It’s a combination of factors:
1. As a consumer: In the long term panels will save you on your bills but as an initial cost you need a massive capital outlay to install them.
2. As a power company, traditional fuel stations are more profitable.
3. The panels are considered ugly, a lot of people dont want them on their house
4. Historically they have not been particularly efficient. The panel needs a battery to be truly efficient and these are not easy to obtain on the open market (in the UK theres a company called social energy that has just started doing them in the past couple of years, prior to that..nothing) as you often need energy at a time when the sun isn’t out.
Theres some other stuff but that’s the stretch of my memory for the moment
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