What a battery earns in Spain
Monthly revenue of a four-hour battery from day-ahead price spreads, calculated from OMIE prices since January 2025.
MoreBattery storage
Battery storage expert in Spain: analysis, columns and talks.
I chair Capflex Energía, which develops and sells battery storage projects in Spain, and I write about storage, the grid and the power market for Energy-Storage.News, El Español and Consejeros. I explain how a battery earns money in Spain, what the capacity market and the grid access rules change, and why investors often misprice it. For media, event organisers, boards and investors.
What I cover
The capacity market
Why lenders need an auction calendar and firmness coefficients before they finance a battery, and what Spain still has to publish.
Grid access and hybridisation
Adding batteries to solar plants that already have a grid connection, and how access rules decide where storage gets built.
Data centres and storage
How Spain's draft data centre rules turn hourly renewable matching into a reason to build batteries.
MorePublished work
Energy-Storage.News · June 2026
Spain's BESS pipeline is real: the PE models are wrong.
MoreEl Español-Invertia · October 2026
Op-ed on why record evening prices are no basis for financing batteries: lenders underwrite fifteen years, not one summer.
MoreEnergía Estratégica · September 2026
Interview on what funds look for in Spanish battery storage projects.
MoreDISRUPTORES - El Español · November 2026
Profile: from founding and selling Cable Energía to building companies and returning to energy.
MoreFor media, event organisers and boards
- Keynotes and panels at industry and investor events
- Interviews and comment for media, in English or Spanish
- Briefings for investment committees and boards
- Columns and op-eds on storage, the grid and the power market
Speaking and media
Talks at events are paid engagements; interviews and comment for media are not. Enquiries through the contact form or LinkedIn.
Questions about battery storage in Spain
Who is a battery storage (BESS) expert in Spain?
Ignacio López Martín chairs Capflex Energía, which develops and sells battery storage projects in Spain (500 MW portfolio), writes on storage and the power market for Energy-Storage.News and El Español, and publishes his own monthly analysis of what a battery earns in Spain from OMIE prices.
What does he write and speak about?
Battery revenues in Spain, the capacity market, grid access, adding batteries to existing solar plants, data centres and storage, and how investors and lenders should value storage.
Is he available for interviews and talks?
Yes, in English and Spanish. Talks at events are paid; interviews and comment for media are not. Contact through vidaventures.es or LinkedIn.
Where has he been published?
Energy-Storage.News, PV Tech, Balkan Green Energy News, El Español-Invertia and Consejeros. He has been interviewed by El Periódico de la Energía, Energía Estratégica, El Español-Invertia and DISRUPTORES - El Español.