Ski destination giant Vail Resorts expects its 34 US resorts to be 93% powered by renewable electricity by 2023.

The pledge came as the company, with 37 resorts worldwide, revealed that it had cut waste to landfill by 50% almost a year ahead of schedule.

It has agreed to source energy from a giant solar project west of Salt Lake City to provide all electricity for Park City Mountain, the largest US ski resort.

A 12-year agreement has also been struck to purchase power from a large scale wind farm.

At the same time, more than $18 million has been donated 309 non-profit organisations as support during the Covid-19 crisis and $1.8 million to staff as emergency relief.

The developments came as part of the group’s commitment to each a zero net operating footprint by 2030 as it champions the fight against global warming.

Chairman and chief executive Rob Katz said: “Despite this year’s unexpected challenges due to Covid-19, our values have not wavered.

“That includes Do Good, our commitment to preserving the environment and supporting our employees and the communities in which we operate.

“We’ve made great strides in reaching our bold sustainability goals, including perhaps our most challenging pillar of Commitment to Zero – zero waste to landfill.

“Across the company, it has been an inspiration to watch our employees stay focused on achieving our sustainability goals while working hard to keep our guests and each other safe.”