Zelestra completes three solar plants in Spain totalling 57 MWac to supply Tesla with 130 GWh annually

Zelestra just flipped the switch on three solar plants in Castilla-La Mancha, Spain—all on schedule. The Brazatortas I, II, and IV facilities add up to 57 MWac and will send roughly 130 GWh of renewable electricity to Tesla every year under an existing power purchase agreement.

Three Brazatortas plants reach full commercial operation

The three Brazatortas facilities are now fully operational in Castilla-La Mancha, one of Spain’s sunniest corners. Zelestra hit the milestone on time—something the company made a point of flagging.

Together, the plants carry 57 MWac of capacity, translating to around 130 GWh of renewable electricity per year. All of it goes to Tesla through a pre-existing PPA. That structure gives Tesla a guaranteed clean energy supply, while Zelestra had a committed buyer before a single panel went live.

Zelestra holds a 6.8 GW pipeline in Spain alone, with 1.2 GW already contracted, and Spain is just one of four strategic markets alongside the US, Germany and Italy.

The Brazatortas name probably doesn’t mean much outside the energy world, but the numbers behind it do. Getting three utility-scale solar projects across the finish line simultaneously, on time, under a high-profile corporate contract—that’s a genuine execution win for any developer.

In-house EPC team delivers projects under Tesla PPA

The scale here is notable. So is how Zelestra pulled it off. The company ran the entire process through its own in-house EPC team—engineering, procurement, and construction all handled internally, with no third-party contractor involved. That gives Zelestra direct control over timelines, costs, and quality. When delivery lands on schedule, the credit sits squarely with the company’s own people.

Jaime Burguete, CEO of Zelestra in Spain, put it simply: “Reaching full operation at Brazatortas is an important milestone for Zelestra, ensuring Tesla has the energy that they need on time.” He added that the projects demonstrate the company’s “ability to deliver reliable, customer-focused renewable energy solutions.”

The PPA model is worth understanding. Tesla doesn’t own these plants—it simply agrees to buy the electricity they produce at a pre-negotiated rate over a set period. For corporate buyers with serious sustainability targets, that structure offers price certainty and clean energy credentials without the headache of owning generation assets. For Zelestra, building projects that are already contracted before construction starts cuts merchant risk and makes financing cleaner. Brazatortas is proof the model works.

Tesla and Zelestra expand partnership with new Texas solar deal

Before the Spanish milestone had a chance to settle, the next deal was already in motion. Tesla has signed a new PPA with Zelestra for the Lumen Farm solar project in Texas—this one for 140 MWac.

That’s a bigger commitment than everything in Spain combined. Lumen Farm signals that Tesla’s appetite for contracted renewables is growing, and it moves the Zelestra–Tesla relationship into the US market for the first time.

Texas makes sense as a landing spot. The state runs one of the most active wholesale electricity markets in the country and gets plenty of sun. Entering it with a Tesla PPA already in hand takes a lot of the development risk off the table for Zelestra.

Put the two deals side by side—57 MWac in Spain, 140 MWac in Texas—and it starts to look less like a series of transactions and more like a deepening partnership. Corporate energy buyers want developers who can execute across multiple geographies, and Zelestra is clearly building toward exactly that.

Zelestra’s broader pipeline and strategic growth markets

Brazatortas and the Texas announcement aren’t standalone moments. They fit into a much larger growth story Zelestra is building across four markets: Spain, the US, Germany, and Italy.

In Spain alone, the company has assembled a 6.8 GW pipeline of solar, battery storage and wind projects. Of that total, 1.2 GW is already under contract—committed offtakers in place, same structure as the Tesla arrangement. For a developer still in active growth mode, that’s a solid contracted base to build from.

The technology mix is also worth paying attention to. Including battery energy storage alongside solar and wind reflects a real shift in what corporate buyers want—guaranteed, dispatchable power matters more than intermittent generation that stops when clouds roll in. BESS projects help close that gap. Zelestra calls itself a multi-technology, customer-focused renewable energy developer, a framing that positions the company not as a pure solar shop but as a broader energy solutions provider capable of handling gigawatt-scale procurement across countries and technologies.

A 6.8 GW pipeline in Spain alone

Here’s where things stand. Zelestra has delivered 57 MWac of solar capacity in Spain, on schedule, under a Tesla PPA that will supply around 130 GWh of renewable energy annually. The in-house EPC model made that on-time delivery possible.

The Tesla relationship is getting bigger. A new 140 MWac PPA for the Lumen Farm project in Texas takes the partnership into the US and represents a larger bet than the Spanish deal.

Step back further and the picture grows considerably. Zelestra holds a 6.8 GW pipeline in Spain alone, with 1.2 GW already contracted, and Spain is just one of four strategic markets alongside the US, Germany and Italy. If you’re tracking corporate renewable energy procurement or utility-scale solar development in Europe or North America, this is a company worth keeping on your radar.

Kelly Lippke

Kelly is an experienced writer with 15 years of experience exploring the big stories that shape our world, from tech breakthroughs and space exploration to climate, energy, and the fascinating quirks of science. She has a talent for turning complex ideas into sharp, memorable insights that stay with readers long after they’ve finished reading.