This is a very poorly worded comment. I had to read it multiple times to get your point: Gas plants that run continuously (combined-cycle) have much higher effi

This is a very poorly worded comment. I had to read it multiple times to get your point: Gas plants that run continuously (combined-cycle) have much higher efficiencies than peaker plants, so solar+peaker can have a lower efficiency than combined-cycle gas plants on their own. I have a few questions about this. How do combined-cycle plants adjust to changes in demand? Do we need to compare solar+peaker to combined-cycle+peaker to have a fair comparison? Or do combined-cycle plants allow for lower changes in output than peakers, such that (e.g.) a 10% solar 90% combined-cycle system could adjust as well? The grid is a whole system, not just two power plants. Finally, nobody is advocating for just solar+peaker. Solar+wind+peaker will easily get you over the 32% threshold, as solar and wind tend to provide power at different times (not perfectly, sadly). If you have some storage available (preferably hydro, but possibly other), then you get an even higher effective capacity factor.