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BESS Udondo

A battery installation of 1 MW and 4.2 MWh in Artziniega, Araba/Álava, environmental decision. Every fact below is taken from the latest act in the regional gazette of the Basque Country that states it, and every act is linked.

In the gazette

Battery power1 MW
Storage4.2 MWh
Hours at full power4.2
PromoterUdondo Energía, S.L.
ConfigurationStand-alone
MunicipalityArtziniega
ProvinceAraba/Álava
SubstationLínea 4 Arceniega-Gordexola-C-4 13,2 kV (i-DE)
Step reachedEnvironmental decision

Every act, oldest first

PublishedWhat the act doesAuthorityAct
9 Aug 2026Environmental decision; 1 MW, 4.2 MWhIndustria, Transición Energética y SostenibilidadBOPV-2026-08-3534

Each act was read in full and every figure checked against the act’s own words. Where acts differ, the latest act that authorises the installation gives the figure above. Source: the regional gazette of the Basque Country, read 26 to 27 October 2026; only facts are taken from it, and each act is linked.

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