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Capacity (electricity)

Capacity refers to the maximum amount of power available from an electric resource or the maximum capability of an electric device to transmit p …

Capacity factor

Capacity factor is a quantity that describes how fully the capacity of a given power plant is utilized.

Capacity payment

A capacity payment is made by a user of an energy asset to the owner of that asset in return for the rights to utilize the asset’s capacity.


Monetary capital is the money required to acquire and construct long-term assets necessary to build and reliably operate an electric or natural …

Capital expenditure

Capital expenditures refer to money spent to buy or build assets with a life longer than one year.

Capital structure

Capital structure, also referred to as a company’s debt/equity ratio, describes the amount of debt compared to the amount of equity a company …

Carbon capture and storage

Carbon capture and storage (CCS) is the process of capturing waste carbon dioxide from industrial facilities or power plants, transporting it to …

Carbon negative

Carbon negative refers to an entity or a process that has a net effect of removing greenhouse gases from the atmosphere.

Centralized generation

Centralized generation, also sometimes called utility-scale generation, describes electric power plants that connect to the transmission grid (a …

Certificate case

A certificate case is a regulatory proceeding to evaluate a utility’s application for a Certificate of Public Convenience and Necessity (CPCN) …

Certificate of Public Convenience and Necessity

A Certificate of Public Convenience and Necessity is a permit granted to a utility that authorizes it to a) provide service to a new area, b) en …


A circuit is an intentional close-looped path through which electrons move to provide energy.

Circuit breaker

A circuit breaker, sometimes simply called a breaker, is an electrical switch that can be automatically or manually operated and reset. Circuit …

Circuit protection

The electric transmission and distribution systems require equipment to protect against a wide variety of electrical conditions that can damage …

Clean air vehicle (CAV)

A CAV is a vehicle that emits significantly fewer pollutants than traditional gasoline- or diesel- powered vehicles.

Clean energy standard (CES)

A clean energy standard, or CES, is a regulatory requirement obligating utilities, generation authorities, or load-serving entities to acquire a …

Climate change

Climate change is defined as a long-term shift in global or regional climate patterns.

CME Group

CME Group is an American global markets company. It is important because it operates many key energy futures markets in the U.S.

Coal electric generation

The ready availability of low-cost coal historically made coal-fired generation a favorite of many utilities around the world. Most coal-fired g …

Coal steam turbine

A coal steam turbine burns coal to create steam which is then used to generate electricity.