(CNN) — How do you turn a ski resort "green?" The easy answer is to wait until summer.
But environmentally green? That's more complicated, and the paradox facing the ski industry right now.
Winter sports fans are drawn to the mountains for the pristine wild environments, energizing views, pure air and hearty fun in the snow.
But the energy needed for mountain resorts comes at a price, threatening the very premise of a pastime wedded to the natural world and its winter bounty.
Ski lifts need power to keep turning all season, resort buildings need energy, snow groomers need fuel and guests need to travel, often creating large carbon footprints from long flights.
And faced with the climate crisis and rising temperatures, resorts now need water-thirsty snow cannons to ensure enough of the white stuff for the business to operate. And that doesn't even factor in the physical and visual impact of development on the alpine environment.
The consequences could be devastating for the planet, and many low-level ski resorts are already under severe threat because of a lack of snow.
But thankfully, resorts across the globe appear sincere about helping tackle the climate crisis, with hundreds of millions of dollars being spent on myriad green initiatives, from small-scale in-resort activations to long-term systemic change.
Pledges
Whistler is among North American ski resorts whose operators have agreed to reduce energy use.
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"It's a worldwide responsibility to do something," said Gilles Delaruelle, the head of tourism for Courchevel, one of French skiing's top resorts and part of the vast Les 3 Vallees area.
"We've seen there is climate change on the mountains, we've seen different temperatures, we've seen new highs on the top of the mountain, we saw the snow not coming like in the past at the same period and at the same level. There is a lot of change and we have to take care of that.
"It's not a marketing position, it's a responsibility that everyone needs to have for the next generation. If we don't protect the nature, we won't have skiing for the future."
"The industry depends utterly on a stable climate and a pristine natural world," said Auden Schendler, senior vice president of sustainability for the Aspen Skiing Company. "That's what we're selling so it's obvious we should have a role in protecting that.
"We have to run our lifts, we have to heat our hotels and restaurants and we have to make snow. In all of those applications you say, 'How can we do those most efficiently?'"
Schendler said that while on-site activations are "good business," it is advocacy, political pressure and movement building that are Aspen's main weapon in combating climate change, using the fame and influence of the resort to tackle the issue closer to the source.
"The major impact of a ski resort on climate would be remaining silent on climate," said Schendler. "If you care about this issue, your obligation is not so much to reduce your energy use, it's to make sure your trade groups are pushing on the politics of climate, it's to have your CEO educate the public and your guests, that's the opportunity.
"Ski resorts have big impacts in energy use, transportation and operations, but if you fix the energy system through your advocacy you fix those problems."
Red herring
Work is underway to switch Aspen to 100% renewable energy by 2030.
Jakob Helbig/Image Source/Getty Images
"It took forever, it was difficult, but that changed not just us but our competitors," said Schendler. "The point is, that's big-scale change and that's not the kind of thing you typically hear sustainability executives talking about."
Schendler, though, warns that carbon neutrality can sometimes be a red herring as paying for schemes to offset emissions doesn't achieve systemic change.
In Europe many ski resort operators have been using 100% green energy for a number of years, including St. Anton, Lech-Zurs, Seefeld and Solden in Austria, Les 3 Vallees, Val d'Isere, La Plagne and Les Arcs in France, Pyha and Ruka in Finland, and Laax and Saas-Fee in Switzerland.
Grooming
A hybrid green snow groomer clears snow in Val Thorens, in the French Alps.
Jean-Pierre Clatot/AFP via Getty Images
The energy use of resort towns, as opposed to the operations side, is often the biggest contributor to the overall carbon footprint, but high on the list of emissions is the snow-grooming service, in which a fleet of specialist machines smooth down the runs each night to make for a better skiing and snowboarding experience.
As such, many resorts are working with grooming-machine manufacturers to trial alternative sources of fuel as well as next-generation snow groomers with hybrid diesel-electric, electric or hydrogen engines.
