[orwin]

> If you build a power station and undercut everyone else they will have to lower their prices, just like every other market.

It does not work like that. You're paid the price the most expensive power station running is setting. And as the most expensive power stations earn via the capacity market, what you do is keep your old gas/coal power station spot price set really high, and you'll profit anyway.

Also, electricity 'price' set for wind and solar are 0, good luck getting lower.