2026 heat-pump night vs day tariffs in Europe: which 10 markets still reward shifting load?

Which European markets still have meaningful night-time electricity discounts in 2026?

The short answer is that the research corpus does not contain country-by-country regulated or retail day and night electricity tariffs for ten markets in 2026. It contains current average household electricity prices across Europe, electricity-to-gas ratios, and electricity tariff histories for Germany, France, Spain and Italy only (country_compare / Eurostat · NASA POWER · EEA · Househeating Pulse subsidy register; price_ratio / Eurostat household band DC (electricity) / D2 (gas), latest semester; tariff_history / Eurostat · electricity household band · series for DE; FR; ES; IT).

That matters because several of the required questions ask for figures such as the exact night/day spread in cents per kWh, the annual euro savings from shifting load into the night window, and how much consumption can be moved into that cheaper period. The registry does not record those dual-rate tariff components, nor the length of the off-peak window, for any of the ten markets.

What the corpus can show is narrower but still useful for running-cost decisions:

• where household electricity is expensive enough that any off-peak discount would matter more, such as Ireland at €0.4042/kWh (country_compare / Eurostat · NASA POWER · EEA · Househeating Pulse subsidy register) and Germany at €0.3869/kWh (country_compare / Eurostat · NASA POWER · EEA · Househeating Pulse subsidy register);
• where average electricity is already relatively cheap, such as Hungary at €0.1082/kWh and Bulgaria at €0.1355/kWh (country_compare / Eurostat · NASA POWER · EEA · Househeating Pulse subsidy register);
• and where heat pumps face a comparatively favourable or unfavourable electricity-to-gas relationship, visible in the live 32-country comparison and market index.

For households considering dual-rate tariffs, the practical reading in 2026 is therefore conditional: if a market already has high all-in electricity prices, even modest off-peak discounts may be worth capturing; if the base tariff is low, the value of complex automation is likely smaller. The precise threshold, however, cannot be quantified from this corpus because the day/night split is absent.

How big are the current day/night spreads, country by country?

The corpus does not provide current day and night prices, so it cannot answer “how many cents per kWh cheaper is household electricity at night than during the day” for each of 10 markets. It also cannot calculate the exact night/day spread.

What it does provide is the latest average household electricity price for each market, which sets the ceiling for any possible saving from time-of-use shifting.

For tariff shoppers, that ranking is still operationally useful. A 5 c/kWh off-peak discount is worth much more where the day rate starts from an expensive retail base than where tariffs are already compressed. Readers can cross-check country context via the country index, or inspect a specific market such as Germany, France, Spain or Italy.

Where does the tariff gap translate into real annual savings for heat-pump owners?

The corpus cannot compute annual euro savings from shifting a defined share of heat-pump consumption from day to night, because three required inputs are missing:

1. current day tariff, 2. current night tariff, and 3. the defined shiftable share of annual heat-pump electricity use.

Without those, there is no defensible way to put a numeric euro figure on savings. The registry also does not record a “typical heat-pump household” annual consumption for this comparison.

What can be said is that the potential value of any off-peak spread rises with the underlying retail electricity price. By that measure, households in high-price markets such as Ireland at €0.4042/kWh, Germany at €0.3869/kWh and Belgium at €0.3499/kWh have more to gain from a meaningful night discount than households in Hungary at €0.1082/kWh or Bulgaria at €0.1355/kWh (country_compare / Eurostat · NASA POWER · EEA · Househeating Pulse subsidy register).

For households modelling their own case, the right workflow is to combine an actual supplier day/night tariff with building demand, emitter type and storage capacity. That is exactly where the payback calculator, sizing calculator, climate-fit tool and the model-level heat-pump catalog become more useful than national averages alone.

Which markets have the strongest case for smart controls or thermal storage?

The corpus cannot rank 10 markets by the strength of the current night/day tariff gap, because it does not contain those dual-rate figures. It also cannot test a threshold such as “large enough to justify smart controls or thermal storage, measured against a threshold savings level in euros per year”, because neither the spread nor the annual savings are recorded.

Still, the available data does indicate where the economics of heat pumps are structurally strongest or weakest against gas.

Using the current electricity-to-gas ratio:

• Sweden sits at 1.3 (price_ratio / Eurostat household band DC (electricity) / D2 (gas), latest semester),
• Netherlands at 1.49 (price_ratio / Eurostat household band DC (electricity) / D2 (gas), latest semester),
• Portugal at 1.73 (price_ratio / Eurostat household band DC (electricity) / D2 (gas), latest semester),
• France at 1.78 (price_ratio / Eurostat household band DC (electricity) / D2 (gas), latest semester).

At the other end:

• Romania is 5.11 (price_ratio / Eurostat household band DC (electricity) / D2 (gas), latest semester),
• the United Kingdom 4.63 (price_ratio / Eurostat household band DC (electricity) / D2 (gas), latest semester),
• Belgium 3.9 (price_ratio / Eurostat household band DC (electricity) / D2 (gas), latest semester),
• Poland 3.71 (price_ratio / Eurostat household band DC (electricity) / D2 (gas), latest semester).

A lower electricity-to-gas ratio generally means the heat pump starts from a stronger running-cost position even before load shifting. In that sense, markets such as Sweden, the Netherlands and France need less help from time-of-use arbitrage than markets where electricity is priced much further above gas.

