In a strategic move that reinforces its position as a key player in the energy transition, Hybrid Energy Store Solutions (HESSTEC) announces the entry into its shareholding of three international leaders: Suma Capital, through SC Net Zero Ventures, an investment fund specialized in sustainability scale-ups; ABB, the Swiss multinational and a reference in electrification and automation; and VERBUND X Ventures, the corporate venture capital unit of Austria’s leading energy supplier VERBUND. This operation, including a €12 million capital increase, positions HESSTEC as a European benchmark in advanced energy storage solutions.
This operation will allow the company to strengthen its industrial and technological capacity with the launch of its own production line for intelligent control systems, and the megawatt-scale expansion of its renowned electrical network laboratory, the Advanced Grid Lab — a unique experimental environment in Europe for validating storage solutions in both real and simulated grid scenarios.
The company’s equity is reinforced by the addition of partners with long-term industrial, technological, and financial vision. At the same time, the continued presence of two key shareholders is confirmed: Elewit, the technology platform of the Redeia, and international developer RIC Energy. This ensures a top-tier diversified cap table, strategic coherence, project stability, and a firm focus on applied innovation.
Critical technology for a secure, flexible, and decarbonized electrical system
This operation takes place in a particularly sensitive context for the European electrical grid. Recent tensions in the system — marked by generation-demand imbalances and high renewable penetration — have highlighted the urgent need for technologies that bring flexibility, resilience, and intelligent control.
HESSTEC’s differentiated proposal is based on two key elements. First, hybrid energy storage systems that integrate batteries of various chemistries, supercapacitors, and other technologies to offer a full range of grid services (frequency regulation, backup, peak shaving, seasonal storage). Second, its INMS (Intelligent Network Management System), an advanced control platform that optimizes real-time operation, maintenance, and profitability of storage systems.
In recent years, HESSTEC has validated these technologies in the field, successfully deploying solutions in numerous projects across the Spanish market. Its operational experience, commercial capabilities, and technical approach have consolidated its leadership in hybrid storage and advanced grid services.
International push with a European focus
The entry of Suma Capital, ABB, and VERBUND X Ventures marks the beginning of a new phase of international expansion, with Europe as the immediate growth focus. At the same time, the company is preparing to enter key markets such as North America, Latin America, and the Middle East, where the large-scale integration of renewables demands intelligent storage solutions.
HESSTEC will maintain its focus on technological excellence and customer proximity, consolidating its position in the Utility Scale sector and deploying modular solutions for the commercial and industrial (C&I) segment.
Eugenio Domínguez Amarillo, CEO of HESSTEC, states:
“This operation represents a qualitative leap in our roadmap. We are combining technology, industrial vision, and capital committed to sustainability to accelerate the deployment of solutions that will enable a stronger, more resilient, and fully decarbonized grid. Moreover, we are enhancing our industrial capacity with a proprietary manufacturing plant and a one-of-a-kind megawatt-scale grid laboratory in Europe.”
Natalia Ruiz, Partner at Suma Capital, says:
“At Suma Capital, through our SC Net Zero Ventures fund, we are firmly committed to companies that drive a real energy transition, with cutting-edge technology and industrial vision. HESSTEC’s value proposition embodies this philosophy, offering a unique hybrid storage and grid intelligence platform that responds to the most critical challenges of electrical system decarbonization. We are confident in its scalability and technological strength to generate transformative impact across European and global markets. We are proud to support HESSTEC in this new stage of growth.”
Lee Todd, Head of Sustainability at ABB ELSE and newly appointed to HESSTEC’s board of directors, states:
“This investment strengthens our innovation ecosystem and expands our capabilities in storage and digitalization. HESSTEC offers a disruptive proposition: enabling industries to optimize their energy consumption with smart, accessible, and scalable hybrid solutions. This is a key step in our vision of clean, safe, and efficient electrification.”
Franz Zöchbauer, Director of VERBUND X Ventures, adds:
“Energy storage is the backbone of a power system based on renewables. With this alliance, we reinforce our commitment to solutions that enhance flexibility, security, and system sustainability.”
Vision for the future: storage as a driver of a just transition
This investment round marks the beginning of a new stage of international expansion. HESSTEC will initially focus its efforts on consolidating its leadership in Europe, expanding into key markets such as Germany, France, Italy, and the Nordic countries. At the same time, it is preparing to enter strategic regions like North America, Latin America, and the Middle East, where the demand for advanced storage solutions is increasing due to the pressure of integrating renewables into complex power systems.
This growth will be structured around a dual market strategy:
HESSTEC’s value proposition goes beyond technology. The company promotes a more democratic, resilient, and sustainable energy model, enabling industries, cities, and communities to take control of their energy use and actively participate in the transition to a net-zero system.
HESSTEC provides turnkey solutions tailored to each client, integrating design, engineering, installation, operation, and maintenance of systems. Its collaborative approach, based on strategic partnerships, enables rapid implementation in demanding and highly regulated environments, making it a strategic partner for both utilities and large consumers, aligned with climate neutrality, energy efficiency, and supply security goals.
With this new backing, HESSTEC reaffirms its commitment to lead the new era of energy storage, building a cleaner, more flexible, and smarter grid for future generations.
According to Eugenio Domínguez Amarillo:
“We aim to be the strategic partner of those leading the energy transition. We offer proven technology, industrial capacity, and a highly specialized team. With this round, we strengthen our roadmap to build, alongside our partners, a cleaner, more flexible, and smarter power grid for future generations.”
