Pioneering Sustainable Energy Solutions
Boldly Advancing Clean Energy Technologies For A Greener Tomorrow
Reliance on traditional fossil fuels and outdated energy practices are harming our planet and impacting our future.
At Calgren, we’re redefining the sustainable renewable fuel and energy landscapes. We conquer climate challenges by producing clean energy and innovating solutions that reduce greenhouse gas emissions. With cutting-edge technologies and strategic alliances, we’re not just meeting the moment—we’re shaping the future. Discover how we’re making a real, lasting impact on our environment and communities.
MMBtu/Year Renewable Natural Gas Produced
Gallons of US Ethanol Produced Annually
How We're Innovating
At Calgren, our energy solutions begin right at the farm, where corn is grown and harvested to produce ethanol. This ethanol production generates valuable co-products like Wet Distillers Grains (WDG) and corn oil, which are then used as nutritious feed for local dairy cows. The cows, in turn, play a vital role in our interconnected system by providing manure, as a feedstock to our anaerobic digester cluster. The cluster captures biogas which is upgraded to renewable natural gas (RNG) for injection into the utility pipeline, where it fuels medium and heavy-duty vehicles. Additionally, mixed waste biogas from other organic materials is utilized as process fuel, powering our facility and reducing reliance on external energy sources. This seamless integration of corn, ethanol production, dairy farming, and renewable energy showcases our commitment to creating a more sustainable, closed-loop system. Calgren is leading the way in shaping a cleaner, more efficient energy future.
Ethanol Production
Calgren’s ethanol plants convert corn into 116 million gallons of ethanol annually, reducing dependence on imported oil and cutting down harmful emissions. As pioneers in low carbon footprint ethanol operations in the country, we are making significant strides in sustainability.
Renewable Natural Gas
Calgren’s growing cluster of nearly twenty dairy manure digesters captures dairy waste methane emissions and converts this biogas into low carbon renewable natural gas (RNG), reducing harmful methane emissions and providing clean energy for transportation.
Calgren also uses mixed waste feedstocks in a dedicated production digester to create biogas that is used as process fuel in our ethanol and biodiesel production reducing our use of fossil natural gas.
Carbon Capture, Utilization & Storage
Calgren is committed to advancing the fight against climate change through cutting-edge carbon capture, utilization and storage (CCUS) solutions. Today, we utilize our production CO2 in various industries, including food and beverage.
Calgren is looking to the future to fully sequester our production CO2. We are in a public/private partnership with the Department of Energy CarbonSAFE program to develop a CCS project.
By integrating CCS solutions into our operations, we significantly reduce our carbon footprint and contribute to a cleaner, more sustainable future.
Sustainable Co-Products
At Calgren, we are dedicated to a zero-waste philosophy that transforms co-products into valuable resources, contributing to a more sustainable and efficient system. We:
- Produce more than 700,000 tons/year of Wet Distillers Grains
- Produce nearly 40 million pounds/year of corn oil
- Capture approximately 90,000 metric tons/year of CO2
Through these efforts, we minimize waste and enhance sustainability throughout our operations and beyond.
Biodiesel
We produce biodiesel from waste oils, such as used cooking oil and tallow. Our biodiesel plant design is the first of its kind using a continuous supercritical process. This renewable fuel provides a cleaner alternative to conventional diesel and reducing greenhouse gas emissions in today’s transportation industry.
How Cows Are Helping Combat Climate Change
Our quest for sustainable energy features an unexpected ally: the cow.
Nestled in the heart of California’s dairy country, our state-of-the-art dairy digesters transform what was once considered waste into a powerful force for good. By capturing methane from cow manure – a 28 times more potent greenhouse gas than CO2 – we’re converting it into clean, renewable natural gas that fuels progress. This process not only drastically reduces harmful emissions but also supports local dairy farmers, turning a challenge into an opportunity for growth and income diversification. Every MMBtu of biogas we produce is a step towards a more earth-friendly future, proving that even the most humble beginnings can lead to extraordinary outcomes.
We’re not just imagining a better tomorrow – we’re building it, one cow at a time.
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