15/09/2025
How Much Energy Does a Provarm Heating Film Use? A Comparison with a Light Bulb (UK)
Many people wonder how much electricity a heating film actually consumes. Provarm heating films, for example, are available in 80 W, 140 W and 220 W per running metre. What does this look like in practice — and how does it compare to a light bulb?
Power and Energy Consumption – The Basics
Energy consumption is calculated as Power (W) × Time (h). The result is expressed in kilowatt-hours (kWh) — the unit your electricity supplier uses:
kWh
=
Power [W]
×
Time [h]
1000
kWh=
1000
Power [W]×Time [h]
Example: A 1000 W device running for 1 hour uses 1 kWh.
Comparison of Provarm Heating Films with Light Bulbs
Product / Power (per m²) Consumption per hour Equivalent Light Bulb
Provarm Heating Film 80 W 0.08 kWh like an 80 W bulb
Provarm Heating Film 140 W 0.14 kWh like a 140 W bulb
Provarm Heating Film 220 W 0.22 kWh like a 220 W bulb
Light Bulb 60 W 0.06 kWh –
Light Bulb 100 W 0.10 kWh –
(Values based on continuous operation per hour)
What Does It Cost in the UK?
Average electricity price in the UK: £0.28 per kWh
Heating film 80 W for 1 h ≈ £0.02 (0.08 kWh × £0.28)
Heating film 140 W for 1 h ≈ £0.04 (0.14 kWh × £0.28)
Heating film 220 W for 1 h ≈ £0.06 (0.22 kWh × £0.28)
For comparison:
Light bulb 100 W for 1 h ≈ £0.03 (0.10 kWh × £0.28)
Why a Heating Film Can Still Be Efficient
It heats surfaces rather than air — warmth is felt faster.
It can be installed only where heat is needed.
With a thermostat, it doesn’t run continuously at full power — real consumption is often lower.
Conclusion
Provarm heating films of 80 W, 140 W and 220 W consume roughly the same amount of energy as light bulbs of corresponding wattage. Thanks to controls and localised heating, a heating film can be a more targeted and economical way to heat than traditional electric heaters with much higher power.
