The reference system for U.S. energy analysis

Developed by EIA to anchor the federal government’s energy outlook

Represents real-world U.S. energy markets, policies, and infrastructure

Captures technology detail, market behavior, and regulatory constraints

Supports internally consistent, economy-wide policy analysis

Solves for supply, demand, prices, and emissions within a single framework

NEMS can be thought of as having layers like an onion: separable representations are possible, yet the system remains highly interconnected, thus enabling transparency and rigorous, economy-wide, policy-relevant analysis

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