A Spanish electrician says fitting a battery at his home has left him with an electricity bill that is close to nothing, Diario AS reports. Javier Domínguez made the remark in an interview with the newspaper, published on Sunday, 8 November 2026.
According to Diario AS, Domínguez described the outcome in plain terms: the household installed a battery and now pays next to nothing for power. The report does not give the size of the battery, the cost of the installation, or the period over which the saving was measured.
The account is a single homeowner's experience as told to the outlet, not the result of a study or a wider survey. Diario AS presents it through Domínguez's own description of his bill rather than through independently verified figures.
Even so, the comment points to a question many households face as storage becomes more common: whether the money spent on a battery is recovered through lower bills. The source material does not address payback times or upfront costs, and no comparison with a previous bill is provided.
The report also does not say whether the battery is paired with solar panels or charged from the grid, or how the household uses power across the day. Those details would matter to anyone weighing a similar step.
For now, the claim rests on one electrician's account. Readers should treat the near-zero bill as his personal result, as reported by Diario AS, rather than a guaranteed outcome.
What to watch next: whether Diario AS follows up with the installation costs and a full year of billing data behind the claim.
