> we need base load capabilities when the wind isn't blowing and the sun is down That's not a proper use of the concept "base load". We used to have plants wh

> we need base load capabilities when the wind isn't blowing and the sun is down That's not a proper use of the concept "base load". We used to have plants which are only cost-effective when run 24/7, but are cheaper than other kinds. The concept of "base load" is to build those kinds of plants to meet roughly the lowest daily usage so as to minimize costs. It isn't a substitute for "capacity needed when renewables aren't generating".