You can use this website to get a graph:
http://www.bricklebrit.com/stromboerse_leipzig.html
You have to enter the date and so on. I have done it for the Jan 20 2021 to Jan 20 2022 range and obtained this deeplink:
http://www.bricklebrit.com/cgi-bin/spotmarktpreise.pl?VONDTE...
Indeed there has been a massive explosion at the wholesale markets for energy. Up to a 10 fold increase!
This challenge put a lot of smaller energy providers into a bad situation, especially those who would obtain most of their electricity through the exchanges instead of their own infrastructure or longer term contractual arrangements. They could only sell energy at the lower prices and had to buy at extremely high prices. So they mass terminated the contracts of their customers (otherwise they would probably have went bankrupt).
In Germany, this doesn't mean that people are without electricity though, as a so called "basic provider" kicks in, who is always the electricity provider with the most customers in a given area. Per regulation, that provider has to take you as customer if they want to or not. Of course these providers are in the same buying situation as the smaller ones, so have to buy the energy at those inflated prices. To get back those costs, they have often doubled or even tripled their end customer prices, but only for new customers, that is, those customers that got dumped on them by the smaller providers and those who were the cause of having to buy new electricity.
For the electric customers this led to a market split in two: first the customers who did not get dumped, still the vast majority of people. For them, there was barely an increase. Second the customers who did get dumped and now have to pay the extremely inflated prices. Some people claim this is unfair, but at the same time, the main reason for people to switch away from the basic provider is to use cheaper prices (outside of people who want to buy "green" energy), so it's not that unfair that it's these people have to shoulder the costs if the market is directed against their favour for a while.
https://www.t-online.de/finanzen/news/unternehmen-verbrauche...