The group, which is exploring electric and hydrogen groomers with French manufacturer CM Dupon as part of a pledge to be carbon neutral by 2030, says the HVO fuel will lead to a reduction of 9,900 tonnes of CO2 equivalent or 72% of the direct carbon emissions of all its mountain activities excluding electricity. CDA will also educate groomer drivers and lift operators in the most efficient ways of operating to save fuel and energy.
The Swiss resort of Zermatt pays for more expensive sulfur-free "eco speed" diesel for its fleet of working machines, including 29 groomers, which adds about CHF 40,000 each year ($41,000) but generates 11% less carbon monoxide and reduces the concentration of hydrocarbons by 15%.
SATA, the lift company for Les Deux Alpes and l'Alpe d'Huez in France, announced in January 2022 it will partner with Green Corp Konnection (GCK) to convert five groomers and three buses into hydrogen, while Taos Ski Valley in New Mexico, says it will be the first US resort to introduce an all-electric groomer.
"We have the greenest cats available but it's a niche technology so we're a little bit at the mercy of manufacturers," added Schendler. "The play is to get off diesel and move to electric maybe, but probably more likely hydrogen. That technology will arrive but it's not there yet at a large scale."
Snowmaking
A snow gun in use at southern France's Font-Romeu ski resort.
Raymond Roig/AFP via Getty Images
Snowmaking is the third major pillar of ski resort operations, necessary to supplement nature's contribution and ensure runs into resorts and other busy areas have ample coverage.
It works by spraying a high-pressure mist of water into cold air to freeze into snow crystals. Some areas also use a biodegradable nucleating agent or organic particle on which an ice crystal can form more easily.
Val d'Isere's geography and altitude, with runs ranging from 1,800 meters to over 3,000 meters, means it can open from November through to May, but there are still 900 cannons covering 40% of the ski area, operated by a vast central "snow factory," the largest artificial snowmaking facility in Europe.
"This is an area that we have been looking into for several years now, and it requires real expertise," says Aurelie Leveque, Operations Director for Val d'Isère Téléphériques.
"Snow is produced using only water, compressed air and negative temperatures, and when the snow melts, the water goes back into the environment.
"The process doesn't require any chemical products or additives, and the water that we use comes from the drainage basin that flows into the Isère River, which is filtered before being sent to our snowmaking network."
Critics suggest snowmaking is a drain on diminishing water resources and energy, with artificial reservoirs creating deforestation, but Schendler suggests the positives outweigh the negatives.
"I'm not really a proponent of snowmaking, I don't love it, but it's part of the business and you have to do it as efficiently as you can," says Schendler.
"Snowmaking is maybe 10% of total energy use on an annual basis. The total water use is a teeny portion of the watershed. It has gotten 10-fold more energy efficient over the last decade because the technology is there.
"Going forward I don't see us using more energy to make snow. The reason it's necessary is you have to be able to open your door at a certain time."
The big, green picture
Courchevel has more trees now than when the resort was built in 1946.
Franck Fife/AFP via Getty Images
Many resorts are now taking a holistic view of their social, economic and environmental impact, with comprehensive sustainability programs in place, from safeguards over the impact on the fauna and flora of a region, to the removal of obsolete lift installations, to limiting food miles in the resort restaurants.
In Courchevel, there are more trees now than when the resort was first built in 1946, while Val d'Isere was recently awarded the French Flocon Vert sustainability certification, is making big strides in the conservation of endangered black grouse.
However, resort expansion and linking neighboring ski areas to form mega resorts has become a modern trend, motivated by commercialism but often highly controversial.
The other significant elephant in the room when assessing the environmental impact of ski resorts is the huge carbon footprint of visitors to ski resorts, notably foreigners arriving by emission-heavy flights.
A recent study from the French ski resorts of La Clusaz, Le Grand Bornand and Tignes, found that on average 52% of an individual's carbon footprint for a day's skiing came in travel to the resort.
Overall, it seems sustainability is far more than just a buzzword in the mountains, but many green projects are just the tip of the global iceberg.
"Are we winning? No. That's self-evident," said Schendler. "You've got to reverse global CO2 emissions and bend the curve down and that's not happening, so we've got more work to do."
Five eco-friendly resorts
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