The expansion of renewable energies faces a challenge less visible than solar panels, but absolutely crucial: How to manage electricity when it is produced but not consumedThe sun does not always keep pace with grid demand, and without backup systems, some of that energy is wasted or causes strain on the electrical system.
In this context, industrial battery storage is gaining prominence, a technology that aspires to become a key component of the new electric model in Spain and EuropeThis is the setting for the first major hybrid solar energy storage project in the Valencian Community, an initiative that aims to demonstrate that photovoltaics can provide firm energy beyond daylight hours.
A pioneering 50 MWh project in Burriana
The Valencian company Endurance Motive, specializing in Battery Energy Storage Systems (BESS), has been awarded the contract to build what is considered the first major hybrid solar-powered energy storage project in the Valencian Community. The project will be carried out in Two 5 MW photovoltaic plants already operational in Burriana (Castellón), promoted by Corporate Solar Holding.
The project includes the installation of two 25 MWh storage systems each, up to a total capacity of 50 MWh. These systems will be directly integrated into the solar plants, allowing the energy generated during peak production hours to be stored and released in a controlled manner when the grid requires it.
The awarding process is structured through two supply and integration contracts which, in total, amount to 5,71 million euros. This sum is allocated to the main storage equipment, its associated electronics, and integration into existing photovoltaic installations.
From a territorial point of view, the project has a clear regional character: it is developed entirely within the Valencia and it relies on an industrial value chain based in the region, which strengthens the position of the Valencian business fabric in the energy storage sector.
BESS integration and key project technology
The core of the installation will consist of ten 5 MWh battery containers Each one, designed and manufactured by Endurance Motive. These containers make up the BESS systems that will be responsible for accumulating and releasing energy from photovoltaic plants, acting as a large electrical "lung" for the grid.
To transform and manage the stored energy, the project incorporates Power converters supplied by Power Electronics, another leading company based in the Valencian Community. These teams are responsible for adapting the electricity from the batteries to the requirements of the electrical grid and for coordinating the charging and discharging flows.
The operation of the entire system will rely on a Energy management system (EMS) developed by HesstecThis control software will determine when it is most convenient to store energy and when to release it, optimizing the use of solar generation and helping to smooth out demand peaks or potential imbalances in the grid.
Thanks to this combination of industrial batteries, power electronics and intelligent management, the installation will allow the solar energy does not depend exclusively on daylight hoursThe system will be able to inject electricity during periods of lower renewable production, improving the stability of supply and facilitating a greater share of renewables in the electricity mix.
European implementation and funding schedule
The work plan established by the participating companies states that the Delivery of the main equipment will take place between May and June 2026Following this logistics and assembly phase, the final integration of the storage systems into the solar plants and their commissioning are scheduled for July of the same year.
This project also has the unique characteristic of being the first in the region to be implemented under the umbrella of the European FEDER funds managed through IDAE and the Ministry for Ecological Transition (MITECO). According to its promoters, it is also the first hybrid plant to be awarded a FEDER IDAE grant in Spain in this specific area.
European aid is not limited to financing energy infrastructure; one of its objectives is to boost industry and employment in the national territoryTherefore, IDAE programs prioritize projects that strengthen the local value chain, a criterion that this development meets by bringing together manufacturers, integrators and suppliers based in the Valencian Community.
The Burriana project also stands as the first in a series of initiatives planned to be rolled out between 2026, 2027 and 2028 within this same aid framework. In total, ERDF funds allocated to energy storage amount to approximately €840 million, which opens the door to a significant pipeline of similar projects in Spain.
Role of Endurance Motive and Corporate Solar Holding
The operation consolidates Endurance Motive As one of the leading players in energy storage at the national level, it simultaneously assumes the role of battery manufacturer, integrator, and builder of BESS systems. This triple role is one of the requirements of the IDAE's subsidized programs, which seek to guarantee the technical and production capacity of the recipients.
The company, based in the Valencian Community, specializes in lithium batteries and stationary storage projectsIn addition to its activity in the energy sector, it operates in efficient mobility with solutions for industrial applications, the naval sector, and public and last-mile transportation. Its stationary storage division is responsible for undertaking industrial-scale projects such as the one in Burriana.
The president of the company, Ander MuelasHe highlighted the work of Corporate Solar Holding in developing a photovoltaic plant that is already among the first in Spain to incorporate energy storage. In his opinion, this project will serve as a benchmark for new hybrid systems that will be deployed in the coming years as renewable energy penetration in the grid increases.
From Corporate Solar Holding, its founder and CEO, Javier SaladichThe company underlines the importance of this action due to its pioneering nature and its contribution to the security of the electricity supply. The company emphasizes that the hybridization of solar and storage It will be a key tool to mitigate stressful situations on the network, such as the blackout suffered last year, by helping to stabilize frequencies and loads.
Impact on the grid and the energy transition
The storage system designed for the Burriana plants will allow modulate the injection of solar energy into the gridavoiding wasted energy when generation exceeds local demand and reducing fluctuations caused by the variability of renewable production.
In practice, the project aims to function as a “backbone” supporting the electrical systemThis contributes to advancing the energy transition without compromising the stability of supply. By being able to shift some solar generation to other times of day, photovoltaic energy can gain a larger share of the energy mix without causing imbalances.
BESS battery storage is thus presented as one of the most immediate solutions for integrate a greater volume of renewables in Spain and across Europe. Compared to other backup alternatives, battery systems stand out for their speed of response and their ability to act almost instantaneously in response to variations in demand or grid incidents.
The Burriana project fits perfectly into this logic, demonstrating how an already operational solar plant can evolve towards a hybrid model that provides not only clean energy, but also flexibility and stability services to the electricity system. This approach aims to become the standard as the share of renewables increases in the coming years.
Growth prospects and European context
For Endurance Motive, the contract signed with Corporate Solar Holding represents a turning point in his career as a company listed on the BME Growth. The firm started 2026 with an order book of 100 MWh for the first half of the year and expects to double that capacity in the second half, driven by growing interest in storage projects.
With the aim of supporting this growth, the company announced the issuance of convertible bonds for up to 3 million eurosThese funds are intended to strengthen its industrial capacity. According to company officials, this operation will allow them to increase production to around 1.500 MWh annually, a figure aligned with the demand for batteries manufactured in Europe expected within the framework of energy transition programs.
The development of the Burriana project inaugurates a series of contracts that will be awarded between 2026 and 2028 within the framework of IDAE aid, aimed at boosting storage solutions with local manufacturing and designIn this scenario, Endurance Motive positions itself as one of the few companies capable of acting simultaneously as a manufacturer and integrator, a key requirement to access these calls for proposals.
The company's strong stock market performance in recent years, with significant increases in share price, has reinforced market confidence in its business model. However, consolidating its position in the sector will depend largely on the ability to successfully execute flagship projects such as the one in Burriana and its adaptation to the growing demand for BESS solutions in Spain and Europe.
With the launch of the first major hybrid solar energy storage project in the Valencian Community, Burriana is positioning itself as a real-world testing ground for the mass integration of renewables into the electricity system. The combination of BESS technology, European funding, and a predominantly Valencian value chain demonstrates how The energy transition can go hand in hand with local industrial development, while strengthening the stability of the grid and paving the way for new solar hybridizations throughout the territory.