Electricity Prices and Underfloor Heating: How 2026 Energy Costs Reshape the Buyer’s Calculation
Every year around October, the same question arrives in our inbox: “I was quoted €X per square metre for electric underfloor heating — but now electricity prices are up, is it still worth it?” The honest answer is more nuanced than either the gas lobby or the floor-heating industry usually admits. Electricity prices have risen across Europe and North America, and they will keep fluctuating; but the calculation that matters is not the headline price per kWh — it is the cost per square metre per heating season, and that number is decided by system efficiency, insulation, and how intelligently the floor is controlled. This article walks through the real cost math with current prices, compares heating film, mat and cable under high tariffs, and gives buyers a decision framework that survives price swings.
If you are sourcing for a project now, get a heating film bulk order quotation with your area and insulation details — the difference between a well-designed electric floor and a badly designed one is usually larger than the difference between this winter’s and last winter’s electricity price.
What Is Actually Happening to Electricity Prices
It helps to separate three different things that get lumped together as “electricity prices”. First, wholesale market prices, which spiked in the 2022–2023 energy crisis and have since settled into a more volatile pattern driven by gas and weather-dependent renewables. Second, household retail tariffs, which include network charges, taxes and levies — in many EU countries retail electricity now sits in the €0.24–0.38/kWh range depending on region and contract, and in parts of North America between $0.12 and $0.35/kWh. Third, time-of-use structures: an increasing number of markets now price night or off-peak electricity substantially below daytime rates, sometimes by 30–50%.
None of this makes electric floor heating automatically cheap or automatically expensive. What it does is change the design priorities: insulation and thermal mass matter more, the thermostat matters more, and the heating schedule matters more. The floor heating system is no longer a passive luxury add-on — it is a load that needs to be controlled to hit the cheap hours.
How Energy Prices Change the Floor Heating Cost Equation
Let us put numbers on it. The running cost of an electric floor is:
Cost per season = (W/m² × hours on × kWh price) / 1000
Take a 20 m² living room. A well-insulated system with a floor sensor and a schedule runs roughly 6–8 equivalent full-load hours per day in winter (the elements cycle on and off).
| Scenario | Installed W/m² | Daily equivalent hours | kWh/season (120 days) | At €0.30/kWh | At €0.15/kWh (off-peak) |
|---|---|---|---|---|---|
| Poorly insulated, no schedule | 160 | 10 | 3 840 | €1 152 | €576 |
| Insulated, floor sensor + schedule | 130 | 7 | 2 184 | €655 | €328 |
| Insulated, off-peak tariff + zoned control | 130 | 7 (shifted) | 2 184 | — | €328 |
The takeaway is not the absolute numbers — it is the ratio. The same room, the same heating product, costs three times less when insulation, control and tariff are handled properly. That is the real “price of electricity” story for floor heating buyers, and it is why a cheap system with no thermostat and no insulation is always the most expensive option in a high-price environment.
Heating Film, Mat or Cable Under High Tariffs: What the Product Choice Actually Changes
All three product families convert electricity to heat at essentially the same efficiency — resistance heating is resistance heating. The differences that matter under high prices are: heat-up response, how well the system can be zoned, and how thin the build-up can be (which affects whether insulation fits).
| Product | Typical W/m² | Heat-up | Zoning flexibility | Build-up height | Best fit under high tariffs |
|---|---|---|---|---|---|
| Heating film | 100–220 | Fast (10–30 min) | Very high — cut-to-size, per-zone circuits | Thin, 1–3 mm | Retrofits over existing floors; zonal scheduling pays off fast |
| Heating mat | 120–160 | Medium (30–60 min) | Moderate — fixed mats per area | ~3–4 mm plus adhesive | Tile and stone projects with stable schedule |
| Heating cable | 100–150 | Slow (1–3 h into screed) | High — custom layout | High (screed 3–5 cm) | New builds where thermal mass stores cheap night power |
Under a time-of-use tariff, the answer changes dramatically: a cable system buried in screed becomes a thermal battery — heat the screed during the cheap night hours and let it radiate through the day. A film system cannot store much heat, but it switches on and off quickly, so it pairs well with “heat only when the room is used” scheduling. There is no universal winner; the product choice follows the tariff structure. This is the same logic as our off-peak electric underfloor heating analysis, applied to a general price environment rather than a single tariff.
