3 ms·

Storage for 3 months https://www.cnbc.com/2021/09/29/sse-says-low-wind-dry-conditions-hit-renewable-energy-generation.html https://www.cnbc.com/2021/09/29/sse-

• cesarb 5y ago
  > Storage for 3 months The parent comment said overprovisioning and storage. With enough overprovisioning, you'd need storage for half a day at most (keep in mind that the parent thread was talking about pure solar with storage, not wind). The question on this sub-thread is: what would be the optimal (minimum cost) balance between overprovisioned solar and storage, and what would be the cost of that solution (the question was about 1GW, but it probably scales almost linearly), with similar reliability to pure nuclear (I'm assuming this pure nuclear scenario is overprovisioned too, since it has to deal with refueling pauses and the occasional electrical faults)? (Of course, except for very small isolated networks, a real-life solution would not use only pure solar and storage; adding other things like wind to the mix would probably decrease the cost while keeping the same reliability.)
  • sudosysgen 5y ago
    The issue with wind is that lulls in wind and solar are often correlated. In reality you'd need somewhere are 3x provisioning and a day of storage.
  • q1w2 5y ago
    This is not correct. In winter months, solar produces one tenth the power it does in summer - and even that is on average. One cloudy January, and people would live in the dark for a month.
    • sudosysgen 5y ago
      It's even worse. If we want a zero emissions future, we would want electric heating...