Written Question·Department for Energy Security and Net Zero·UIN 116783

Energy: Housing

Tabled: 2 March 2026

Answered: 10 March 2026

Question

Mr Richard Holden

To ask the Secretary of State for Energy Security and Net Zero, what assessment his Department has made of the impact of voltage reduction technologies installed in homes on household energy bills.

Answer

Michael Shanks

The effect of voltage reduction on consumer bills varies between appliances. For appliances that are power controlled (including most electronics, LED lighting, EV chargers and heat pumps), lowering the voltage does not reduce energy consumption and reduc...

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