Portland-based composting service Garbage to Garden won a $100,000 grant Friday night in the season one finale of business competition TV show “Greenlight Maine.”

Garbage to Garden was one of three finalists that competed in a live event Friday at Merrill Auditorium in Portland. The other two finalists were Portland-based national parks guide app-maker Chimani and biobased products developer Revolution Research, located in Orono.

Also on Friday, Greenlight Maine said it has received a $100,000 grant from the state Department of Economic and Community Development to help fund future seasons.

“Greenlight Maine” was created by Brian Corcoran, CEO of Shamrock Sports & Entertainment; Nat Thompson, former producer and owner of WCSH-6; and Con Fullam, an executive TV producer and music composer. Twenty-six companies are selected each season to compete against each other in a weekly show that airs September through June on WCSH-6 and WLBZ-2. Corcoran said the show is in talks with potential donors to double the grand prize to $200,000 for its upcoming second season.