Many arguments call countries’ names, but actually prices are dictated by companies (directly or indirectly by their behavior) that want to make a profit. Sweden’s electricity prices, as a rule of thumb, are always lower than prices in Germany, so from an economic p.o.v. it makes sense to buy as much electricity in Sweden as can be transported south. Of course, that drives prices up in Sweden to historic level (but still cheaper than in Germany). Why are prices so high in Germany? Several reasons have been discussed here, but one I would like to highlight is that operators of gas and coal power plants, which are meant as reserves in cases of high demand and low supply, do not produce sufficiently much electricity: they simply earn more by selling little electricity at high prices than by selling more electricity at lower prices. The politicians’ fault is that they have created a mostly unregulated market where under the right conditions some actors can make huge profits at the cost of everyone else. This is why more nuclear power plants won’t help: even their operators will have to pay back the huge debts left from construction and thus also will try to maximize profits from high prices via low supply.