1,173 Energy companies in Spain, in one picture: who is hiring, who is raising money, who founded them, where they are based, what the news is about, which skills employers want and where the research is going. Updated August 2026.
1,173companies tracked
$8.8Bdisclosed funding
59hiring right now
877events · 24 months
≥188,113news articles · 12 months
Who leads Energy in Spain
Tracks 1,173 Spanish energy firms, highlighting which are currently hiring, the most funded, and those receiving the most media coverage.
IPOThe Asturian engineering company TSK, based in Gijón, has already obtained the support of several investors that will cover at least 40% of the public offer of share subscription (OPS) that the company will make as a pre-pass for its departure to the Stock Exchange, scheduled for the middle of the next month of May.2026-04-29
FundingMatrix Renewables, a renewable energy developer and independent power producer focused on solar and battery energy storage systems, has secured £245 million (~$332 million) in non-recourse financing.2026-04-29
M&AIn 2024, the utility completed the sale of a 55% stake in its Mexican energy assets to Mexico Infrastructure Partners for $6 billion, following an agreement announced in February 2023.2026-04-28
M&ASpanish gas grid operator Enagas said on Tuesday it had reached an agreement with Singapore sovereign wealth fund GIC to buy its 31.5% stake in French gas grid operator Terega for 573 million euros ($674.65 million).2026-04-22
M&Athe Spanish manager of the gas system has announced the sale of 40% of Enagás Renovable to Hy24 (an investment fund of Ardian) for an amount of 48 million euros, although it will retain 20% of the subsidiary.2026-04-21
FundingThe HoldCo financing was closed with Nomura, acting as mandated lead arranger and underwriter.2026-04-20
FundingBasquevolt, a Spanish company specializing in next-generation solid-state battery technology, has announced the entry of Axon Partners Group, through its ClimateTech investment strategy supported by Ventures EPM, into its shareholding structure as an investor, together with complementary public funding through a CDTI (Centre for the Development of Technology and Innovation) with its SICC Innvierte match‑funding scheme.2026-04-20
Fundingdeveloper Solarig announced plans to invest more than €300m ($354m) into developing at least 20 biomethane plants in the country by 2030.2026-04-15
M&ALast March, along with partners, it struck a deal with Siemens Gamesa, the wind power subsidiary of Siemens Energy, to buy a majority stake in its onshore wind turbine generator manufacturing business in India and Sri Lanka for $550 million2026-04-06
M&AOther interested parties in the 51% stake include BP, Repsol, and Chevron.2026-04-03
Mergers and acquisitions
Deals from the last 24 months where a Energy company in Spain was the buyer or the one bought, newest first. “Undisclosed” means the price was never published — not that the deal was worth nothing.
Bruce Dunn · Patrice Simon · Jean‐Marie Tarascon · Yury Gogotsi · Yang‐Kook Sun · Haresh Kamath · Arumugam Manthiram · Yi Cui
The most-cited breakthroughs
Supercapacitor Devices Based on Graphene Materials · 3k cites
Graphene Anchored with Co<sub>3</sub>O<sub>4</sub> Nanoparticles as Anode of Lithium Ion Batteries with Enhanced Reversible Capacity and Cyclic Perfor · 2k cites
Challenges and Prospects of Lithium–Sulfur Batteries · 2k cites
Nitrogen-doped mesoporous carbon of extraordinary capacitance for electrochemical energy storage · 2k cites
Electrochemical Na Insertion and Solid Electrolyte Interphase for Hard‐Carbon Electrodes and Application to Na‐Ion Batteries · 2k cites
Common problems researchers identify3,636 papers · 7 recurring themes
Problems · theme 01
Energy Storage System Challenges
738 papers · 20.3% of this block
▲ +30% share2022→2025 share of research on this subject
Researchers discuss barriers and impacts of various storage technologies for future power grids.
Energy storage · Renewable energy · Environmental economics · Energy
“Comparative Review of Energy Storage Systems, Their Roles, and Impacts on Future Power Systems”
738 of these papers raise it as a problem
Problems · theme 02
Battery Electrode Material Issues
617 papers · 17.0% of this block
▲ +4% share2022→2025 share of research on this subject
Papers highlight difficulties in developing reliable anode and cathode materials for rechargeable batteries.
