OpenEAC Alliance

Welcome to the OpenEAC Alliance Methodology Repository

The OpenEAC Alliance is a volunteer organization comprised of individuals and organizations with experience developing measurement and verification techniques. Each methodology is reviewed by members of the OpenEAC Alliance and each change to an approved methodology will require notification of all reviewers.

For meeting updates and up-to-date communication, see our substack.

For a list of our methodologies and their statuses, go to this page.

For a link to the github page storing this work, go to this page.

The listed methodologies have been used for Measurement and Verification of a variety of grid interventions, such as battery storage installation, electrification, demand response, and energy efficiency projects.

Submission

Individual methodologies are added by Request. New methodologies are initially written in a google doc that allows for public comment. The link is then be shared with one of the OpenEAC Alliance maintainers (such as mcgee@wattcarbon.com) so that it can be added to the list of methodologies.

Approval Process

The approval process proceeds in several steps:

A draft methodology is published for implementation by one or more stakeholders (using google docs with public comment permission).
This document is shared with the OpeneEAC Alliance maintainers to be posted onto methods.openeac.org
A minimum 30-day public comment period is opened.
After the comment period is closed, the authors update the methodology based on feedback.
A final version is published as a PDF copy, which is added to the approved_documents section of the repository along with that document’s public comment history.

Glossary

EAC (Energy Attribute Certificate): represents a unique claim to the environmental benefits of a decarbonization project. EACs are granular certificates assigned to a watt-hour of energy or a gram of CO2e that specify all attributes of the underlying energy resource, including Asset type, production time, precise location, local grid carbon emissions intensity, resource operation start date, and reporting requirements.
Asset: describies the energy intervention that results in EACs, such as a solar panel system, battery, demand response event, or building that underwent an energy efficiency upgrade. An Asset exists at a point of metered interconnection between a production or consumption Asset and a network of other Assets that share a common and bounded electricity grid where all imports or exports of electricity to this grid are metered.
Meter: The source of measured data used to calculate the impact of the Asset.

We also have written up a general document that includes guidelines to be applied to all methodologies and can be found here

Methodologies

Standard M&V Methodologies

Methodology	External Entity	URL
Whole-Building Weather Normalized Metered (OpenDSM EEMeter)	LF Energy	link

Custom M&V Methodologies

An asterisk (*) Represents that the methodology is within the comment period.

Methodology	Granularity	Published Date	URL
Self-Consumed solar PV generation	Device	2024-11-04	link
Metered Lighting Upgrade	Building	2025-02-07	link
Seasonal Consumption Controls	Device	2025-08-21	link
Heat Pump/HPWH with Sensors	Device	2025-08-21	link
Weather Normalized Metered+Modeled EE/Electrification	Building	2025-02-07	link
Weather Normalized Metered Demand Response	Building	2025-10-02*	link
Weather Normalized Metered Load Shifting	Building	2025-10-02*	link

Methodology	Published Date	URL
Decarbonization Accounting	2025-02-07	link

Maintainers