Festive Lights says LED Christmas displays can cost pennies to run

Festive Lights published an analysis showing how October's UK energy price cap changes affect the cost of powering domestic Christmas lights. The company says modern LED displays can run for the festive season for pennies or only a few pounds, with wattage and hours of use doing most of the work.

Why it matters: - Festive lighting has long been seen as an energy-cost tradeoff for households. - Festive Lights says LEDs have pushed running costs so low that price is rarely the deciding factor for Christmas displays. - The analysis lands as UK households face a new Ofgem price cap and continue watching electricity bills closely.

What happened: - Festive Lights published an analysis of the running cost of a domestic Christmas lights display under the electricity price cap that took effect on 1 October 2026. - The company examined how the move from incandescent bulbs to LEDs has changed festive lighting costs. - The analysis used current electricity prices and worked examples to show how much typical displays cost to run. - Festive Lights is a UK-based supplier of decorative lighting for homes and businesses.

The details: - From 1 October to 31 December 2026, the Ofgem price cap set a typical annual dual-fuel bill of £1,723 for a household paying by direct debit. - That was about 4% higher than the previous quarter. - Electricity was capped at an average of 26.32 pence per kilowatt-hour. - A temporary removal of VAT from domestic electricity, running from October 2026 to March 2027, helped keep the electricity unit rate close to flat despite higher wholesale costs. - Industry figures cited in the analysis say LED decorative bulbs use up to 90% less electricity than incandescent equivalents. - A modern LED string of around 10 metres draws about 3.5 watts. - An older incandescent set of similar length typically drew 10 to 20 times as much power. - At six hours a night, a 10-metre LED string uses about 0.021 kilowatt-hours a day. - At the October 2026 electricity rate, that works out to roughly half a penny a day, or about 17 pence across December. - A low-voltage LED fairy set rated at under 1 watt costs around a tenth of a penny a day to run on the same basis. - A 20-metre LED cluster light set rated at 4.2 watts costs about 20 pence to run across December at six hours a night. - A combined display using several connected elements, including net lights, string lights, cluster lights and icicle lights, can cost under £5 for the month at current prices. - A 150-watt television uses more electricity in one evening than a modest LED light set consumes over the whole month of December. - Festive Lights also compares the cost of a comprehensive outdoor display to less than a single takeaway meal over a month. - Running cost depends on wattage, hours of use and the electricity unit price. - Standing charges are separate from appliance running costs. - The figures in the analysis apply to LED products, and older incandescent displays will cost much more to run. - The company says it publishes wattage figures for its connectable products and offers an online calculator for estimating running cost from wattage, hours of use and electricity unit rate. - Festive Lights says the calculator is intended to help households estimate the cost of a specific planned display.

Between the lines: - The real driver of cost is not the decoration itself but how long it stays on each night. - A timer can lower costs by cutting wasted overnight use. - The shift from incandescent to LED has changed Christmas lighting from a noticeable bill item into a low-cost household choice. - That shift also means buyers are increasingly choosing based on design, durability and upfront price instead of operating cost. - The company frames its examples as illustrative, not guaranteed costs for every household.

What's next: - Household interest in Christmas lighting typically rises from early October as people plan displays. - Early buying lets households compare wattage, compatibility and running cost before stock narrows closer to December. - Festive Lights expects connected and controllable lighting systems to become even more precise as scheduling and dimming improve. - The company says it will continue to publish wattage and running-cost information for its connectable ranges.

The bottom line: - For most households, the electricity cost of a modern LED Christmas display is now small enough that wattage and timer use matter more than the display itself.