The InnoSepra biogas upgrade technology can convert raw biogas to high purity biomethane in a single step with a significantly lower capital and operating cost.  Potential savings of more than 50% in the gas upgrade cost can result in more than 25% reduction in the cost of renewable power generation and more than 30% reduction in the cost of producing Renewable Natural Gas (RNG).  The technology produces high purity natural gas (>98% purity) at a very high recovery (>98%).  It has been demonstrated in a dairy farm and will be demonstrated at the pilot scale at a wastewater plant and at a landfill using the California Energy Commission funds.