Biogas 21 – Plaxton Bridge

Project Description

Plaxton Bridge, located near Hull (UK), is Solar 21’s first anaerobic digestion project. The plant will produce between 4 million and 5.4 million cubic metres of biomethane gas, enough for 3,700 homes.

Project Status
The construction of our first anaerobic digestion (AD) plant is progressing well. We are delighted to announce that Northern Gas Networks confirmed the plant achieved gas to grid on January 27th 2020 and the EA Permit has also been issued. This follows an intense period of works led by Neil Wright, Solar 21’s on site Project Manager, coordinating the efforts of the primary contractors BTS Biogas and Ashcourt to achieve gas to grid by the end of January 2020. The team will now focus on completion of remaining site works by civils contractor, Ashcourt, and on ramping up to full operation and performance over the coming months. Operations and Maintenance will be contracted to the primary contractor BTS Biogas.

Please see our latest project progress report for further information.

How is Biogas Produced?
Anaerobic digestion is a process that produces biogas, a high-energy gas made up of mainly methane (CH4) and carbon dioxide (C02) from the breakdown of organic material in the absence of oxygen. To make it usable in the national gas pipeline, the biogas must undergo a purification process that removes other gases and impurities, turning it into what is called biomethane (a gas composed of 99% methane).

Government-backed Revenue
We have signed a contract with Ørsted for gas offtake and green gas certificates. This means the plant receives income for gas produced as well as a payment for green gas under the Green Gas Certification Scheme. Headquartered in Denmark, Ørsted employs 6,500 people and had a revenue of $11.4 billion in 2018. Ørsted develops, constructs and operates offshore and onshore wind farms, solar farms and energy storage facilities, bioenergy plants and provides energy products to its customers. It was recently ranked the most sustainable company in the world. The plant will produce 2MWe (2MW equivalent) of gas which will be exported directly into the gas grid. As well as the income from gas offtake and green gas certificates, the plant will take advantage of the non-domestic Renewable Heat Incentive (RHI). The RHI is part of the UK government’s clean energy strategy, designed to stimulate the development and growth of renewable heat technologies. Under the proposed scheme, the UK government will pay an index-linked incentive, guaranteed for a period of 20 years, for the heat and energy produced.

Project Videos

Latest News

Plaxton Bridge achieves gas to grid

Solar 21 is delighted to announce that gas to grid was achieved last week at its Plaxton Bridge biogas plant near Beverley in Yorkshire. Our thanks to Neil Wright, Solar …read more

Climate Action Plan

Our response to the DCCAE’s Climate Action Plan

The government must act to encourage renewable energy development in Ireland. On May 9th 2019 Ireland became the second country in the world to declare a climate and biodiversity emergency. …read more


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