Snowmaking is one of the largest electricity loads a ski resort carries. Austria's resorts together use about 281 GWh per season — roughly 0.46% of the country's entire electricity supply. Per cubic metre, a modern fan gun draws around 0.5–1.5 kWh, and in the early season snowmaking can be about half of a resort's power bill. The lever that matters is energy per cubic metre, not switching the guns off.
For a snowmaking manager, electricity is the line item that turns a good snow window into an expensive one. This guide breaks down how much power snowmaking actually uses, where it goes inside the system, how it scales with temperature, and the levers — including the one most efficiency guides omit — that bring the number down.
Key takeaways
- Austrian snowmaking uses roughly 281 GWh per season, about 0.46% of national electricity, per Aigner, Steiger & Mayer (2026).
- A modern fan gun uses about 0.5–1.5 kWh per cubic metre of snow; lances are at the efficient end (~0.6–0.7 kWh/m³).
- Snowmaking can be roughly half of a resort's electricity bill and the majority of its energy use in the October–January build-up.
- Energy per cubic metre rises sharply as the wet-bulb temperature approaches the margin — the last few hours before a gun shuts off are the most expensive snow you make.
- The efficiency levers are pumping, compressed air, gun choice, timing, and — the one usually left out — additive chemistry that widens the productive window per unit of energy. SL6733 figures are modelled and pre-commercial.
How much electricity does snowmaking use?
At national scale, a lot: Austria's snowmaking consumes about 281 GWh in a season, equal to roughly 0.46% of the country's total electricity, alongside some 51 million cubic metres of water. At resort scale, snowmaking is typically the single largest electricity load, and per unit it runs at roughly 0.5–1.5 kWh per cubic metre of snow for modern equipment.
The national figure comes from Aigner, Steiger and Mayer (2026), who quantified Austrian snowmaking at 281 GWh and about 2,900 m³ of water per hectare per season. Canada's picture is comparable in structure: Steiger et al. (2024) put Canadian snowmaking at roughly 478,000 MWh and 43.4 million cubic metres of water to produce about 42 million cubic metres of snow — and projected demand rising 55–97% by 2050 as warming forces more marginal-condition production. The per-cubic-metre gun figures (about 0.7 kWh/m³ for a modern fan gun at −4 °C wet-bulb) are the industry values collated on Wikipedia's snowmaking page.
Two framings are worth separating. The national percentages sound small (0.46% of Austria's grid) and are genuinely modest against, say, heating or heavy industry. But the resort-level concentration is what hits the P&L: at a single operation, snowmaking is a dominant, seasonally spiked load, and that is where the cost pressure lives.
Where does the energy actually go?
Snowmaking energy goes to three places: pumping water up the mountain under pressure, compressing air for the guns, and — for fan guns — driving the fans. The balance depends on the system: compressed-air ("air-water") guns spend most of their energy making air pressure, while fan guns spend it on the fan and internal compressor. Pumping is a large, often underestimated share because the water has to move uphill at high pressure.
The practical breakdown:
- Pumping. Moving large volumes of water from a reservoir up hundreds of metres of elevation against friction. This scales with vertical lift and flow, and it runs whenever the system is on.
- Compressed air. Air-water guns rely on a compressor plant; compression is energy-dense and a major line in older systems. This is why compressed-air efficiency (and heat recovery from compressors) is a standard target.
- Fans / internal compressors. Fan guns move a large air volume to atomise and throw the water; the fan and the small onboard compressor are the load.
Because these loads are largely fixed per hour of operation, the cost of the snow depends heavily on how much snow you get per hour — which is set by the wet-bulb temperature. That is the hinge for everything below.
How much of a resort's power bill is snowmaking?
In the build-up season, roughly half. Snowmaking is commonly around 50% of a resort's electricity bill and the majority of its total energy use in the October–January period when the base is being laid. Across the full year the share is lower, because lifts, buildings, and grooming run all season, but in the weeks that decide whether you open on time, snowmaking dominates.
| Metric | Figure | Source | |---|---|---| | Austrian snowmaking, per season | ~281 GWh (~0.46% national electricity) | Aigner et al. 2026 | | Canadian snowmaking, per season | ~478,000 MWh, 43.4 Mm³ water → ~42 Mm³ snow | Steiger et al. 2024 | | Share of resort electricity bill | ~50% (snowmaking-intensive resorts) | Industry / Grist | | Snowmaking as share of daily opex | ~17% (large Alpine resorts) | Vorkauf et al. 2022 | | Modern fan gun energy per m³ | ~0.7 kWh/m³ at −4 °C wet-bulb | Industry (Wikipedia) |
The 17%-of-daily-opex figure from Vorkauf et al. (2022) at large Swiss resorts is the number a CFO tends to fixate on, and it pairs with the electricity share to explain why energy efficiency is a board-level topic in snowmaking, not a technical footnote. The cost mechanics behind these figures are unpacked in the snowmaking cost breakdown.
