• First CARB Swine
  • Pathway Registration
  • Lowest CI (Carbon Intensity) Score for
  • CARB Swine Pathway Ever Achieved

Anaerobic Digestion

Roeslein Alternative Energy uses a proprietary system of technologies to capture gases emitted from animal waste through the natural process of anaerobic digestion.

Anaerobic digestion consist of a series of biological processes that break down biodegradable material, which in the case of RAE, is livestock manure. This process occurs in the absence of oxygen.

Gas Cleaning
Farm Aerial

The biogas created is mostly methane (CH4) and carbon dioxide (CO2), with very small amounts of water vapor and other gases. The carbon dioxide and other gases are removed as they pass through our complex gas purification systems. Leaving only the methane, which is the primary component of natural gas. Thus, RAE is creating renewable natural gas (RNG).

How RNG is used depends on its quality. At RAE, our gas has received the lowest carbon intensity score ever awarded by the California Air Resources Board (CARB), making our gas highly sought after as a clean transportation fuel. The remaining solids can be used as natural fertilizer and the water for irrigation.

Additional benefits of capturing these naturally emitted gases are:

  • A significant reduction of harmful greenhouse gases emitted into our atmosphere
  • Cleaner air with a nearly complete elimination of odor for surrounding residents
  • Keeping rainfall out of the lagoons so it does not have to be cleaned using carbon sourced electricity before being land applied

Ready to Work With RAE?

Roeslein Alternative Energy welcomes the opportunity to work with you. Have questions? Ready to schedule a meeting? Contact a member of RAE’s business development team to start planning your energy production solution today.