WattTime provides electricity-grid emissions data, including a current CO2 marginal emissions index by grid region.

API

What your agent can do

  • Retrieve WattTime's current CO2 marginal emissions index for an electricity-grid region.

    Via API.

Tasks depend on the interface and permissions.

Connection methods

Choose a route that fits your agent.

API connection
API path
https://api.watttime.org/v3/signal-index

Authentication
You must include your token in an authorization (bearer) header in subsequent requests to retrieve data.

Documentation & experience

  • 1 of 1 connection paths checked
  • Latest documentation check 11 Oct 2026
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