: "This fact blew my mind. "Carleton College in Minnesota spent $42 million on its geoexchange, which was completed in 2021, and expects to break even within 18 years. The system has cut the school’s annual natural gas use by about 70 percent and..."

@dmhirsch.bsky.social

This fact blew my mind. "Carleton College in Minnesota spent $42 million on its geoexchange, which was completed in 2021, and expects to break even within 18 years. The system has cut the school’s annual natural gas use by about 70 percent and...

Feb 12, 2024 at 15:20 UTC

3 replies 1 reposts 2 likes

@dmhirsch.bsky.social
[ View ] Feb 12, 2024 at 15:20 UTC

has cut 25 years off the college’s plan to be carbon neutral, which is now expected by 2025, Sarah Fortner, Carleton’s director of sustainability, wrote in an email."

www.nytimes.com/2024/01/23/c...

1 replies 0 reposts 1 likes

Daniel Feldman @dfeldman.bsky.social
[ View ] Feb 12, 2024 at 16:41 UTC

Neat! Geothermal isn't very popular in Minnesota because you still need a secondary gas system for the coldest days. A little further south in Iowa and Nebraska it's the default for practically every new setup.

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David Sacerdote @davidsacerdote.bsky.social
[ View ] Feb 12, 2024 at 15:30 UTC

Photos from a tour of the completed facility look awesome

bsky.app/profile/jess...

0 replies 1 reposts 3 likes