XLDES
The dunkleflaute problem ( a couple of weeks with little renewable generation) has a short term solution, but is a long term problem and I see no research or policy addressing it. ( nuclear is not the answer as I've explained on numerous occasions) In the short term it is possible to restart gas powered combined cycle generators ( CCGT) and handle the variability of demand using batteries that will have been added in earlier phases. As I've commented before these need to be owned by the grid and out of the market model. They will be costed on an annual generation / power capacity basis as the generator of last resort. They will use the written off CCGT assets. However we don't want to use natural gas due to the fugitive leakage issues in mining, pipes, ships etc. By some estimates this makes USA shale gas worse than coal. We could make the gas by biological anaerobic digestion of waste food ,leaves and animal waste. However unl...