paso_robles_locationWhat is PRECO™?

PRECO (Paso Robles ECOsystem) is a proposed project, designed to produce 0.5 million gallons of renewable ethanol from a variety of feedstocks available in the Paso Robles area – including waste trub from nearby Firestone Walker Brewery and winery wastes from the over 310 wineries in the immediate area.


Small Scale, Big Impact

Local-scale technologies are pre-commercial and require an advanced, groundbreaking solution, like ours, to compete with traditional industrial-scale centralized production facilities, which our technology does. The successful demonstration of Greenbelt’s local-scale technology will create opportunities for small- and medium-sized agricultural processers to cost-effectively transform their residue into value-added products and to contribute to the state’s job creation and climate goals.

Job Opportunities

Historically, ethanol facilities have been large centralized facilities that receive large volumes of one main feedstock (e.g. corn), convert it to ethanol, and market that ethanol to oil companies for blending into the national fuel supply. California can substantially benefit from the increased deployment of local-scale renewable ethanol conversion technologies. These technologies offer economically-viable solutions to small and medium sized businesses which provide significant economic benefits including:grapes_beer_to_ethanol

  • Reduced expense for the generator of the waste product;
  • Reduced cost and impact of transportation of the wastes for disposal;
  • Creation of local clean energy jobs;
  • Creation of products available for local consumption;
  • Reduced cost and impact of transportation of products replaced by the newly created products;
  • Reduced impact on the environment including lower emissions due to the sizing of projects at the local scale;
  • Reduced greenhouse gas emissions due to replacement of high carbon fuel with low carbon renewable fuel.

Greenbelt has identified four primary sectors for local-scale renewable ethanol growth: 1) agriculture, 2) breweries, 3) wine production, and 4) urban food waste. Greenbelt conservatively estimates the ability to develop over 220 units and produce more than 170 million gallons of renewable ethanol a year by targeting local-scale production that would otherwise not be utilized for ethanol production.