The corpus also cannot answer where the current night tariff falls below the country’s gas-to-electricity breakeven threshold, because the night tariff itself is not present. Nor does it record controllable headroom of 25%, 50% or 75% of annual consumption into a night window. That depends on tariff structure, building thermal mass, cylinder size, buffer volume and control logic, none of which are included here. Readers assessing equipment-side flexibility can compare high-efficiency units on the top SCOP leaderboard, the air-to-water SCOP ranking, or quieter retrofit-friendly products on the quietest models list.

How much has the night-time advantage changed over time?

Again, the corpus does not contain historical night vs day tariff spreads, so it cannot identify which countries have seen the dual-rate gap widen or narrow the most since the earliest available point. It only contains historical average household electricity prices for four countries.

Those four histories still show how the broader electricity backdrop has shifted since 2018:

• Germany rose from €0.2987/kWh in 2018 H1 to €0.3869/kWh in 2025 H2, an increase of €0.0882/kWh (tariff_history / Eurostat · electricity household band · series for DE).
• France rose from €0.1748/kWh in 2018 H1 to €0.2561/kWh in 2025 H2, an increase of €0.0813/kWh (tariff_history / Eurostat · electricity household band · series for FR).
• Spain rose from €0.2383/kWh in 2018 H1 to €0.2669/kWh in 2025 H2, an increase of €0.0286/kWh (tariff_history / Eurostat · electricity household band · series for ES).
• Italy rose from €0.2067/kWh in 2018 H1 to €0.2966/kWh in 2025 H2, an increase of €0.0899/kWh (tariff_history / Eurostat · electricity household band · series for IT).

Among those four, Italy shows the largest absolute increase at 8.99 c/kWh and Spain the smallest at 2.86 c/kWh (tariff_history / Eurostat · electricity household band · series for IT; ES). Peak historical levels were also uneven:

• Germany reached €0.4125/kWh in 2023 H1 (tariff_history / Eurostat · electricity household band · series for DE),
• France €0.2926/kWh in 2024 H2 (tariff_history / Eurostat · electricity household band · series for FR),
• Spain €0.3350/kWh in 2022 H2 (tariff_history / Eurostat · electricity household band · series for ES),
• Italy €0.3782/kWh in 2023 H1 (tariff_history / Eurostat · electricity household band · series for IT).

That historical context suggests why off-peak optimisation remains attractive in some households: when base electricity prices stay elevated, even moderate tariff differentials retain value. But the corpus cannot prove whether the night-time advantage itself has widened or narrowed, because Eurostat’s series here is not split into day and night components. For methodology detail, see our formulas and version history, and for the official datasets see Eurostat and the EU energy label and product registry framework.

What this means for households choosing between flat, dual-rate, and automated heating strategies

The evidence here supports a narrower claim than the headline question suggests.

In 2026, what can be said with confidence is:

• electricity costs still vary widely across European heat-pump markets, from €0.1082/kWh in Hungary to €0.4042/kWh in Ireland (country_compare / Eurostat · NASA POWER · EEA · Househeating Pulse subsidy register);
• heat pumps face much friendlier electricity-to-gas pricing in some markets than others, with ratios from 1.3 in Sweden to 5.11 in Romania (price_ratio / Eurostat household band DC (electricity) / D2 (gas), latest semester);
• and average household electricity prices since 2018 have risen materially in Germany, France and Italy, but much less in Spain (tariff_history / Eurostat · electricity household band · series for DE; FR; ES; IT).

What cannot be said from this dataset is which 10 markets still reward shifting load by a specific amount in cents per kWh or euros per year. The registry does not record night/day tariffs, off-peak windows, or shiftable load shares, so any exact ranking on those points would be fabricated.

For households, that leads to a practical rule. Start with the simplest option that matches the tariff actually on offer:

• If only a flat tariff is available, focus on equipment efficiency, sizing and subsidy support using the subsidy index, subsidy calculator and the manufacturer directory.
• If a supplier offers a dual-rate tariff, the key missing test is the actual spread versus the added complexity of controls.
• If a building already has underfloor heating, hot-water storage or high thermal mass, automation may still be sensible — but only after plugging in a real tariff sheet rather than relying on national averages.

That is slightly less dramatic than the standard “shift everything to the night rate” story. In many 2026 households, the economic case for sophisticated controls will hinge less on theory and more on the exact supplier tariff, the building’s storage headroom, and the efficiency of the selected unit from the live heat-pump catalog or leaderboards hub.

Sources

• Eurostat · NASA POWER · EEA · Househeating Pulse subsidy register — snapshot 2026-07-01
• Eurostat household band DC (electricity) / D2 (gas), latest semester — snapshot 2026-07-01
• Eurostat · electricity household band · series for DE — snapshot 2026-07-01
• Eurostat · electricity household band · series for FR — snapshot 2026-07-01
• Eurostat · electricity household band · series for ES — snapshot 2026-07-01
• Eurostat · electricity household band · series for IT — snapshot 2026-07-01

Continue reading

• Heat pump payback calculator — Use tariff, efficiency and subsidy inputs to test real-world running-cost cases.
• How to size a heat pump correctly — Oversizing and undersizing can erase any tariff-side savings.
• SCOP explained for buyers and installers — A quick refresher on the performance metric that most affects annual electricity use.
• Dual-rate tariffs and heat pumps — What to check before adding smart controls, buffers or timed hot-water charging.