Buying Strategy for a High-Energy-Price Winter
If you are buying now, optimise in this order — the order reflects how much each factor moves the bill:
- Insulation first. A properly sized underfloor heating insulation R-value under the elements is the single highest-return purchase. It typically cuts heat loss to the subfloor by half or more.
- Thermostat with a floor sensor and scheduling. A programmable or smart thermostat is not a gadget; it is the controller that actually switches your floor off when the room is warm. The smart thermostat for underfloor heating range at SunAura ships with floor-sensor inputs for exactly this reason.
- Zone the layout. Split the floor into rooms or usage zones, each on its own circuit, so you are never heating the kitchen while you sleep in the bedroom.
- Match the tariff. If your market has cheap night rates and you are building new, a screed cable system with a timer is the cost-optimal combination. If you retrofit and need fast response, film with per-zone control is better.
- Size the power honestly. Do not let a supplier oversize “just in case” — every extra 20 W/m² is extra running cost every single day it is on.
Buyer Checklist Before You Commit
- Insulation thickness and R-value under the elements — confirm it is in the quotation.
- W/m² specified for your climate, not a generic 150 W/m² default.
- Thermostat type: floor sensor included? scheduling? app control?
- Zoning: how many circuits / thermostats does the layout need?
- Tariff awareness: does your utility offer off-peak, and can the system be programmed to use it?
- Supplier documentation: CE/RoHS certificates, heating film factory-direct batch records, and the real lead time.
Data & Evidence: Factory Numbers on Efficiency and Control
SunAura Thermal has built heating films, mats, cables and thermostats in Qingdao’s Huangdao district for 17 years, exporting to more than 50 countries. Factory test data for our film range shows a nominal operating voltage of 220–240 V with ±10% tolerance, and our thermostats include floor-sensor inputs and programmable schedules that cycle elements rather than running them continuously (per SunAura factory records). The plant operates under ISO 9001, ISO 14001 and ISO 45001, and ships CE, RoHS, LVD and EMC compliant products — documentation a buyer can request with any heating film bulk order.
None of this changes physics: the efficiency of converting electricity to heat is near 100% for all resistance elements. What the factory data does change is the control — the difference between a floor that runs 10 hours a day and one that runs 6 — and that is where the kWh bill is really decided.
FAQ
Is electric floor heating still worth it when electricity prices are high?
Yes, if the system is insulated, zoned and controlled. A badly designed electric floor is expensive at any price; a well-designed one typically delivers lower annual running cost than a gas boiler for a modern, well-insulated home, and eliminates the standing charges and maintenance of a gas connection.
Will rising prices make underfloor heating unaffordable in 2026–2027?
Affordability is decided by design, not by the tariff alone. Buyers who optimise insulation, zoning and scheduling keep bills in check even in high-price winters; buyers who install oversized, uncontrolled systems feel every price rise.
Should I choose cable or film for a high-price market?
If your market has a meaningful off-peak night tariff and you are building new, screed cable lets you store cheap night heat. If you are retrofitting over an existing floor, film with fast response and per-zone scheduling gives you the most control per euro spent.
Do smart thermostats actually save money?
In factory tests and field installations, scheduling alone typically cuts running time by 20–40% compared with a manual thermostat, because the floor stops being heated during unoccupied hours. The saving is real and measurable — provided the installer wires the floor sensor correctly.
Get a Costed Proposal, Not a Quote
Ask your supplier for a costed proposal that includes insulation, thermostat, zoning and the expected running cost per season at your local tariff — not just a price per square metre of film. A manufacturer that can walk you through the running-cost math is a supplier worth buying from; one that only quotes per m² is selling product, not results. Send your floor plan and tariff details to SunAura and we will respond with a factory-direct proposal.
Ethan Sun, Founder & CEO, SunAura Thermal