Cross-Shaped Solar Trees Power Austrian Ski Resorts

Imagine solar panels shaped like trees, standing tall on snowy mountaintops and thriving in conditions that would shut down conventional systems.

That's exactly what's happening in Sölden, Austria, where 800 innovative "solar trees" are being installed at altitudes up to 10,000 feet. The 6.3 MW system will generate 28 gigawatt-hours annually, enough to power three entire ski resorts for a third of the year.

Traditional solar panels struggle in Alpine conditions. Snow piles up on flat surfaces, blocking sunlight. Extreme winds create unpredictable drifts. Steep terrain makes installation expensive and complicated.

SolarEdge and Helioplant solved these problems with a simple but brilliant design. Their cross-shaped structures look like flagpoles with four wings, each holding 15 to 16 solar panels that capture light on both sides.

The cross design creates air turbulence even in light winds, preventing snow from accumulating and blocking the panels. Snow that falls around the base actually helps by reflecting extra sunlight onto the underside of the modules, boosting energy production through what scientists call the albedo effect.

The companies already proved the concept worked. In 2023, they installed 12 solar trees beneath the Tiefenbach glacier that powered a ski lift for an entire season, dramatically reducing grid electricity use.

SolarEdge's advanced technology tackles another challenge. The tree-like structure creates more shade on individual panels than flat installations, which normally kills efficiency. Their power optimizers ensure each panel performs at its peak regardless of shading on neighboring panels.

The Ripple Effect

This breakthrough opens up clean energy possibilities for 6,000 ski resorts worldwide, most located in mountainous regions where conventional solar fails. These resorts consume massive amounts of electricity for lifts, snowmaking, and facilities, often in remote areas with limited grid access.

Florian Jamschek, Helioplant's co-founder, emphasizes that their system delivers reliable clean energy exactly where it's needed most. Patrick Janak from SolarEdge notes they're unlocking an entirely untapped market with superior economics.

The system completes in the second half of this year, transforming how mountain communities power themselves while protecting the pristine Alpine environment that attracts visitors in the first place.