Just store the excess electricity in large buckets until needed.
How about large tanks of crushed Granite or basalt which is literally dirt cheap.
They hit on the same point, it’s all the same math. Build out 3x to 4x solar and put cheap energy storage right next to it this allows you to now send 24/7 dispatchable power from that asset just like any other power plant. $19 MWh in storage costs is a true game changer that’s 1.9 cents per kWh with grid solar at under 4 cents kwh you are now cheaper than gas turbines even with $3 MMBtu gas which won’t be seen again probably ever this says nothing of a $25 per ton co2 tax which the EU already has and we will have at least that much in carbon tax here before this term is up.
““One of the totally obvious use cases is solar farms, because even in very decent areas with high insolation, they have a really terrible use of their electrical infrastructure for the simple reason that for half the day, on average over the year, there’s no power going through their transmission lines.
“If you placed these types of storage systems decentrally, behind the meter at solar farms you could have three or four times the PV capacity on a given transmission network and supply 24-hour solar PV. This would not only solve the problem of variability, but would also help reduce your investment in grid capacity.”
He adds: “The variability in solar PV is so predictable, the sun comes up every day. For wind, it’s somewhat different, because winds can be calm for several days at a time. And it is a little more difficult to solve that completely with storage — you’d need much more than one-day [of storage] capacity for wind. Still, one full day of storage goes a long way towards mitigating the challenges of variability.”