Comment on Solar modules now selling for less than €0.06/W in Europe
frezik@midwest.social 9 hours agoTotal solar manufacturing capability has been increasing exponentially. So has wind, and so have various storage methods.
Yes, we can install enough.
dgmib@lemmy.world 8 hours ago
Solar has been growing exponentially for the past decade or so, wind has not. Wind has run into supply chain limitations on rare earth metals such as neodymium and isn’t growing exponentially anymore.
It’s doubtful that solar will continue growing exponentially for the next 20 years but even if it does, that only gets us to the point of enough capacity to displace the ~17.9 PWh of electricity generated by fossil fuels in 2023.
To get off of fossil fuels we need to change everything else that’s burning fossil fuels too. That means every vehicle replaced with an EV, every gas furnace replaced with a heat pump. As we do that it’s going to 2-3x electricity demand.
The world burned 140 PWh worth of fossil fuels in 2023, and we only generated 1.6 PWh from solar power. That 1.6 is up from 1.3 PWh in 2022. A lot of that 140 PWh was wasted heat energy so we don’t need to get that high, but we still need to generate something in the area of 60-90 PWh of electricity annually to eliminate fossil fuels.
~4/5th of our energy still comes from fossil fuel, we have a long f’ing way to go. Even with the current exponential growth of solar we don’t get off of fossil fuels within 20 years, and that’s assuming global energy demand doesn’t increase.
Don’t take my word for it. Extrapolate the data yourself. Your rose coloured glasses aren’t helping.
bzah@discuss.tchncs.de [bot] 7 hours ago
That’s why we also need to reduce our use of pretty much everything. We can never reach zero fossil fuel used, unless we start by reducing the amount of stuff we buy/use, starting with things that currently use fossil fuels: cars, shipping, flights, plastics and so on.
Then we could use renewable energies only or nuclear only or a mix of both to power what is truly necessary for our lives.
frezik@midwest.social 8 hours ago
Except that this has actually been studied, and a future with Wind/Water/Solar (WWS) is completely viable without a single new megawatt of nuclear.
www.amazon.com/…/1009249541
dgmib@lemmy.world 7 hours ago
It’s not a question of viability it a question of time.
Can we replace all fossil fuels with wind and solar power only? Absolutely.
Can we do it by 2050? Not without a miracle.
frezik@midwest.social 7 hours ago
Yes, we can. Again, this is all part of these studies. It is easily the most economical viable and fastest plan.