It’s still not earning you money to spend electricity because you still have to pay the transfer fee which is around 6 cents / kWh but it’s pretty damn cheap nevertheless, mostly because of the excess in wind energy.
Last winter because of a mistake it dropped down to negative 50 cents / kWh for few hours, averaging negative 20 cents for the entire day. People were literally earning money by spending electricity. Some were running electric heaters outside in the middle of the winter.
There are about 2 weeks without sun and wind in the whole EU every once in a while (don’t remember, like every 3 years?). How are 6 hours supposed to help? How much would these only 6 hours of storage capacity cost (pick some country, perhaps not Norway or Iceland).
I doubt that’s true. Especially no sun sounds highly dubious, I don’t think the Earth stops spinning every now and then. Oh, and do note that solar panels are still producing even in cloudy conditions.
There’s no period during which renewables stop producing. “6 hours” refers to the capacity if renewables stopped producing entirely, but in reality this never happens. At worst efficiency drops far enough to dip below demand, at which point the storage would have to kick in to make up the difference.
Building that much storage still costs a lot of money. I haven’t seen many cost estimates actually, probably because the market is developing at a very quick pace at the moment, driving costs down. A decent home battery solution costs 4000-10000 euros per household, but doing it at a larger scale may be cheaper.
Why would you even say something so stupid? I highly doubt that you are interested in a discussion.
But just in case, it is called “Dunkelflaute”. And no, we do not constantly produce so much more energy that losing a lot of capacity makes us “dip below demand”. We constantly only produce as much as we need. But why even discuss this here? People spend their whole career figuring this out, it is obviously not as simple as you make it out to be. Here a report from the EU. Just to show the scale of the project:
It is estimated that 20-30 giga-factories for battery cells production alone will have to be built in Europe
Why would you even say something so stupid? I highly doubt that you are interested in a discussion.
Please keep it civil. You provided very little context in your original argument, which made it very hard to give you a meaningful response.
Your link regarding Dunkelflaute helps to provide context, thanks for that. I had not heard of this phenomenon before. The research paper in the citations does mention that while it occurs somewhat regularly for an area e.g. the size of a country, it rarely happens simultaneously for say the EU-11 mentioned (most of northern Europe). The page also mentions importing power during these periods from other regions would mostly resolve this problem. Seems important to take into account, but not an impossible problem to deal with, especially given that it already happens and we already use inter-grid connections to handle it? What’s your perspective on this?
People spend their whole career figuring this out, it is obviously not as simple as you make it out to be.
I certainly don’t mean to pretend this is a simple problem by any means. Conceptually, sure, it’s “simple”, but bringing it to practice is much harder. It’s also why I’m perhaps more pessimistic about the timeframe in which we can execute these plans, particularly also because we need to scale up battery production by a factor of at least 10. It’s why I think we also need to invest in research regarding higher-capacity batteries made from easier to procure materials. Certainly a difficult endeavor by the way, but absolutely necessary. We’ve made promising progress on that front at least, but we’ve got a long way to go still.
In my opinion, focusing on renewables + storage has the highest long-term chance of success combined with manageable costs. If you’re willing to up the chance of success offset by incurring higher costs, adding nuclear to the mix is perfectly acceptable to me. But even longer-term (especially post net-zero) I think it’s almost inevitable that fission reactors will end up not economically competing with alternatives.
