i disagree,

no big miner gets electricity for free, otherwise the power provider is at a loss no matter how you put it. Solar... who buys the pannels, cables, maintains it? same with all other you mentioned items.

Bitcoin is an abitrage to set a base fee globally on electricity.

Lets explain what i mean by that:

Country A has hydropower and sells 1kwh for 0.5c

Country B has nuclearpower and sells 1kwh for 0.2c

Country B will set the price global (the cheapest price) therefore will get every BTC miner. Country A will either stop with hydro, or has to reduce its price to 0.2 which means they are forced to get much more efficient. So all electricity prices will globally converge to a single global electricity price. When that is the case we then know how much 1 kwh/ is in satoshi terms.

Some country's that do NOT produce their own energy sufficiently enough will default (like switzerland who has a net negative and imports electricity).

You might ask why this will happen, it is because you can sent bitcoin globall and arbitrage the electricity price away in every country on every block (10min).

So what else does this lead to?

It will make it possible to set a fair price on every product on earth because every product on earth needs energy to produce.

- rice, seeding it has near 0 cost, rain lets it grow, so you have only the farming cost (energy used there)

- a machine with thousands of parts, will be very costly because so much energy was put into the product.

- cement, aluminium extremely expensive because huge ammounts of energy is used to produce them.

Additional benefits:

It makes useage of waste very very lucrative....

- Plastic waste can be converted via pyrolisis to gas and oil

So Bitcoin will first over the next 10-15 years arbitrage the electricity price in satoshi terms globally.

After that it will arbitrage every product to its true value in what it consumed in energy to produce