Why does energy per cubic metre rise in marginal conditions?
Because a gun's output collapses as the wet-bulb temperature rises toward its limit, while its power draw stays roughly constant. Run the same compressor and pump for an hour at −8 °C and you get a lot of snow; run them for an hour at −2.5 °C and you get a trickle — for nearly the same energy. The last productive hours before a gun shuts off are, per cubic metre, the most expensive snow of the season.
This is the single most important thing to understand about snowmaking energy, and it is why the wet-bulb window is the master variable. The physics is laid out in the wet-bulb temperature and snowmaking guide: output is a steep function of how far below the freezing threshold the wet-bulb sits. As the climate warms, resorts spend more hours in that inefficient marginal band — which is exactly why Steiger's Canadian projection shows energy demand climbing 55–97% even to hold output flat. You are not making more snow; you are making the same snow in worse conditions, burning more kWh per cubic metre to do it.
How do resorts cut snowmaking energy?
Through five levers: efficient pumping (variable-frequency drives), compressed-air optimisation and heat recovery, choosing higher-efficiency guns, timing production into the coldest windows, and — the lever most efficiency guides omit — additive chemistry that raises snow yield per unit of energy in marginal conditions. The first four are mature engineering; the fifth is the newer chemistry frontier.
The conventional four are well covered in the industry:
- Pumping efficiency — variable-frequency drives match pump power to demand instead of running flat out.
- Compressed-air optimisation — right-sizing compressors and recovering their waste heat.
- Gun selection — modern fan guns and lances have cut per-m³ energy dramatically versus 2000-era equipment.
- Timing — concentrating production in the coldest hours, when kWh per cubic metre is lowest.
The fifth lever is the argument set out in chemistry as the missing fifth lever: a polymer additive that widens the productive wet-bulb window means you get usable snow at temperatures where the guns would otherwise be running inefficiently or switched off — improving the snow-per-kWh ratio precisely in the marginal band that is growing. DeepSnow's SL6733 targets a modelled +3 °C wet-bulb advantage at a 6–7.6 ppm dose, riding on the energy the guns already use rather than adding a new load. That distinguishes it structurally from a temperature-independent all-weather machine, which manufactures cold at a much higher energy cost — the comparison is in snowmaking additive vs all-weather machine.
What is snowmaking's carbon picture?
On a clean grid, modest per skier visit; on a dirty one, not. Aigner et al. put Austrian snowmaking at about 130 g CO₂ per skier visit — small, because Austria's electricity is relatively low-carbon. Where the grid is more carbon-intensive, the same kilowatt-hours carry more emissions, which is why the energy-efficiency levers double as decarbonisation levers.
The honest framing is that snowmaking's footprint is dominated by the electricity mix behind it, not by the water. The 130 g CO₂/skier-visit figure is a low number precisely because it sits on a clean grid; the Canadian study's 130,095 tonnes of CO₂ reflects a different mix and a much larger absolute output. Cutting kWh per cubic metre cuts both the bill and the emissions — which is the whole reason efficiency, and not just renewable procurement, belongs in the sustainability conversation.
The bottom line
Snowmaking is the load that decides your early-season power bill, and its cost per cubic metre is set by the wet-bulb temperature you are forced to work in. As warming pushes more of the season into the marginal band, energy per cubic metre climbs — which makes the efficiency levers, including the additive-chemistry one, more valuable each year, not less. The goal is not less snowmaking; it is more snow per kilowatt-hour.
If you want to model what a wider productive window would do to your snow-per-kWh in the marginal band, request a pilot or send us a message.
SL6733's +3 °C wet-bulb advantage is modelled and pre-commercial; EU lab pilots are targeted for the 2026/27 season. Energy and emissions figures are from the peer-reviewed and industry sources linked above and vary with grid mix, equipment, elevation, and wet-bulb conditions.