Anode · Cathode · Energy storage · Battery
“Developing Cathode Materials for Aqueous Zinc Ion Batteries: Challenges and Practical Prospects”
617 of these papers raise it as a problem
Problems · theme 03
Lithium and Flow Battery Limits
557 papers · 15.3% of this block
▲ +36% share2022→2025 share of research on this subject
Studies examine performance ceilings and safety concerns of lithium‑ion and flow battery technologies.
Battery · Energy storage · Lithium · Flow battery
“Electrical energy storage for transportation—approaching the limits of, and going beyond, lithium-ion batteries”
557 of these papers raise it as a problem
Problems · theme 04
Electrolyte Design Obstacles
442 papers · 12.2% of this block
→ +0% share2022→2025 share of research on this subject
Works focus on interfacial stability and conductivity problems in high‑energy electrolytes.
Electrolyte · Fast ion conductor · Lithium · Electrochemistry
“Electrolyte-Additive-Driven Interfacial Engineering for High-Capacity Electrodes in Lithium-Ion Batteries: Promise and Challenges”
442 of these papers raise it as a problem
Problems · theme 05
Renewable‑Grid Integration Hurdles
436 papers · 12.0% of this block
▲ +36% share2022→2025 share of research on this subject
Analyses address technical and operational challenges of coupling renewables with electric power systems.
Renewable energy · Photovoltaic system · Grid · Electricity
“A Review of Hybrid Renewable/Alternative Energy Systems for Electric Power Generation: Configurations, Control, and Applications”
436 of these papers raise it as a problem
Problems · theme 06
Supercapacitor Material Constraints
431 papers · 11.9% of this block
▼ -26% share2022→2025 share of research on this subject
Research points to scalability and performance limits of nanostructured supercapacitor components.
Supercapacitor · Nanotechnology · Energy storage · Electrochemical energy storage
“Flexible and Stretchable Energy Storage: Recent Advances and Future Perspectives”
431 of these papers raise it as a problem
Problems · theme 07
Hydrogen Storage Difficulties
415 papers · 11.4% of this block
▲ +13% share2022→2025 share of research on this subject
Literature surveys technical and economic barriers to widespread hydrogen storage adoption.
Hydrogen storage · Hydrogen · Thermal energy storage · Energy storage
“Hydrogen Storage Technologies for Future Energy Systems”
415 of these papers raise it as a problem
Cautions1,184 papers · 7 recurring themes
Cautions · theme 01
Economic Viability of Storage
261 papers · 22.0% of this block
▲ +29% share2022→2025 share of research on this subject
Authors caution that cost‑benefit analyses often reveal limited financial returns for storage projects.
Energy storage · Renewable energy · Environmental economics · Electricity
“Development of Energy Storage Systems for Power Network Reliability: A Review”
261 of these papers raise it as a problem
Cautions · theme 02
Grid Stability with Renewables
216 papers · 18.2% of this block
▲ +36% share2022→2025 share of research on this subject
Studies warn of potential instability and reliability issues when integrating variable renewable sources.
Renewable energy · Photovoltaic system · Grid · Electricity
“Impacts of Renewable Energy Integration on Power System Stability”
216 of these papers raise it as a problem
Cautions · theme 03
Thermal Storage Material Risks
201 papers · 17.0% of this block
▲ +33% share2022→2025 share of research on this subject
Papers highlight durability and safety concerns of latent‑heat and sorption thermal storage materials.
Thermal energy storage · Energy storage · Thermal · Latent heat
“Sorption heat storage for long-term low-temperature applications: A review on the advancements at material and prototype scale”
201 of these papers raise it as a problem
Cautions · theme 04
Alternative Battery Chemistry Concerns
182 papers · 15.4% of this block
▲ +4% share2022→2025 share of research on this subject
Research raises questions about safety, lifespan, and scalability of non‑lithium battery chemistries.
Anode · Cathode · Electrolyte · Lithium
“Electrode Materials for Rechargeable Sodium‐Ion Batteries: Potential Alternatives to Current Lithium‐Ion Batteries”
182 of these papers raise it as a problem
Cautions · theme 05
Nanostructured Supercapacitor Safety
142 papers · 12.0% of this block
▼ -9% share2022→2025 share of research on this subject
Works point out electrochemical and mechanical reliability issues in emerging nanomaterial supercapacitors.
About this data: built from Fliar's company, founder, funding, hiring, jobs, news and research trackers, covering Spain. Counts are of companies we track, not of every company that exists. Updated August 2026.
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