December 16, 2025 [Reuters]- Spanish renewable developer Solarig will invest over 1.5 billion zloty ($415 million) to build and operate more than 20 biomethane plants in Poland over the next five years, it said on Monday.

The investment will be deployed through the company’s biomethane subsidiary Biorig, which is also developing similar portfolios in Spain and Italy.

The facilities, to be deployed in several regions of Poland, will generate 1 terawatt hour of gas per year, the company said, enough to cover consumption for 400,000 households.

Biomethane can be produced from organic waste like food scraps or damaged crops.

With 1.3 million farms, the second most in the European Union, Poland offers vast potential for biomethane production. Warsaw is planning a system of auctions for financial support for biomethane producers that would sell output to the gas grid.

“Poland represents a strategic opportunity due to the great potential of its market: this is a key moment, thanks to regulatory momentum that encourages the installation of biomethane plants,” Piotr Tomasz Kosior, Biorig country manager for Poland, said in a statement.