AleaSoft Energy Forecasting, November 21, 2025. The role of energy storage and the growing need for flexibility in an electricity system with a high share of renewable energy were the central themes of the 60th edition of the AleaSoft Energy Forecasting webinars. The session analysed trends in the European electricity market ahead of winter 2025‑2026, the impact of intraday variability on prices and the increasingly strategic importance of batteries and hybridisation for the stability and efficiency of the system.
The 60th edition of the monthly webinar series organised by AleaSoft Energy Forecasting took place on November 13. This series has become a key platform for analysing developments in the energy sector and the evolution of the market. On this occasion, the event in Spanish featured the participation of Luis Marquina de Soto, President of AEPIBAL, and Oriol Saltó i Bauzà, Associate Partner at AleaSoft. The webinar and the analysis session in Spanish were moderated by Antonio Delgado Rigal, CEO of AleaSoft, who led the discussion on the progress of storage, regulatory challenges and operational issues in a European context marked by unprecedented structural changes.
The evolution of European markets points to a growing need for flexibility
In the first part of the webinar, Oriol Saltó reviewed recent developments in European electricity markets. The session examined the behaviour of the day‑ahead market and the prices captured by renewable energy technologies, highlighting the intensification of low‑price hours observed in 2024 and 2025. This trend reinforces the importance of mechanisms capable of shifting energy between hourly periods and providing flexibility in scenarios characterised by high intraday variability.
It was also highlighted that flexibility is beginning to play a structural role in the functioning of European electricity markets. The combination of higher solar and wind energy penetration with demand that is more sensitive to economic and climatic factors is increasing the frequency of sharp intraday fluctuations. In this context, the need for solutions that facilitate the management of these changes and enable the market to adapt more quickly to short‑term oscillations was emphasised.
Storage and flexibility management as the backbone of the new electricity system
Luis Marquina’s contribution focused on explaining the structural transformation taking place in the electricity system as a result of the increasing penetration of renewable energy. He highlighted that the volume of new installed capacity is profoundly changing the operation of the system and that flexibility will become a critical element in the coming years. This flexibility should include both large‑scale resources and distributed solutions linked to self‑consumption, demand‑side management, electric mobility and storage at different levels.
The session underscored that the integration of all these elements will require a modernised operational framework for the electricity system and stressed the need for resources capable of absorbing excess generation, managing imbalances and providing stability. Storage therefore emerges as an essential tool for maintaining system quality, security and efficiency as the share of renewable energy increases.
The strategic role of batteries also extends to the economic sphere, as they allow the value of solar and wind energy to be maximised and the operation of hybrid projects to be optimised. In this regard, AleaSoft’s AleaStorage division has worked on real cases of stand‑alone projects, hybrid configurations with solar or wind energy, and even developments combining solar energy, wind energy and batteries. The services provided include estimating the optimal battery size in hybrid projects, long‑term revenue forecasts, revenue scenarios linked to capacity markets, CAPEX and OPEX analysis and financial modelling for projects in Europe and other international markets.
During the session it was stressed that the electricity system of the future will need to coordinate large renewable energy plants with millions of small distributed energy assets. This combination increases operational complexity and requires greater observability, monitoring and control. Flexibility therefore becomes the element that will keep the system in balance in a context where oscillations are more frequent and where the aggregated response of demand, self‑consumption and storage play an increasingly important role.
System resilience and deployment challenges
During the analysis session, Antonio Delgado Rigal stressed that the recent episodes of stress in the operation of the electricity system in Europe highlight the need to reinforce system resilience. The combination of high renewable energy production, variable electricity demand and an increasingly complex mix requires infrastructures capable of responding quickly and delivering services that guarantee stability. In this context, storage stands out as one of the technologies with the greatest capacity to provide the flexibility required by the system.
The webinar also addressed the challenges for storage deployment, such as the need to improve permitting processes, clarify the regulatory framework and provide market signals that facilitate project financing. The speakers agreed that effective storage development will reduce curtailments, make better use of renewable energy generation and improve system stability.
It was also noted that the shift towards a more distributed electricity system adds new challenges for the system operator, who will need advanced tools to monitor a growing number of energy resources connected at different grid levels. The ability of storage to act as a buffer against sudden fluctuations and its role in the local management of energy position it as a key element in building a more resilient system prepared for more demanding operational scenarios.
