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About Ringneck Energy

  • Office Hours:

    8:00 am - 4:30 pm,  Monday-Friday

  • Corn Receiving:

    7:30 am - 4:30 pm, Monday-Friday

  • DDG Loadout:

    7:30 am - 3:30 pm, Monday-Friday

  • WDG Loadout:

    24/7

Fueling Opportunity in Onida and Rural South Dakota

Ringneck Energy was founded in 2014 to serve South Dakota producers, investors, and communities by turning local resources into powerful results. Headquartered in Onida, we produce high-quality ethanol, premium distillers grain, and valuable corn oil helping farmers grow their bottom line and contributing to American-made energy independence.

Ringneck Energy - About - Aerial view of the plant at night

Our Mission

To produce renewable energy that adds value to grain and livestock production, enhances the income of our investor partners, fosters a safe and rewarding workplace, and strengthens economic opportunity across our region.

What We Do

  • Ethanol Production

    We produce approximately 80 million gallons of clean-burning ethanol each year, supporting local, regional, and national markets.

  • Distillers Grain for Livestock

    Our premium wet and dry distillers grains deliver vital protein and energy to cattle and livestock producers across South Dakota and beyond.

  • Corn Oil

    We supply industrial-grade corn oil for biodiesel and other applications, extending the value of every bushel we process.

Explore our offerings to see how Ringneck Energy can support your farming or feed operation.

Our Roots Run Deep

Established on September 12, 2014, Ringneck Energy began with a bold vision: to build a 70-million-gallon dry-mill ethanol plant that supports local farmers, fuels the U.S. economy, and strengthens the future of rural America.

Supporting Local Producers & Investors

  • 40+ Local Jobs Created
  • We’re proud to employ 40–45 hardworking South Dakotans and use local contractors whenever possible.

Value for Farmers

Our facility gives area corn growers and livestock producers more profitable market access driving returns on every acre and herd.

Backed by Local Investors

Built with community capital and local support, Ringneck Energy remains deeply committed to transparency and long-term value for shareholders.

Connect with us today to learn how you can invest in the future of renewable energy.

Better Fuel for a Stronger America

Energy Independence

By using locally grown corn, we help reduce America’s reliance on foreign oil.

Cleaner Air

Ethanol burns cleaner than gasoline, improving air quality without sacrificing performance.

Efficient Production

With a USDA-estimated +34% net energy gain, our process delivers more energy than it consumes benefiting producers, consumers, and the environment.

Let’s Build a Stronger Rural Economy Together

Whether you’re a corn grower, cattle producer, fuel distributor, or local investor, Ringneck Energy is here to help you succeed.

Learn More about Investment opportunities
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