Research and claims in context / Evidence record
guidance source
24/7 Hourly Matching of Electricity
What does annual matching establish compared with hourly/regional matching?
U.S. Environmental Protection Agency · Publication date not recorded · Source page updated: 2025-12-12 · Checked 2026-10-31
- Data period
- Explanatory procurement definitions; no measured hourly dataset is admitted.
- Scope
- Annual-volume matching and hourly/regional matching as described by EPA.
- Method
- Agency explanatory definitions, not a buyer audit or grid-emissions calculation.
- Assumptions
- The distinction concerns timing and geographic matching rather than a specific contract.
- Uncertainty
- The source does not establish current product availability or a named project’s physical grid supply.
- Funding and interests
- EPA is the issuing agency. No separate external funding for the selected explanation was established.
- Reuse
- Not recorded. Read the source notice and original source; no reuse licence is implied.
- Attribution
- Source: U.S. Environmental Protection Agency; minimal independently worded definitions with original link; no endorsement.
- Source notice
- Source copyright and any applicable third-party rights are retained. Minimal independently worded attributed facts and ordinary unframed links only. No copied passages, figures, tables, model inputs, images, databases or broad source-use grant; no endorsement. No open licence is asserted unless separately identified for the exact component.
- licence url
- Not recorded
- What it cannot establish
- A named PPA’s performance, local carbon intensity, congestion, additionality or zero emissions.
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