so expensive stuff like solar panels and wind turbines aren't gonna have a long lifetime there.
Solar panels are not expensive
They are dirt cheap, since years.
If your country was not run by Yahoos, you had factories that chum them out and you would sell them in Africa, instead of China.
An 850W panel costs about THB1000, that is roughly $28.
A 4kW mini installation is 5 panels and roughly $125 - $135.
There are people who run DC appliances directly from the panels, no inverter or batteries involved. For example a pool pump.
Solar panels are expensive in your country, because:
1) they are shipped around half the planet - hint, oil costs
2) some moron thought it is smart to put a high import duty on them
3) there are probably a-hole rules how to set up a small plant
Many solar things are appliances ... for example a street light, with a square foot of solar on top and a battery. It is cheaper to set up than to pull extra power lines and have "normal" lights. Most modern lights are all LED ... so the power cost is insignificant, the battery has 30years warranty. Or the G5 repeaters in the village ... of course they are all Huwei :P
P.S. there are half a dozen new solar technologies getting ripe for the market. However all the technologies to produce them, do not exist in the USA ... because the only thinks you can do are some processors, macs and fighter bombers. Just as if you are not interested in "technology" anymore. If you had not that Eloi, USA had probably no high tech at all anymore.