Establishing scaled-up crediting program baselines under the Paris Agreement: Issues and options

This technical note offers guidance and identifies options for developing baselines for scaled-up crediting programs under the Paris Agreement. Establishing baselines is partly a technical, methodological challenge, but the biggest uncertainties arise from unresolved questions regarding international rules under Article 6 of the Paris Agreement, as well as how crediting programs may interact with achievement of countries' "nationally determined contributions" (NDC).