One of the most common questions we hear from London homeowners considering an automated gate is how much it will add to their electricity bill. The answer is almost always: less than you think. Modern 24V gate motors are among the most efficient electrical devices in any household. This guide breaks down the real electric gate running costs so you can budget with confidence.
Standby Power vs Active Cycle Consumption
An automated gate motor draws power in two very different modes. In standby — which is the vast majority of its operating life — a modern 24V residential gate motor consumes between 3 and 8 watts. This is comparable to an LED bulb and represents the power required to keep the control board active, the safety sensors live, and the system ready to receive a command.
During an active opening or closing cycle, power consumption rises to between 60 and 150 watts for a typical single motor, lasting for the 10 to 20 seconds the gate takes to complete its travel. A pair of motors on a double swing gate draws proportionally more during the cycle, but the cycle duration is the same.
Older 230V AC motors — common on gates installed before 2015 — consume significantly more in both modes. Standby consumption on older units can reach 20 to 40 watts, and cycle consumption can exceed 300 watts per motor. If your gate was installed more than a decade ago, upgrading to a modern 24V DC system may be worth considering purely on energy efficiency grounds — our automated gate installations in London team can advise on what a system upgrade involves.
What Electric Gates Actually Add to Your Monthly Electricity Bill
Let us do the maths for a typical London household with a modern 24V gate system opening and closing around 10 times per day — a reasonable assumption for a family home.
Standby consumption: 5 watts x 24 hours x 365 days = 43.8 kWh per year. Active cycle consumption: 100 watts average x 20 seconds per cycle x 10 cycles per day x 365 days = 20.3 kWh per year. Total annual consumption: approximately 64 kWh.
At the current UK electricity unit rate — the Energy Saving Trust reports the typical UK rate at around 24p per kWh as of 2026 — that works out to roughly £15 to £16 per year. Less than £1.50 per month.
For properties with a battery backup unit fitted alongside the motor — which stores charge and powers the gate during power cuts — add a small additional draw for the trickle-charging circuit, typically 1 to 3 watts constant. This adds no more than £2 to £3 per year to the running cost.
Annual Servicing and Maintenance Costs
Electricity is the smallest element of the true annual running cost of an electric gate. The more significant ongoing cost is servicing.
A professional annual service from a London gate engineer typically costs between £120 and £200 for a standard residential system. This covers motor lubrication, safety sensor testing and calibration, hinge adjustment and greasing, track cleaning for sliding gates, intercom function test, battery backup check, and a general structural inspection. Skipping the annual service risks voiding manufacturer warranties and turning small problems into expensive failures.
Over a 10-year period, a realistic total running cost budget for a London residential automated gate — electricity, annual servicing, and occasional minor repairs — is £2,000 to £3,500. Spread over the decade, that is £200 to £350 per year.
How Modern 24V Systems Compare to Older Motors
If you have an older gate system installed before 2015, motor technology has advanced considerably. Modern 24V brushless DC motors are more energy-efficient, quieter, smoother, and significantly more reliable than the 230V AC motors that dominated the market a decade ago.
The efficiency gain translates directly to running costs: a modern system might cost £16 per year in electricity where an older 230V system on the same gate costs £45 to £60. Over 10 years, that is a saving of £300 to £450 in electricity alone, before accounting for the reduced repair frequency of modern motor technology.
Many London homeowners with older gate systems are surprised to discover that a full motor and control board upgrade — fitting a modern 24V system to existing gates — costs far less than replacing the gate itself. If your current system is noisy, slow, or unreliable, this is often the most cost-effective route. Drop your phone number in the form above and our team will call back to discuss whether an upgrade makes financial sense for your system.
