Capstone Green Energy Corp. received a follow-on order for one of its microturbine systems at a sewage treatment plant in Busan, South Korea.

The Van Nuys alternative energy manufacturer is expected to commission the 800-kilowatt energy system expansion in September of next year at the Noksan Sewage Treatment Plant.


The order was received through CY Tech, Capstone’s distributor in Korea.


Ohjun Kwon, project manager of Busan Noksan Sewage Treatment Plant, said that the original Capstone energy system that was installed has been working so well, it was decided to invest in expanding its capacity.


“We chose Capstone’s technology for its strong performance, reliability, low noise and minimal maintenance intervals, which have proven successful operation in several domestic sites,” Kwon said in a statement.


The Noksan site, which is capable of processing sludge at 160,000 cubic meters per day, will use the biogas produced in the digestion process as fuel to provide on-site power for the 15-building treatment facility as well as the heat required for the digester, Capstone said in a release.


Darren Jamison, chief executive of Capstone, said that wastewater treatment plants like the one in Busan have an opportunity to take advantage of their methane-rich biogas, which offers a free, renewable fuel source for producing heat and electricity.


“Not only does it help reduce operational costs, but it also provides an important step forward in the fight against climate change by eliminating waste gas, which could otherwise be a global warming pollutant,” Jamison said in a statement.


The announcement on the Korean project was made on Monday. On Wednesday, shares of Capstone (CGRN) closed up 21 cents, or 4.4 percent, to $4.98 on the Nasdaq, on a day when that market closed up a fraction of a percent.