At Roeslein & Associates, we believe in a sustainable future powered by renewable energy. With our extensive expertise, cutting-edge technology, turnkey solutions, and unwavering commitment to innovation, we are leading the way in transforming the global energy landscape. Generating renewable natural gas (RNG) doesn’t have to be a complicated process. With over three decades of experience helping clients through project development, engineering, manufacturing, construction, operations, and maintenance, Roeslein is ready to partner with you. Join us in our renewable energy revolution.

The Renewable Energy Revolution

The world is at a pivotal moment in history as we transition from traditional fossil fuels to renewable energy sources. This shift is not just a trend; it’s a necessity. Climate change, resource depletion, and environmental degradation require us to embrace sustainable alternatives. The renewable energy market is at the forefront of this transformation, and Roeslein & Associates is here to guide you through it.

Renewable Natural Gas Production Systems from Roeslein Alternative Energy


The Roeslein Advantage

  • Experience on more than 40 anaerobic digestion systems across Dairy & Swine facilities.
  • Generating 1,000,000 dekatherms on an annual basis.
  • Operating expertise to maximize biogas capture for manure & landfill processes.
  • Detailed knowledge of RNG tube trailer truck loading and unloading facilities.
  • Comprehensive list of OEMs with longstanding relationships.
  • Award-winning data management systems for both on-site and remote operations.
  • Specialized in orchestrating the business, finance, and technical aspects of all phases of project development to offer a turnkey solution that allows clients to focus on their core business.

Understanding Anaerobic Digestion

How does it work?

By placing covers over manure collection systems, we are removing greenhouse gas emissions equivalent to removing more than 25,900 passenger vehicles off the roads. Talk about making an impact.

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What are the benefits?

Covering manure collection systems aids in protecting human health by reducing pathogens through the anaerobic digestion process and provides $120 million of investment into the local economy.

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Who can make a difference?

The process diversifies farm revenue by allowing farmers to enter into multiple industries while reducing operating costs by producing renewable natural gas that can be used or sold at market prices.

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Livestock waste is a significant source of methane gas. Roeslein creates a variety of products that control this gas through cleaning, pressurizing, dehydrating, and preparing it for injection into the natural gas pipeline. Learn more about Roeslein’s renewable energy products here.

Anaerobic Digestion Diagram

Project Highlight

With the goal of giving farmers the opportunity to be in the energy market, Roeslein began working with Smithfield Hog Production of Missouri on their Northern Farms; this would be a $100 million renewable biogas project. The project centered on gathering hog manure into covered lagoons and capturing the methane gas released through the natural anaerobic digestion process. The captured gas would then travel through equipment for cleaning and compression in preparation for injection into the pipeline. Roeslein’s role as a developer in the project scaled from preliminary engineering to detailed designs, modular fabrication, procurement, construction, operations, commissioning, start-up & maintenance of the facility.

Renewable Natural Gas Production | Covered Lagoons

Join Us in Shaping the Future

Renewable energy isn’t just a market we serve; it’s a movement. We’re driving the renewable energy revolution forward, and we invite you to be part of it. Together, we can create a cleaner, more sustainable world for future generations.

Ready to embark on your renewable energy journey? Contact us today to explore how Roeslein & Associates can help you navigate the renewable energy market and build a brighter future.

Renewable Energy Products

Roeslein Services

Business Development Team

John DeMoulin VP, Business Development & Marketing

Joe Guehring Business Development Manager

Eric Bancks VP of Engineering, RAE

Robert Hayes Operations Manager, South America

Rob Ellwood-Digel Senior Business Development Manager

Joe Miller Business Development Manager