A decisive period for the consolidation of storage
The session concluded with a shared view regarding the central role storage will play in the energy transition over the coming years. Oriol Saltó emphasised that flexibility will be essential to stabilise prices and to manage renewable energy production efficiently. Luis Marquina highlighted that storage should now be regarded as a structural component of the electricity system. Antonio Delgado Rigal closed the event by noting that AleaSoft’s forecasting models increasingly integrate the presence of storage and that the period 2025‑2030 will be decisive for its consolidation in the European electricity system.
The speakers agreed that the integration of storage will allow the system to face more effectively the foreseen increase in renewable energy generation and the evolution of consumption patterns linked to electrification. This technology is emerging as a key enabler for a more digitalised and participatory system, in which consumers, distributed demand and smart energy resources will play an increasingly active role in maintaining system stability.
Talent, rigorous analysis and long‑term vision: essential factors for the consolidation of storage
The accelerating deployment of storage in Europe has highlighted a key need: analysis that integrates the complexity of the electricity system with reliable forecasts across all time horizons. In a context marked by intraday variability, electrification and regulatory pressure, battery projects require sophisticated assessment tools and teams capable of interpreting an increasingly dynamic operational environment.
In this scenario, solutions rely not only on technology or regulation, but on the ability to anticipate the factors that determine project profitability and behaviour. Increasingly, sector stakeholders prioritise models based on robust inputs for prices, spreads, renewable energy production and balancing services, enabling decisions to be taken with strategic vision. This is where forecasts produced using proven methodologies and teams with research profiles make the difference.
It is now increasingly common for strategic storage and hybridisation projects to rely on analyses developed by specialists with extensive experience in forecasting and modelling energy markets. The sector recognises the competitive advantage of having teams with high technical expertise. At AleaSoft Energy Forecasting, almost half of the staff hold PhDs or research backgrounds, bringing scientific perspective to the decision‑making process.
Throughout the integration of renewable energy technologies and now with the introduction of storage, the knowledge accumulated in earlier stages has proved essential. The experience gained from the first conventional generation developments, and later with the expansion of wind and solar photovoltaic energy, has made it possible to apply coherent criteria to today’s energy systems, which are more interconnected, distributed and dependent on flexibility.
The progress of storage requires not only technological insight but also sound analysis, the ability to interpret historical data and coherent long‑term forecasts. At a time when projects face greater uncertainty and more complex revenue structures, studies prepared from a technical perspective, supported by established statistical models and a proven track record, have become a critical element for success.
The sector is evolving towards an energy model based on data, forecasting and adaptability. Organisations such as AleaSoft Energy Forecasting, which combine expert teams, scientific methodologies and long‑term vision, are driving energy storage business models with the greatest guarantees.
AleaSoft Energy Forecasting’s analysis of the first year of the five‑year period of batteries and energy transition prospects
On December 4, 2025, AleaSoft Energy Forecasting will hold the 61st webinar of its monthly series. The session will be dedicated to reviewing the first year of the so‑called five‑year period of batteries and examining the prospects for the coming years in a context marked by very slow electricity demand growth and higher renewable energy penetration, which increases the need for flexibility and more efficient system management. The event will also address the main strategic vectors shaping the evolution of the European electricity system, including the role of renewable energy, demand, grids and energy storage.
The webinar in Spanish will feature experts from EY, Deloitte and PwC, who will share their views on the progress made over the past year and the challenges that will accompany the deployment of storage, as well as the regulatory, financial and operational implications associated with this new stage of the energy transition. Representatives from AleaSoft Energy Forecasting will also participate, providing market forecast analysis and the experience gained from studying the evolution of the European electricity system. Antonio Delgado Rigal, CEO of AleaSoft, will moderate the session.
The session will also explore the evolution of business models associated with storage, in a context where flexibility is emerging as a central factor for renewable energy integration. Analysts and consultancies agree that the coming years will be shaped by the need to develop infrastructures capable of responding to greater system variability and of making more efficient use of distributed resources. The debate will offer a broad view of the trends guiding storage deployment and its role in the new European energy framework.
Source: AleaSoft Energy Forecasting.
