Comment by jakewins

We use solvers throughout the stack at work: solvers to schedule home batteries and EVs in peoples homes optimally, solvers to schedule hundreds of thousands of those homes optimally as portfolios, solvers to trade that portfolio optimally.

The EU electricity spot price is set each day in a single giant solver run, look up Euphemia for some write ups of how that works.

Most any field where there is a clear goal to optimise and real money on the line will be riddled with solvers