4 ms·

> I don't think you will find a day where there is no sun and no wind in all of europe. For the US PJM (US east coast and midwest) and CAISO (California, Orego

> I don't think you will find a day where there is no sun and no wind in all of europe. For the US PJM (US east coast and midwest) and CAISO (California, Oregon, Washington, Nevada) grid areas, total wind power fluctuates over a 4:1 range on a daily basis. Both grids post dashboards where you can see this. Averaging out wind over a large area does not help all that much.

ceejayoz 1y ago
Solar fluctuates too; there's not much at night. This largely means we have to build a bit more of each, and store some. The chances of an entire continent being devoid of wind and solar for an extended period becomes vanishingly small pretty fast.
- Animats 1y ago
  Here's the CAISO wind graph. This is the total wind energy from four large states. Note that the low point is 1/7 that of the peak, which is around noon.[1] Here's the PJM wind graph.[2] Low point is about 1/4 the peak, again, around local noon. It just doesn't "average out" across even a sizable country. [1] https://www.caiso.com/todays-outlook/supply https://www.caiso.com/todays-outlook/supply [2] https://dataviewer.pjm.com/dataviewer/pages/public/wind.jsf https://dataviewer.pjm.com/dataviewer/pages/public/wind.jsf
  - ceejayoz 1y ago
    Now click the demand view. It goes dramatically up and down on a daily pattern, too.
    - Animats 1y ago
      The demand curve and the wind curve are not synchronized in any way. Solar at least peaks with peak air conditioning load.
      - ceejayoz 1y ago
        If only we could store some energy for a while!
- bryanlarsen 1y ago
  There is a paper floating around showing that for both US+Canada and the continental EU there has never been a single hour where there has been no wind and no sun somewhere in a 30 year period.
  - Animats 1y ago
    > There is a paper floating around This needs a better cite.
    - lukan 1y ago
      I mean, would you believe it the other way around? Someone claiming, there was a day with no wind and no sun in whole north america in the last 30 years? I wouldn't believe that. But concrete data to have, is of course better than assuming ..

ceejayoz 1y ago

Solar fluctuates too; there's not much at night. This largely means we have to build a bit more of each, and store some. The chances of an entire continent being devoid of wind and solar for an extended period becomes vanishingly small pretty fast.

Animats 1y ago
Here's the CAISO wind graph. This is the total wind energy from four large states. Note that the low point is 1/7 that of the peak, which is around noon.[1] Here's the PJM wind graph.[2] Low point is about 1/4 the peak, again, around local noon. It just doesn't "average out" across even a sizable country. [1] https://www.caiso.com/todays-outlook/supply https://www.caiso.com/todays-outlook/supply [2] https://dataviewer.pjm.com/dataviewer/pages/public/wind.jsf https://dataviewer.pjm.com/dataviewer/pages/public/wind.jsf
- ceejayoz 1y ago
  Now click the demand view. It goes dramatically up and down on a daily pattern, too.
  - Animats 1y ago
    The demand curve and the wind curve are not synchronized in any way. Solar at least peaks with peak air conditioning load.
    - ceejayoz 1y ago
      If only we could store some energy for a while!
bryanlarsen 1y ago
There is a paper floating around showing that for both US+Canada and the continental EU there has never been a single hour where there has been no wind and no sun somewhere in a 30 year period.
- Animats 1y ago
  > There is a paper floating around This needs a better cite.
  - lukan 1y ago
    I mean, would you believe it the other way around? Someone claiming, there was a day with no wind and no sun in whole north america in the last 30 years? I wouldn't believe that. But concrete data to have, is of course better than assuming ..