Demand Response Glossary

A term used to describe a customers usage prior to taking action to reduce its usage as requested. The baseline is determined differently in different demand response programs. In New York, the baseline is defined as the Average Coincident Load (“ACL”) and is calculated by taking the top 40 peak hours during the 4 middle months of a capability period and averaging the company’s 20 highest usage hours. The 4 middle months for the summer capability period is June, July, August and Sept. The 4 middle months for the winter capability period is Dec, Jan, Feb and March. In other markets, a Customer Baseline (CBL) approach is used, which generally involves the highest 3 or 5 days from the prior 10 weekdays, with certain exclusions.
Period of complete electric power loss to a widespread area
Period of electric power loss to pockets of customers, caused by a state of “poor power quality”, in which the utility company may reduce electric line voltage in efforts to deliver more electricity to meet increased demand; or the utility may even curtail electric power supply to blocks of customers to meet demand.  A reduction in voltage can compromise facility equipment that requires stable, non-fluctuating voltage supply.
Not-for-profit, public-benefit corporation responsible for operating the majority of California’s high-voltage wholesale power grid, balancing the demand for electricity with an equal supply of megawatts, and impartially linking the power plants and utilities that serve more than 30 million consumers.
California’s primary energy policy and planning agency, responsible for forecasting energy needs, keeping records, licensing power plants, promoting efficiency, developing energy technologies and planning for / responding to emergencies
Six-month period for buying and selling electric capacity in NYISO’s territory; Summer Capability Period is May through September, Winter Capability Period is October through April.
Payment to customer for advance agreement to reduce a certain amount of electric demand upon activation by the market administrator or utility, through NRGCS.
The impact of an entity’s activities on the environment, measured in terms of carbon dioxide emissions produced: e.g. burning fossil fuels for electric power, heat or transportation
Steps taken to compensate for carbon dioxide emissions produced: e.g. funding alternative energy or carbon reduction projects
A reduction in the scheduled capacity or energy delivery of an Interchange Transaction.
Amount of electric demand that can be reduced
The act of responding to a set of electric market and/or reliability triggers by reducing demand for electricity; Relieves stress on the electric grid, helping utilities and grid operators provide electric supply to users.
Period of time for which participants are called on to reduce their electric demand
The management of demand-side (as opposed to supply-side) measures of end-users; the process of shifting or reducing end-user electricity use in order to meet demand for supply and avoid costly investment in new generation.
Demand response programs in which response events are triggered by emergencies related to power supply or transmission/distribution. Participation is generally voluntary and payments are limited to energy payments only, which are typically based on the market price reached during the emergency event periods, subject to caps.
Amount of electricity a system is using at a given point of time; measured in kW
The network of systems that transmits and delivers power from producers to end-users
Using less energy by means of a more efficient technology or process to achieve the same level of energy service.
Joint program of the US Environmental Protection Agency (EPA) and the US Department of Energy which sets a level of energy efficiency standards for buildings, homes and electronic products.
The New York Installed Capacity (ICAP) market is based on the obligation placed on load serving entities (LSEs) to procure ICAP to meet minimum requirements. The requirements are determined by forecasting each LSE’s contribution to its transmission district peak load, plus an additional amount to cover the Installed Reserve Margin. The amount of capacity that each supplying resource is qualified to provide to the New York Control Area (NYCA) is determined by an Unforced Capacity (UCAP) methodology. NYISO ICAP auctions are designed to accommodate LSEs and suppliers’ efforts to enter intoUCAP transactions. They are open to all registered NYISO customers.
Helps protect the health of New England’s economy and the well-being of its people by ensuring the constant availability of electricity; responsible for the continuous reliability of New England’s power grid.
Full service energy provider and resource, serving customers in northwestern Missouri and eastern Kansas counties
Measurement of power; 1 kW = 1,000 watts or approximately 1 house; 1,000 kW = 1 megawatt (MW)
Measurement of power consumption over time; e.g. use of 1 kW for 1 hour = 1 kWh; 1 kW for 5 hours = 5 kWh
Provides building owners and operators with the tools to have an immediate and measurable impact on their buildings’ energy and environmental performance. The LEED Green Building Rating System is a third-party verification program and nationally accepted benchmark for design, construction and operation of high performance green buildings.
Amount of power delivered or required by a generator, motor or power system.
Measurement of power; 1 MW = 1,000 kW; 1 kW = 1,000 watts or approximately 1 house.
A public benefit corporation focused on the environmental effects of energy consumption, development of renewable resources and advancement of innovative technologies in New York State.
Organization of US electric grid operators that ensures the reliability of the bulk power system in North America.
Balances the short-term and long-term needs of electricity users while developing a reliable and sustainable electricity system for their benefit. In doing so, they plan for the long term and procure and coordinate conservation and electricity supply from diverse resources.
Based in San Francisco and incorporated in 1905, it is one of the largest combination natural gas and electric utilities in the United States. There are approximately 20,000 employees who carry out PG&E’s primary business – the transmission and delivery of energy. The company provides natural gas and electric service to approximately 15 million people throughout a 70,000-square-mile service area in northern and central California. PG&E and other California utilities are regulated by the California Public Utilities Commission. NRGCS administers multiple programs in PG&E’s territories, referenced as Cut Back California or PowerPay! California. NRGCS has a direct contract with PG&E through 2012.
Highest level of electric demand requested on a system or by an end-user.
A diverse association of leading energy professionals dedicated to developing and promoting consumer participation in electricity markets around the world, using load management.
Ensures the electric power supply reliability in 13 states and the District of Columbia, operates an efficient, effective wholesale electricity market and manages a long-term regional electric transmission planning process. PJM Interconnection coordinates the movement of electricity through all or parts of Delaware, Illinois, Indiana, Kentucky, Maryland, New Jersey, North Carolina, Ohio, Pennsylvania, Tennessee, Virginia, West Virginia and the District of Columbia. This service area has a population of about 51 million and a peak demand of 144,644 megawatts.
Low or unstable voltage levels; can harm an electric motor or system.
NRGCS’ risk-free, zero cost, customer-friendly demand response programs.
Period during which the electric grid is unstable and demand response program participants are called on to reduce their electricity use.
A demand response service provider, authorized by the New York Independent System Operator (NYISO); also called Curtailment Service Provider (CSP) or Demand Response Provider (DRP).
A regulated public utility that provides energy service to consumers in San Diego and southern Orange counties. NRGCS administers multiple programs in SDG&E territory, referenced as Cut Back California or PowerPay! California.
A regulated public utility that provides reliable electric service to central, coastal and southern California. NRGCS administers multiple programs in SCE’s territories, referenced as Cut Back California or PowerPay! California. NRGCS has a direct contract with SCE through 2013, pending approval by the California Public Utility Commission.
Demand response participant in NYISO’s Installed Capacity market. NRGCS’ PowerPay! New York programs are developed under the rules of the SCR program.
Amount of electricity you use over a period of time; measured in kWh.

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