Key Points:
- Energy companies will increase the number of combined renewable power and battery storage sites by 450% by the year 2030.
- Solar projects paired directly with large battery systems accounted for more than 60% of all new installations in 2025.
- Spain, the Netherlands, and Germany each suffered through more than 500 hours of negative electricity prices last year.
- Experts predict that wasted clean energy will jump from 10 terawatt-hours in 2024 to roughly 33 terawatt-hours by 2030.
Aurora Energy Research released a new report on Monday detailing a massive shift in the European energy sector. The research firm expects combined renewable power and battery capacity across Europe to surge more than 450% by the year 2030. This explosive growth highlights a major change in how energy companies plan, fund, and build clean power stations today. They no longer want to rely solely on the weather to dictate their profits.
Energy developers increasingly build wind and solar farms directly alongside giant battery storage systems. Industry insiders call these combined sites co-located projects. These dual systems allow power generators to store excess electricity on extremely sunny or windy days. Without massive batteries on site, these companies often have to sell their excess power at a massive financial loss just to get rid of it. By storing power in batteries, generators can simply wait and discharge electricity later when market prices recover to profitable levels.
The European energy market hit a very strange and painful milestone in 2025. Across the entire continent, negative price hours surged dramatically. During a negative price hour, power companies actually have to pay consumers or the grid operators to take their electricity. This happens because the system holds far too much supply and not enough demand. Spain, the Netherlands, and Germany each recorded more than 500 hours of negative prices last year, destroying profit margins for solar and wind farm owners.
To fight these severe financial losses, power companies rushed to install heavy batteries next to their generators. Europe officially reached 6.3 gigawatts of co-located renewable capacity in 2025. Solar power paired directly with battery storage led this massive infrastructure buildout. In fact, solar-plus-storage projects made up more than 60% of all new combined deployments last year.
The energy industry will not slow the pace of construction anytime soon. The Aurora Energy Research report predicts this co-located capacity will grow from the current 6.3 gigawatts to approximately 35 gigawatts by 2030. Energy executives realize they simply cannot survive the changing market dynamics without massive battery backups. Batteries serve as the ultimate financial shield against wildly swinging daily power prices.
Grid operators face another major problem called curtailment. When wind and solar farms produce more electricity than the local power grid can safely handle, grid managers force the power plants to shut down or reduce their output. This emergency process protects the delicate power lines from overloading and breaking down. However, curtailment completely wastes perfectly good, clean energy that the turbines and panels have already generated.
Experts forecast that energy curtailment will rise sharply over the next few years as countries build more solar panels and wind turbines. The report notes that European grid operators curtailed over 10 terawatt-hours of clean power in 2024. Analysts expect the wasted energy figure to skyrocket to around 33 terawatt-hours by 2030. Adding batteries directly to power plants provides the perfect solution to capture and store this otherwise wasted energy for nighttime use.
The research report ranked Germany as the most attractive country in Europe for building these new combined energy projects. Germany offers energy developers the highest expected financial returns on their investments. Strong government support and a massive industrial base hungry for reliable electricity make the German market highly profitable. Germany also needs massive batteries to replace the steady power it lost when it shut down its nuclear plants and stopped buying Russian gas.
Britain took the second spot on the investment ranking list. The island nation is building massive offshore wind farms, but wind output constantly fluctuates. This makes local battery storage incredibly valuable to stabilize the national system when the wind suddenly stops blowing. Bulgaria secured the third position on the list, surprising some industry watchers. Bulgaria offers developers cheap land, easy permit processes, and a rapidly growing appetite for modern clean energy solutions.
Researchers also flagged three specific markets for investors to watch closely over the coming months. Spain, Hungary, and France all plan to overhaul their local energy rules. Spain has abundant solar resources but desperately needs batteries to shift that daytime power to evening peak hours. France relies heavily on nuclear power but wants to integrate more renewables safely. These ongoing regulatory reforms could soon make it much easier and more profitable for companies to build combined solar-and-battery sites within those borders.
The comprehensive report analyzed data across the 20 main power markets in Europe. The final findings paint a very clear picture of the near future. As Europe pushes aggressively to close its dirty coal and gas plants, the continent will rely almost entirely on wind and solar power. To make that green transition work without causing daily blackouts, developers must pair almost every new solar panel and wind turbine with a giant battery system.
