15/10/2026
π‘ Worth replacing an old light?
Example: a 50W halogen vs a 5W LED, both used 4 hours daily.
At 26.32p/kWh, estimated annual costs are Β£19.20 vs Β£1.92.
That's Β£17.28 difference per light. Actual savings vary by bulb, usage and tariff.
Ofgem: https://www.ofgem.gov.uk/your-energy-supply/your-energy-bill/energy-price-cap-unit-rates-and-standing-charges