Spanish sustainable energy company Solarig has announced plans to invest more than PLN 1.5 billion ($416–420 million) to expand its biomethane operations in Poland through its renewable gases division, Biorig.
The investment will establish a biomethane platform with a combined annual production capacity of approximately 1 TWh, enough to meet the energy needs of roughly 400,000 households. Over the next five years, Solarig aims to develop and operate more than 20 biomethane plants across seven Polish regions.
The company’s growth strategy in Poland combines acquisition of ready-to-build brownfield projects from local developers with greenfield developments for new facilities. Solarig plans to collaborate closely with local partners, leveraging its experience from constructing and operating biomethane plants across Europe.
Produced biomethane will be supplied to industrial customers, particularly energy-intensive manufacturers, via gas grid injection and long-term purchase agreements, ensuring stable revenue streams.
The move aligns with Poland’s push to diversify gas supply and reduce reliance on fossil natural gas, supporting EU decarbonisation objectives under the REPowerEU plan. Despite Poland’s large agricultural sector, its current biomethane production lags behind Western European markets. The Polish Economic Institute estimates the country could generate up to eight billion cubic meters of biomethane annually, covering around 46% of current natural gas demand.
Piotr Tomasz Kosior, Country Manager at Biorig Poland, said: “Poland represents a strategic opportunity due to the great potential of its market. Regulatory momentum now encourages the installation of biomethane plants, making this a key moment for expansion.”
Solarig entered the Polish market in 2023 and has since developed a local platform for project origination and development. Its current portfolio includes 300 MW of solar PV capacity and over 1.1 GW of battery energy storage projects in development. Across Europe, Biorig is developing more than 60 biomethane facilities in Spain, Italy, and Poland, expected to generate around 5 TWh per year of renewable energy once operational.
Poland’s first industrial-scale biomethane plant opened in September 2025, with the 45 MW Sudzuker facility connected to the national gas network.