- Let's make it mandatory to install fixed solar systems for new development areas and any newly build commercial buildings. The state will subsidize 90% of the cost for the initial setup for private households, for companies it's just a tax deductible expense.
- You want to retrofit your existing house with a fixed solar system? That's 90% subsizidation for you, too!
- You have a multi-party house (details needed) or a professional housing company? You'll have to retrofit your buildings in 5 years of time from now on.
- Let's retrofit all public buildings with solar systems. No excuses, execution asap.
- The state will encourage research and development of energy storage sytems by providing funds to universities etc.
We'll also need to have lots of laws changed and have our energy companies put in to place, but if the cost is low for the individual person, people will just make this happen.
Yeah, it will cost some money, but the money is there, it's just an allocation problem.
I don't know what the acceptance percentage as well as a realistic manufacturing rate is at such an order size (probably pretty fast), but it sounds like you're assuming the answers are "near 100%" and "a few years".