Questions, answered plainly
Including the ones that are awkward for us. If something is missing, email hello@carbonguide.io and a person will reply.
Buying
Proof and retirement
Quality and ratings
Honest limits
What the ratings mean
Our confidence in the evidence behind a tonne, on the scale everyone already understands.
- AAA
- Very high confidence
- Strongest evidence that a tonne claimed is a tonne delivered.
- AA
- High confidence
- Durable, well-evidenced projects with low reversal risk.
- A
- Good confidence
- Solid additionality and measurement, with some residual uncertainty.
- BBB
- Moderate confidence
- Credible projects where some assumptions carry real uncertainty.
- BB
- Some confidence
- Material uncertainty in baseline or permanence.
- CCC+
- Low confidence
- Cheapest tonnes, weakest evidence. We rarely recommend these alone.
That is everything
Pick a basket, enter your tonnes, get your certificate. About three minutes.