1. In a GREAT paper (why isn't it published??), Anthoff, Dennig & @johannesemm.bsky.social show that most IAMs have a hidden goal of a uniform price and define Negishi weights to arrive at that goal. Yet, carbon price should grow at the discount rate (at least under a carbon budget constraint)...

Agreed. Socioeconomically optimal values have been found at roughly 83%. And even then, political and social implications need to be anticipated and addressed.
NB: Even the 55% target has not yet been digested. We found people believe the EU will only manage 43% by 2030. More Credibility is needed.

Huge thank to the lead author Rik van Heerden
and co-authors: Oreane Y. Edelenbosch, Vassilis Daioglou, @thomaslegallic.bsky.social , Luiz Bernardo Baptista, Alice Di Bella, Francesco Pietro Colelli, @johannesemm.bsky.social , Panagiotis Fragkos, Robin Hasse, Johanna Hoppe [...]

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Results: By 2050, direct CO₂ emissions drop ~65% in buildings & ~70% in transport (vs. current policies).

Demand-side strategies provide climate benefits!

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good point, first post on Bsky, still learning :-) reposting