Gitcoin: Emissions Estimation

Climate Alpha Round

To get the climate round estimate, my plan was to:

Use Google BigQuery to get the total gas spent on the climate round smart contract
- Get the start and end timestamps of the round
- Get the contract address
- Input the right values in the code snippet in Gas estimation queries
- Query on Google
Then, with the gas value, multiply it by the most recent Offsetra emissions estimate, before they set it to 0 at the Merge. (Here — 0.0002522790155063084 tCO2e / unit of gas
The result would be the pre-Merge estimate. I was then going to multiply by 0.00008, which applies the 99.992% reduction estimated by CCRI, (toggle here) 👇
It’s a very rough methodology but the best I could come up with given time constraints etc

Gitcoin chose to use the methodology employed by carbon.fyi to assess the climate impact Grants Round 12 activity on Ethereum mainnet.

Carbon.fyi provides a thorough, well-explained methodology for estimating the carbon footprint of Ethereum transactions.

For Gitcoin’s estimation, we included:

Gas consumed by all the transactions sent to the Gitcoin Bulk Checkout contract on Ethereum mainnet between Block 13722253 and Block 13819261, the duration of GR12.	`359994125`
Gas consumed by the grants claim contract used in GR11. There were a similar number of grant projects in GR12, so they felt this was a reasonable proxy.	`30249823`
—————————————————————————————————————————————	——————————
Total gas used by Gitcoin GR12 on Ethereum mainnet.	`390243948`
carbon.fyi’s HIGH estimate for CO2e emissions per unit of gas	`0.0003895583921`
Multiply total gas x CO2e emissions per unit of gas	`~152,022.80` kg CO2 emitted

<aside> 💎 152.0 metric tonnes of CO2e emitted from GR12 mainnet activity

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