"However, for a variety of reasons, SSP5-RCP8.5 now looks increasingly unlikely as a ‘business as usual’ emissions pathway. There are several reasons for this.

"However, for a variety of reasons, SSP5-RCP8.5 now looks increasingly unlikely as a ‘business as usual’ emissions pathway. There are several reasons for this. Firstly, the costs of renewables and batteries have declined extremely quickly. Historically, models have been too pessimistic on cost declines for solar, wind and batteries: out of nearly 3,000 Integrated Assessment Models, none projected that solar investment costs (different to the levelised costs shown below) would decline by more than 6% per year between 2010 and 2020. In fact, they declined by 15% per year." Nice to see this in writing, lots of studies are based are on pre 2010 solar and battery prices. Recent updates: https://www.lazard.com/perspective/levelized-cost-of-energy-levelized-cost-of-storage-and-levelized-cost-of-hydrogen/ https://www.lazard.com/perspective/levelized-cost-of-energy-...