alt Hacker News> There is no excuse for every government in the world to not be covering every bit of rooftop or scrap land with solar.
is it intentional hyperbole and you mean something else, or are you making exactly this kind of claim?
because there are many many caveats to add here (even if we go with plan that specifically governments should be doing it)
For start: land with legitimate environmental protection, land where connecting power would be ruinously expensive, area likely to be destroyed by floods and landslides or scheduled to be overbuilt and so on...
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Its a bit hyperbolic, but you know what I mean. Build it out very rapidly.
https://www.google.com/maps/place/Pakistan/@30.1940381,71.49...
You can look at random cities in somewhere like Pakistan and see their rooves are covered in solar from a boom that has occurred in only the past 2-3 years. In comparison I live in a far wealthier country and people hesitate.
Land is not a constraint in many places, definitely not in the US. Something like half the corn harvest is already used for solar energy in the form of ethanol. PV produces 20x the useful energy that corn for ethanol does, converting that land to PV would produce 3x the electricity we currently consume. On top of that there's other bio-energy crops like soy bean oil, or land that shouldn't be used for farming at all due to unsustainable water practices.