Five battery energy storage projects for 215 MW enter public consultation in northern Spain

Spain continues to expand its battery energy storage capacity, with five new BESS projects in Asturias entering public consultation. Two of these projects have already received administrative approval, marking a step forward in the region’s energy transition.

New projects under review:

Spanish renewable energy firm Grenergy has applied for permits for two twin storage projects in Ponton Vaqueros, Oviedo—BESS Asturias 2 and BESS Asturias 3—each with a capacity of 48.64 MW and an energy storage capacity of 238.528 MWh. These projects will include 64 battery containers, each capable of storing 3.727 MWh, along with eight power stations and medium-voltage switchgear.

The estimated investment stands at €59.5 million and €55.6 million, respectively.

Portuguese energy company TagEnergy has submitted an application for the Tabiella BESS 132 kV project, a 100 MW storage facility in Gozón and Avilés. The project consists of 12 Twin Skid power blocks, each with six battery containers storing 3 MWh per unit or a presumed total of 216 MWh. It will feature 136 lithium-ion battery modules per container, with a total investment of €64.9 million.

Projects granted permits:

The Asturias Ministry of Ecological Transition, Industry, and Trade has granted construction permits for two additional projects in Corvera and Siero.

• BESS Pixin (Aspiravi): A 5 MW battery storage park in Trasona/Tresona, connected via a 736-meter underground transmission line.
• BESS Axpo Storage ES1 (Axpo Iberia): A 10 MW / 47.6 MWh lithium-ion battery system in Granda, Siero, connected to the Meres substation via a 1.36-kilometer underground line.

According to the latest International Energy Agency (IEA) report, Spain ranks second globally in advanced battery storage project development, trailing only the United States. Current projects worldwide total 55 GW of storage capacity, with Spain accounting for 29% of this, while the U.S. leads with 64%. The UK follows at 12%, Australia at 5%, and Chile with less than 1%.

With this continued expansion, Spain is reinforcing its position as a leader in large-scale energy storage, supporting the integration of renewables into the grid and enhancing energy security.