Grounded in science. Designed for impact.

When it comes to sustainable Bitcoin mining, one size does not fit all.
GP4BTC participation criteria reflect various ways miners and hosting companies can advance the clean energy transition - from procuring renewables directly, to siting in low-carbon grids, to enabling more renewables on the grid through beneficial load flexibility.

Developed in partnership with over 35 miners, NGOs, governments, grid operators, and other energy and crypto market participants, GP4BTC criteria align with best practices for sustainability leadership in other industries.

Design Principles


Aligned with established location and market-based methods for measuring and mitigating Scope 2 emissions as developed by the Greenhouse Gas Protocol and World Resources Institute


“Forward compatible” with emerging approaches to clean electricity procurement, such as 24/7 carbon free electricity matching and avoided emissions accounting


Mindful that criteria should reflect the unique properties and needs of different regions and grids, since sustainability doesn’t look the same everywhere


Designed to incentivize and reward actions that result in tangible and lasting emissions reductions


Helps miners put sustainability at the forefront of near-term decision making and long-term strategy.

In 2023, miners and hosting companies can obtain Green Proofs for Bitcoin certification by achieving either a Clean Energy Score or a Grid Impact Score higher than 50.

Scores are calculated retrospectively for previous calendar years. At launch, Energy Web will offer certifications for calendar years 2021 and 2022.

Clean Energy Score

The Clean Energy Score recognizes miners with operations primarily powered by non-emitting electricity sources (wind, solar, nuclear, and hydro) by evaluating the proportion of their electricity consumption that is supplied by clean energy via the local grid mix.
The Clean Energy Score is calculated by:
Multiplying the total electricity use at a mining site by the proportion of clean energy in the grid mix supplying that site1
Aggregating the value of (1) for all mining locations; and,
Dividing (2) by the miner’s total electricity consumption across sites.

The Clean Energy Score may be calculated using either annualized electricity demand and grid mix values or more granular data (e.g. monthly or daily) values.
1 Global resource/fuel mix data is sourced from the Environmental Protection Agency, the Environmental Information Agency, Statistics Canada, and similar sources.

Grid Impact Score

The Grid Impact Score recognizes miners that pursue sustainability strategies driven by market-based clean energy purchases and participation in demand response programs.
The Grid Impact Score is calculated by:
The emissions implications of a miner’s operations and the emissions mitigation potential of its renewable energy purchases, based on marginal emissions data; and,
The miner’s contributions to grid stability via participation in demand flexibility programs.
The net emissions impact of a miner’s operations and renewables purchases (item 1 above) accounts for 70% of the Grid Impact Score; grid stability contributions (item 2 above) account for the remaining 30%.
The Grid Impact Score is calculated as follows:
= Market-based clean energy purchases from a given location2 
ME rate
= Marginal Emissions rate 3,4
GS Score
= Grid Stability Score, expressed as 0, 50, or 100.
= Miner did not participate in a market-based demand response program during the reporting year
= Miner enrolled in a market-based demand response program but did not participate in any flexibility events
= Miner enrolled in a market-based demand response program and participated in one or more demand response events (i.e. delivered load reduction when dispatched)
2  Clean energy purchases reported within the Grid Impact Score must be documented in alignment with GHG Protocol Scope 2 Guidance (
3  For more on marginal emissions, see
4  Marginal emissions data is sourced from the Environmental Protection Agency, the IFI Technical Working Group on GHG Accounting, and similar sources.

What’s next?

The tools, technologies, and policies driving energy-sector decarbonization are evolving rapidly. We plan to update certification requirements annually in consultation with miners, platform users, and others to align with evolving sustainability reporting best practices. Updates planned for 2024 include an expanded framework for evaluating and quantifying grid stability contributions. To discuss current or certification requirements, please contact us.
Green Proofs for Bitcoin is a first-of-its-kind initiative to showcase Bitcoin miners taking action on climate goals. By delivering transparency and consistent metrics, we drive ROI for companies mining sustainably, creating a virtuous cycle where clean mining is easier to define, pursue, and monetize. Our goal is to make sustainable Bitcoin mining ubiquitous and to make the Bitcoin industry an accelerator of the clean energy transition.
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