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🌱 Carbon Layer

This project feeds carbon intensity data from the National Grid official Carbon Intensity API to a carbon intensity consumer contract which exposes its state to be used as part of a composed stack enabling other contracts to limit compute to times of low carbon generation, in other words, services can run in eco-mode.

Sepolia Addresses

Contract Address
Operator 0xd3e4028bC6b50091112641b565bE049f535D6299
Carbon Layer 0x1749456Bd2Fe5D37AFBD73Bb59995e89F97aDce4
Carbon Assert 0xA3A6C7865706E5E9cc594c3FC5ef534C50316Ab5
Carbon Query 0x82c2F109A7979909Da4894f5EeF8085Ed90686dd
Upkeep 0xFe7B5DB07b96Dff57A200cB8a34aAbc654C6aD66
Oracle Node 0x44A1542d44df86f7AC5Fed208cc77D39E6F18eC0

Chainlink Node

  • Configure & launch a node either:

    • according to the docs, or
    • following the readme for a docker compose setup. (Recommended)

  • Access the node dashboard http://localhost:6688

  • Fund your node address with ETH

  • Add the intensity.toml and mix.toml from jobs

  • NOTE: don't forget to set up a view role docs

Chainlink Data Feed

  • Deploy an instance of the operator and save the address.

  • Set the node address as an authorised sender on the Operator

  • Deploy an instance of CarbonLayer

  • Fund CarbonLayer with Link. Each update costs 0.2 Link

  • NOTE: TODO: investigate access control modifier on fulfillOracleResponse functions ???

Chainlink Automation

  • Deploy and fund a new upkeep on Chainlink Automation

  • Create a time interval based upkeep that points to Carbon Layer. The upkeep should call the update function with the Operator address and the job id's for Get UK Carbon Intensity Index & Get UK Carbon Intensity Mix.

  • Copy the Upkeep address from the Chainlink Automation dashboard and call setAutomation on Carbon Layer to authenticate the upkeep.

  • NOTE: gas limit should be >= 250,000

  • NOTE: api update interval = 30min

Chainlink CCIP

  • TODO: look into replicating state across chains. What effect will the CCIP delay have on the service.

  • NOTE: don't forget the deployer nonce needs to be the same one all chains

Sample Integrations

  1. Carbon Compute

  2. Carbon Hook

Hardhat

npx hardhat help
npx hardhat test
REPORT_GAS=true npx hardhat test
npx hardhat node
npx hardhat run scripts/deploy.ts