Repsol Launches '100% Renewable' Gasoline in Spain

Repsol Produces 'Renewable' Gasoline on an Industrial Scale

Repsol has achieved industrial-scale production of 100% renewable-origin gasoline at its Tarragona plant, the company announced on October 8, 2025. Marketed as Gasolina Nexa 95, the new fuel is already available at 20 Spanish service stations, with plans to reach 30 by year-end. The price is approximately 10 cents per liter higher than conventional gasoline, placing it in the range of premium 98 octane.

That is the official statement. However, the nuance hinted at in the press release—and omitted from the headline—is that Repsol has industrialized a biofuel subjected to extra refining processes, rather than a synthetic fuel derived from electricity or a chemical formula storing photovoltaic surplus. The word "renewable" does heavy lifting in this context.

What Exactly Is Repsol's Renewable Gasoline?

According to debate participants, the product starts from waste materials—such as used vegetable oil—which undergo additional chemical treatment so their formulation resembles fossil fuel closely enough to be blended without being labeled as a biofuel. In other words, it lacks the E10 or E85 label that indicates ethanol presence. This is the technical novelty: biodiesel has existed for decades, but biologically sourced gasoline adapted to existing infrastructure is different.

The issue isn't chemistry; it's scale. A fuel fed by waste from other industries—fryer oil, agricultural residues, byproducts—has a production ceiling dictated by available waste volume. It can move a small percentage of the vehicle fleet but cannot replace current gasoline consumption. If raw materials must be cultivated specifically to feed the refinery, costs skyrocket and the environmental balance becomes complicated.

Price and Labeling: What Doesn't Add Up

Gasolina Nexa 95 costs about 10 cents more per liter than conventional fuel, aligning with premium 98 prices. For the average driver, this annual surcharge is significant. There is also fiscal uncertainty: if renewable fuel pays the same excise taxes as fossil fuel, the consumer incentive reduces to the environmental label.

Another paradox emerges. A combustion engine car using this gasoline emits less than one using conventional fuel, but still emits. The DGT (Spanish Traffic Authority) environmental badge does not distinguish between an old diesel and a vehicle powered by biofuel. Some argue these fuels should receive the ECO label, allowing access to restricted zones without changing cars.

Is This Real Competition for Electric Cars?

No, and it should be stated plainly. Combustion engines are far less efficient than electric motors in converting energy to motion, meaning generating the same mileage requires more land, raw materials, and industrial processing. According to calculations circulating in the debate, renewables need less space to produce equivalent energy: a 500 MW photovoltaic plant occupies around 1,000 hectares, and covering Spain's total electricity demand would require roughly 0.6% of its territory. The comparison with biofuels does not fare well.

What this product offers is a transition path for sectors where electrification arrives late or not at all: long-haul trucks, agricultural machinery, heavy fleets. Here, biofuel makes sense. In urban tourism, it is an expensive solution to a problem that already has another answer.

Stock Market Context: The News Also Reads on the Floor

Repsol shares have risen more than 50% in recent months. In this context, a technological milestone announcement disseminated by economic media serves a function beyond information: sustaining the narrative for investors. This is not an accusation but a known pattern. Listed companies communicate pogre when convenient, and media read by investors amplify the message.

Renewable fuel exists, is produced, and is sold. What does not yet exist is the scale required to speak of a substitute. Based on data available at the time of this analysis, Repsol's 100% renewable gasoline is a niche product with transitional ambitions, not the silver bullet the headline suggests. If production scales beyond available waste, conclusions will need revision. For now, it remains a minority option.