3 ms·

I'd be curious to see those reports :)

bjourne 5y ago
"Despite some debate, most experts agreed that 100 percent renewable energy was feasible. Is it economically or politically feasible - that's a very different question." https://www.sciencealert.com/these-climate-experts-say-100-renewable-energy-is-completely-feasible-for-entire-countries https://www.sciencealert.com/these-climate-experts-say-100-r... Also see the links posted by bryanlarsen.
- edhelas 5y ago
  > "The Earth receives 23000 TW of solar energy, while the global energy consumption is 16 TW. Therefore, [100 percent renewable energy] could be possible even if we capture only 0.07 percent of the solar energy" says Professor Xiao Yu Wu, an energy expert from MIT. Sure, doesn't solve the night issue. Having energy is something, having a stable production from a very diffuse and non stable one (day/night) is something else. > Iceland power near 100 percent of its electricity from renewable energy, using their abundant geothermal and hydro supplies. Renewable energy can also dominate electricity needs for more populous countries too. So geothermal and hydro. > About 80 percent of Brazil's electricity needs for its 209million people come from renewable sources, biomass and hydro mostly. On average, however, renewables power ~29 percent of electricity around the world. So can renewables reach 100 percent for populous countries? So biomass and hydro. > He argues that *there is a heavy reliance on hydro and biomass sources* - while most countries don't have access to these, so would be reliant on sources like solar, wind, and storage. In those circumstances, it's highly unlikely for renewables to power 100 percent of the electricity supply he says. Well thanks, the article itself is making the point I want to make.
  - bjourne 5y ago
    The article claims that "most experts agreed that 100 percent renewable energy was feasible", yet you decide to quote one of the contrarian experts. Why? In either case, I have satisfied your curiosity; the article links to a number of reports claiming that 100% renewable electricity is possible.
  - pfdietz 5y ago
    The Earth actually received 100,000 TW of solar energy. The 23,000 must be that fraction that hits land?

"Despite some debate, most experts agreed that 100 percent renewable energy was feasible. Is it economically or politically feasible - that's a very different question." https://www.sciencealert.com/these-climate-experts-say-100-renewable-energy-is-completely-feasible-for-entire-countries https://www.sciencealert.com/these-climate-experts-say-100-r... Also see the links posted by bryanlarsen.

edhelas 5y ago
> "The Earth receives 23000 TW of solar energy, while the global energy consumption is 16 TW. Therefore, [100 percent renewable energy] could be possible even if we capture only 0.07 percent of the solar energy" says Professor Xiao Yu Wu, an energy expert from MIT. Sure, doesn't solve the night issue. Having energy is something, having a stable production from a very diffuse and non stable one (day/night) is something else. > Iceland power near 100 percent of its electricity from renewable energy, using their abundant geothermal and hydro supplies. Renewable energy can also dominate electricity needs for more populous countries too. So geothermal and hydro. > About 80 percent of Brazil's electricity needs for its 209million people come from renewable sources, biomass and hydro mostly. On average, however, renewables power ~29 percent of electricity around the world. So can renewables reach 100 percent for populous countries? So biomass and hydro. > He argues that *there is a heavy reliance on hydro and biomass sources* - while most countries don't have access to these, so would be reliant on sources like solar, wind, and storage. In those circumstances, it's highly unlikely for renewables to power 100 percent of the electricity supply he says. Well thanks, the article itself is making the point I want to make.
- bjourne 5y ago
  The article claims that "most experts agreed that 100 percent renewable energy was feasible", yet you decide to quote one of the contrarian experts. Why? In either case, I have satisfied your curiosity; the article links to a number of reports claiming that 100% renewable electricity is possible.
- pfdietz 5y ago
  The Earth actually received 100,000 TW of solar energy. The 23,000 must be that fraction that hits land?