I really hope, this happens on a big scale and further reduces the dependency on fossil fuels (at least over 24h. winter is a different question)
There’s enough profit to make the payback period for a decent battery quite short.
For consumers, power prices consist of the actual price of power, plus network fees. Network fees are fixed at (on average) something like 10ct/kWh or 100€/MWh. So negative prices are only really negative if the power price drops below those -100€/MWh, which rarely happens (the usual dips are at low single-digit cents per kWh).
And even then, there is the issue of network fee double-dipping: Depending on the contract you have with your power company, the size and kind of storage you are operating, and the phase of the moon and your donations to the ruling party, you will be charged network fees twice, once when buying the power, once when selling it again. In that case, the threshold would be even worse, at -200€/MWh.
And all that doesn't factor in the cost of the storage infra.
Edit: And there is another factor: The current very low dip is in the intra-day prices. But contracts for consumers use day-ahead prices, which usually don't include those very large dips that result from miscalculations of weather and dispatch capacity.
Edit2: Just check https://tibber.com/de/preisrechner (use e.g. 10119 as Postleitzahl) and scroll down for the graph. Today, they give a negative day-ahead price of -1.5ct/kWh, but including network fees, taxes and their cut, you still end up paying 18.2ct/kWh...
Below -100€/MWh, you don't need to sell the power to profit; you'd make at least some money just using it to heat up a big resistor.
And even if there were negative end prices happening: There are metal smelting works and other operators of big resistors who will happily heat up even more. So prices will probably never get so negative that a normal consumer can ever profit from them.
The wholesale price system is not a reliable signal or incentive for electricity generation supply and demand in Europe. There are various subsidies, taxes, levies, and fixed costs not shown at the wholesale level that completely change calculations.
These numbers will make customers upset and complain about price gouging if they don't understand the disconnect. Or, it makes customers think that renewables are cheap because they are not seeing the subsidies that on net result in higher payments to renewable providers than carbon-based producers.
From JP Morgan's 16th Annual Energy Paper, March 2026
https://cdn.jpmorganfunds.com/content/dam/jpm-am-aem/global/...
> In 2024 we estimated that had Germany not decommissioned nuclear power after the Fukushima accident, it would have needed 50% less electricity generation from fossil fuels, 84% less generation from imported natural gas, 27% less fossil fuel capacity and 42% less natural gas capacity. Another road less traveled: Germany’s electricity prices in 2024 were almost 25% higher than they would have been had the country kept its nuclear power online . And as shown below, Germany might not have experienced such a sharp increase in its electricity imports which are 2x higher than a decade ago as a share of consumption.
> More nuclear shutdown repercussions: Germany’s industrial power prices were 3x higher than the US and China in 2024, and part of the reason why Germany has been experiencing the deindustrialization shown on the right.
From JP Morgan's 16th Annual Energy Paper, March 2026
https://cdn.jpmorganfunds.com/content/dam/jpm-am-aem/global/...
> In 2024 we estimated that had Germany not decommissioned nuclear power after the Fukushima accident, it would have needed 50% less electricity generation from fossil fuels, 84% less generation from imported natural gas, 27% less fossil fuel capacity and 42% less natural gas capacity. Another road less traveled: Germany’s electricity prices in 2024 were almost 25% higher than they would have been had the country kept its nuclear power online . And as shown below, Germany might not have experienced such a sharp increase in its electricity imports which are 2x higher than a decade ago as a share of consumption.
> More nuclear shutdown repercussions: Germany’s industrial power prices were 3x higher than the US and China in 2024, and part of the reason why Germany has been experiencing the deindustrialization shown on the right.
My apologies, that was poorly worded - I didn't mean to imply that all energy prices were low across the board. Of course they are not.
It's an interesting indicator, not (yet) a systemic change. And as I said in answer to the parent comment, it's a important subject right now because of the petrochemical price shock.
Nevertheless, if I were to interpret your statement as unilaterally as you interpreted mine: you said "negative prices are not low prices", which is wrong as a matter of arithmetic.