Integrated Distributed Energy Resources

Renewables Integration

Deploying and operating enough flexible, controllable resources to ensure grid reliability given the variability and uncertainty associated with intermittent renewable power generation. [Source: California Energy Commission (CEC) Website:]

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Proved or Proven Reserves

In context of natural gas, refers to the estimated quantities that are believed recoverable in future years from known reservoirs under existing economic and operating conditions. Volumes of natural gas placed in underground storage are not considered to be “proved reserves.” [Source: Energy Information Administration (EIA) Website:]

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Lean Burn

A “lean burn” engine uses a relatively lean amount of fuel in the engine’s combustion chamber. On a comparative basis, lean burn engines use less fuel than “rich burn” engines, thereby producing fewer emissions per unit of output. (The Code of Federal Regulations, Title 40, Part 63.6675, defines “lean burn” engines as any engine that

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