AleaSoft Energy Forecasting, May 9, 2025. Energy storage is no longer a promise of the future but a strategic pillar of the present. The 2025 edition of Intersolar Europe has confirmed that batteries ‑both in stand‑alone and hybrid systems‑ are positioned as the key structural element for integrating renewable energies, ensuring security of supply and accelerating energy independence.
Batteries at Intersolar Europe 2025
Between May 6 and 7, AleaSoft Energy Forecasting had the opportunity to attend Intersolar Europe 2025, held in Munich. This event is undoubtedly the world’s leading showcase for the solar photovoltaic sector. Year after year, it marks the pulse of technological and commercial progress in renewable energies. And at this year’s event, one thing became clearer than ever: energy storage is no longer a promise, it is a key reality in the process of decarbonisation and energy independence.
The prominent presence of storage solutions ‑from stand‑alone batteries to hybrid systems that combine photovoltaic energy and batteries‑ is evidence of the paradigm shift in the sector. What was once a complementary element has become the structural component that will enable the massive integration of renewable energies into electricity systems.
The keys of the storage prominence
AleaSoft Energy Forecasting has been observing this evolution for some time. A monthly webinar on energy markets has been organised since December 2019 and, since October 2024, storage has taken on a special role. AleaSoft Energy Forecasting’s vision, expressed since then, is clear: the five‑year period 2025‑2029 will be defined by the drive of storage systems as the decisive factor for the energy transition.
This change has been driven by several key factors. One of the most relevant is the significant drop in battery prices. This technological and market evolution has allowed projects that were economically unfeasible just a few years ago to become a feasible and attractive reality for investors and developers.
Another determining factor is the increase in hourly spreads, that is, the difference between maximum and minimum prices. This growing volatility in electricity prices allows increasing profitability for business models based on price arbitrage: buying energy at times of low prices and selling it when prices rise.
In addition, capacity payments in Spain are expected to start being implemented this year. This mechanism, designed to guarantee the security of electricity supply, will provide an additional source of revenue for storage projects, reinforcing their economic viability and their role in the energy transition.
Also, revenues from participation in ancillary services are gaining importance. As batteries become more fully integrated into these markets, they will be able to access new revenue opportunities that reward their flexibility and rapid responsiveness.
The winning formula: solar energy and batteries
Hybrid technology, which combines solar photovoltaic energy plants with batteries, is emerging as the winning formula for the immediate future. This combination not only allows for greater efficiency in the use of infrastructure and grid connection, but it also offers an increasingly competitive investment cost.
Storage is not only essential to harness all the renewable energy generated. It is also a strategic tool for achieving energy independence, improving the security of the electricity system and moving decisively towards a sustainable, reliable and economically viable model.
We are at a historic moment. And everything points to storage being the cornerstone of the new energy system.
AleaSoft Energy Forecasting’s analysis on energy storage
AleaSoft Energy Forecasting, through its AleaStorage division, develops advanced solutions to maximise the profitability and efficiency of systems with energy storage. The company provides reports and specialised forecasts that enable sector players to make strategic decisions. Services include profitability and revenue calculation, optimal battery sizing in hybrid systems and customised analyses for different business models. The offer covers a wide variety of configurations: from stand‑alone batteries to hybrid systems combining wind energy, solar photovoltaic energy or both with storage, as well as self‑consumption projects with batteries and other combinations such as hydraulics, reversible pumping or cogeneration.
Source: AleaSoft Energy Forecasting.
