid that uses digital technology to monitor and control the flow of electricity, allowing for the integration of renewable energy sources and demand-side management.
  • Smart Grid: An electrical grid that uses advanced technologies such as sensors, communication networks, and advanced control systems to improve the efficiency, reliability, and flexibility of the power supply.
  • Smart Home: A home that is equipped with technology for monitoring and controlling the various systems, such as lighting, heating, and appliances, from a central hub or through a mobile device.
  • Smart Meter: An electronic device that records the consumption of electricity, gas, or water at regular intervals and sends the data to the utility company.
  • Smart Meter: An electronic meter that records electricity consumption in intervals of an hour or less and communicates the information back to the utility company.
  • Solar Energy: Energy generated from the sun, typically through the use of photovoltaic cells or concentrated solar power systems.
  • Solar: The use of energy from the sun to generate electricity.
  • Sound Frequency: The number of oscillations or cycles of a sound wave in a given period of time, measured in hertz (Hz).
  • Spinning Reserve: The additional generating capacity that is kept running and synchronized to the power grid in case of unexpected demand.
  • Subharmonics: Frequencies that are sub-multiples of the fundamental frequency.
  • Surge protection: A device that protects electrical equipment from voltage spikes caused by lightning strikes or power outages.
  • Thermal Energy Storage: A method of energy storage that stores heat during times of low demand and releases it to generate electricity during times of high demand.
  • Tidal Energy: Energy generated from the movement of ocean tides, typically through the use of tidal turbines.
  • Transactive Energy: A system that uses market mechanisms and digital technology to manage the balance between energy supply and demand in real-time.
  • Transactive Energy: An energy management system that uses market mechanisms, such as pricing and incentives, to balance the supply and demand of electricity.
  • Transformer: A device that changes the voltage level of an AC power source.
  • Transmission Capacity: The maximum power that can be transmitted by a transmission line or system.
  • Ultrasound: Sound waves with frequencies higher than the upper limit of human hearing (20,000 Hz).
  • Ultraviolet: Electromagnetic waves that have a shorter wavelength and higher frequency than visible light and are used for tanning and disinfection.
  • Virtual Power Plant (VPP): A system that aggregates the output of distributed energy resources, such as solar panels and electric vehicles, and manages it as a single entity.
  • Visible Light: Electromagnetic waves that have a shorter wavelength and higher frequency than infrared and are visible to the human eye.
  • Voltage: The electric potential difference between two points, measured in volts (V).
  • Watt-hours (Wh): A unit of energy, equal to one watt of power used for one hour.
  • Wave Energy: Energy generated from the movement of ocean waves, typically through the use of wave energy converters.
  • Wavelength: The distance between two consecutive points of a wave that are in phase.
  • Wind Energy: Energy generated from the wind, typically through the use of wind turbines.
  • Wind Turbine: A machine that converts the kinetic energy of the wind into electricity.
  • Wind: The use of energy from the wind to generate electricity.
  • X-rays: Electromagnetic waves that have a shorter wavelength and higher frequency than ultraviolet and are used for medical imaging and cancer treatment.
  • Zero-Energy Building (ZEB): A building that produces as much energy as it consumes on an annual basis, typically through the use of renewable energy sources.
Common Circuit Terminology
CZ Electric
Watt