A biorefinery is a facility that integrates biomass or biogas conversion processes and equipment to produce fuels, power, heat, and value-added products, such as food commodities from wastes. The biorefinery concept is analogous to today's petroleum refinery, which produce multiple fuels and products from petroleum.

The International Energy Agency Bioenergy Task 42 on Biorefineries has defined biorefining as the sustainable processing of biomass into a spectrum of bio-based products (food, feed, chemicals, materials) and bioenergy (biofuels, power and/or heat).

By producing multiple products, a biorefinery takes advantage of the various components in biomass and their intermediates therefore maximizing the value derived from the biomass feedstock.

Following this concept, Ludan Renewable Energy offers its customers the broadest possible range of options for the valorization of its by-products. The transformation of a waste in raw material is one of the most economically attractive due to the high cost of traditional feeds.

In addition, a biogas plant is an installation with interesting synergies for the production of feed materials, such as cereal dehydration, bagasse, fruits or vegetables, or rendering plants for the production of meat meal and fat.

Ludan has built the first biogas based biorefinery in Spain that combines biogas generation, fertilizer production and the production of animal feed products, and is developing several additional projects in this area.