Hacker News new | ask | show | jobs
by k8wk1 1156 days ago
Also, the reason this is only possible at all is that Germany uses the rest of Europe as a giant battery to manage the non-dispatchability of renewables. The import-export balance often changes by as much as one third of Germany consumption in 12 hours [1].

The electricity prices are also becoming zero[2] in Germany during parts of the day, which is a great outcome only on the surface. As this progresses, the consequence will be that renewable electricity producers aren't getting paid during their prime generating hours. This means even more subsidies will be required going forward to bring additional production. It will become more apparent once the reserve of easily dispatchable electricity sources is fully tapped to balance renewables across Europe. We will see very high prices during mornings and evenings and whenever it's cold and dark. The fossil fuel plants that are turned on during these periods will need to earn enough to address the additional wear due to quick power cycling and to keep being maintained for the rest of the time when they are unused.

[1] - https://www.smard.de/page/en/marktdaten/78?marketDataAttribu...

[2] - https://www.nordpoolgroup.com/en/Market-data1/Dayahead/Area-...

2 comments

The grid is for trade, so I am not sure what sense this complaint makes. Also France relies on imports sometimes. Electricity prices changing with production and demand is also exactly what market is for. As long as the market is working, this is beneficial to buyer and seller and changing prices are signals that allow the market to optimize production and consumption. Even when the price becomes zero sometimes, that does not mean than renewables need more subsidies if they earn money at other times where the price is higher. Also Germany still has enough of conventional generation capacity to ramp up production if needed, so the "is possible at all because" comment is wrong. If there is trade, then because this is cheaper overall (and in general this helps buyer and seller).
> As long as the market is working, this is beneficial to buyer and seller and changing prices are signals that allow the market to optimize production and consumption.

The market will always look to extract the highest possible price from the consumer.

> If there is trade, then because this is cheaper overall (and in general this helps buyer and seller).

Strange how "cheaper overall" fantasy is "consumer energy prices have quintupled in the past few years" in reality

> dispatchable electricity sources is fully tapped to balance renewables across Europe. We will see very high prices during mornings and evenings and whenever it's cold and dark

It's already a problem in Sweden. It exports electricity to Germany when demand is high... which leaves nothing to Sweden, and the prices skyrocket. https://www.bloomberg.com/news/articles/2022-08-12/swedish-m...

The prices in summer were so high mainly because half of France nuclear plants were offline. Look, even the article you cite mentions this: "The largest Nordic nation became the region’s top exporter in the first half after France suffered problems at its aging reactors"