Control. It's a business model. just like a power plant, CH4 or coal fired, or nuclear. You build it, then charge for it. Economy of scale should make it cheape

Control. It's a business model. just like a power plant, CH4 or coal fired, or nuclear. You build it, then charge for it. Economy of scale should make it cheaper per watt. Also, different customers. decentralised is still a good idea, but not enough to power the future.