In Las Vegas, most of the big casino companies are off or getting off NV Energy's grid. They've built their own solar farms and solar furnaces, or are contracting with other companies that have them.
You mention the set percentage of return. Having a massive customer like Caesar's jump ship hurts NV Energy enough that the hotels have to pay huge "exit fees," and if they don't NV Energy threatens to pass the loss on to the customers.
In the case of MGM, it had to pay $87 million to go solar[1]. Otherwise, NV Energy would have charged each of its residential customers $200 to make up the difference.
You mention the set percentage of return. Having a massive customer like Caesar's jump ship hurts NV Energy enough that the hotels have to pay huge "exit fees," and if they don't NV Energy threatens to pass the loss on to the customers.
In the case of MGM, it had to pay $87 million to go solar[1]. Otherwise, NV Energy would have charged each of its residential customers $200 to make up the difference.
[1] https://www.reviewjournal.com/business/energy/mgm-resorts-to...