EnviTec Biogas reaches significant US milestone
With the recent commissioning of its largest anaerobic digestion (AD) plant in the United States (US) to date, German biogas specialist EnviTec Biogas AG – through its wholly owned subsidiary EnviTec Biogas USA Inc. – is strengthening its partnership with SJI Renewable Energy Ventures and local suppliers.

Located in South Dakota (SD), the plant has been processing over 300,000 (US) gallons (≈1,100 m3) per day of manure from more than 9,500 dairy cows since the beginning of 2025.
It is expected to produce 483 standard cubic feet per minute (scfm) of renewable natural gas (RNG) (778 Nm³/h biomethane), equivalent to around 177,000 million BTU per year.
Significant milestone
This new facility marks a significant milestone for EnviTec Biogas, which has been pioneering the biogas industry in the US since the commissioning of its first American project in 2012.
This facility marks the fifth of a total of 15 biogas plants we are developing for our client, a leading company in renewable energy and sustainable solutions, explained Lars von Lehmden, CEO of EnviTec Biogas USA Inc.
Eight of these plants are on farms operated by a leading diversified agribusiness in the US.
This new facility is a true win-win for both business and the environment. Not only does it convert organic dairy waste into renewable biogas, but it also helps reduce the overall carbon footprint of dairy farming, added Timothy Logan, President of EnviTec Biogas Construction LLC.
Local tank manufacturing and comprehensive service offerings
Beyond this milestone, EnviTec Biogas stands out as the only provider in the United States market offering high-quality, locally manufactured concrete tanks.
This is possible through a sustainable partnership with Collins Precast LLC, a leading producer of precast concrete components and buildings in the Upper Midwest.
Our concrete tank design is the first of their kind to be approved in South Dakota, Timothy Logan said.
In addition to constructing the integrated biogas and biomethane upgrading facility, the client has also signed a multi-year service contract with EnviTec to provide technical scheduled services, service on demand, 24/7 hotline support, and biological services from the office/warehouse in Watertown, South Dakota.
Especially during the commissioning and ramp-up phase, we have been providing weekly sampling and analysis through our laboratory in Watertown, Timothy Logan explained.
With the completion of the fifth project in this partnership with SJI, EnviTec Biogas has now successfully delivered one-third of the planned portfolio for its client.
Three additional projects recently completed cold commissioning and are transitioning to the ramp-up stage with EnviTec’s first Minnesota projects being brought online later this year.
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