Methodologies
The OpenEAC Alliance publishes open methodologies for measuring what distributed energy resources do. Each is reviewed by members of the Alliance, and every methodology inherits the Shared Guidelines.
A methodology’s address names its version: the date at the end is the version that a certificate cites, and that page does not change once it is approved.
Standard methodologies
Methodologies maintained by another standards body, which the Alliance recognizes.
| Methodology | Maintained by |
|---|---|
| Whole-Building Weather Normalized Metered (OpenDSM EEMeter) | LF Energy |
Metered methodologies
The impact is measured from the meter or the sensors of the Asset itself, and the Counterfactual is adjusted for the weather that occurred.
| Methodology | Granularity | Version |
|---|---|---|
| Self-Consumed solar PV generationPDF | Device | 2024-11-04 |
| Whole-Building Electrification and Efficiency | Building | 2025-02-07 |
| Metered Lighting UpgradePDF | Device | 2025-02-07 |
| Seasonal Consumption Controls | Device | 2025-08-21 |
| Weather Normalized Metered Demand Response | Building | 2025-10-02 |
| Weather Normalized Metered Load Shifting | Building | 2025-10-02 |
| Heat Pump with Sensors/Thermal Storage | Device | 2026-02-04 |
Modeled methodologies
The Asset carries no meter data for the end use, so the impact is derived from the attributes of the building and a reference load profile. A methodology here applies where no metered methodology can.
| Methodology | Granularity | Version |
|---|---|---|
| Device-Level Electrification and Efficiency | Device | 2025-02-07 |
Related methodologies
| Methodology | Version |
|---|---|
| Decarbonization Accounting | 2025-02-07 |
| Demand Efficiency Calculations | 2026-02-19 |
| Utility Bill Savings | 2026-06-23 |
| Grid UtilizationDraft | 2026-11-11 |
How a methodology is approved
- The authors publish a draft open to public comment.
- The maintainers list it on this page.
- A public comment period of at least 30 days opens.
- The authors revise the methodology from the comments.
- The final version is approved and archived with its full comment history.
A change to an approved methodology requires notice to all of its reviewers.
Comment or propose
To comment on a draft, open it from the tables above and send your comments to the Alliance’s Google Group. To propose a methodology, send it to mcgee@wattcarbon.com.