The city of Gdansk on Poland’s northern coast has activated a combined heat and power plant run on biogas.

Polish Gdansk Water Infrastructure Company announced it had put online the $7.2m plant on Tuesday.

The plant uses biogas derived from sewage sludge, a by-product from wastewater treatment, at a wastewater treatment plant in the city, the company said at a press conference.

The CHP plant produces an average of more than 1,000 MWh of power and more than 3,700 GJ of heat each month, news website Wnp.pl reported on Tuesday, citing the company’s president Jacek Skarbek.

The power is being sold to the grid, while the heat is being used by the wastewater treatment plant. In the future, the electricity output will be used to power a waste incinerator at the wastewater treatment plant, Skarbek said.

The project, which was launched in 2010, has received a European Union financing, covering 40 per cent of its cost.

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