Inside Mongolia’s Dash for Winter Solar Power to Beat Upcoming Blackouts

Mongolia is fast-tracking a massive 240-megawatt solar energy expansion across five provinces to shore up its grid before the winter freezing temperatures trigger blackouts.

Photo by Nuno Marques on Unsplash

The cabinet ordered to compress a development cycle that typically spans a couple of years, covering permitting, grid studies, procurement, and construction, into six months by fast-tracking all stages simultaneously. The 2025-26 winter made the gamble unavoidable. Damage to the aging Soviet-era power and heating plant triggered severe rationing across Ulaanbaatar, with rolling blackouts lasting up to two hoursduring freezing peak hours. The political cost of a repeat is too high to absorb.

Mongolia's cold is actually an asset for solar power generation. PV cells gain efficiency as temperatures fall, because lower heat reduces semiconductor resistance. Panels mounted at 30 to 60 degree angles shed snow naturally, and the white steppe ground reflects additional light back onto the panels through albedo, boosting effective irradiance. 

The real winter risks are mechanical, not generational. Battery storage systems require thermal insulation to avoid freezing, and panel frames must withstand heavy snow loads and high steppe winds without warping. 

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