Sweden Gov Announces 'Massive Expansion' of Nuclear Energy

Re:Sweden Gov Announces 'Massive Expansion' of Nuclear Energy by Jolter on Thursday November 16, 2023 @05:05PM (#38296246)

I don’t think solar is as bad as you think it is during winter. During a stationary high pressure, you’ll have clear skies. Solar cells are more efficient when cold, and in fact in warmer countries the heat of midday can make them so inefficient that solar panels generate the most power in the morning and late afternoon.

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Re:Sweden Gov Announces 'Massive Expansion' of Nuclear Energy by doikor on Thursday November 16, 2023 @05:35PM (#38296608)

It is bad due to the short days and low angle of the sun.

For example in Stockholm you get around 6h of daylight. Malmö (can’t really get further south than that) a bit over 7h.

Basically the northern most point of mainland US is a lot further south than the most southern place in Sweden. Thinking about how good solar panels are in the winter in Anchorage gives you some idea (which has slightly slightly shorter days then Stockholm at around 5h30min at their shortest)

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Re:Sweden Gov Announces 'Massive Expansion' of Nuclear Energy by jes5199 on Thursday November 16, 2023 @08:28PM (#38298099)

6 hours of daylight, then you need to over-provision the solar so you can charge 18 hours worth of batteries in that time. This is still cost competitive with nuclear

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Re:Sweden Gov Announces 'Massive Expansion' of Nuclear Energy by doikor on Friday November 17, 2023 @02:02AM (#38300441)

It is way worse than “6 hours of daylight” due to the lower angle of the sun.

I don’t know the numbers for southern Sweden but for Stockholm level you get maybe 5% to 10% of the production you get in the summer.

Here in Finland we have it even worse but I know where to find the numbers.

https://www.fingrid.fi/en/electricity-market-information/sol...

Basically if we are lucky we hit 5% of a typical summer summer day for an hour maybe two. As the days are less then half as long you end up with ~1% the production vs summer.

But in reverse the panels are really good during the summer as the days are very long. This is why people bother installing solar here.

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Re:Sweden Gov Announces 'Massive Expansion' of Nuclear Energy by qwqetyr on Friday November 17, 2023 @04:39AM (#38301385)

Is it really? Including the batteries?

And we're still ignoring the fact that many days you'll get barely any direct sunlight during those 6 hours of "daylight"

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