Ireland is heavily dependent on imported transport fuel. The bill in 2008 was €5.9 billion. Because of the significant resources in organic residues and feedstocks there is readily available potential to substitute 8.4% of oil with indigenously produced biomethane, a renewable gaseous...

Grass biomethane has been shown to be a sustainable gaseous transport biofuel, with a good energy balance, and significant potential for economic viability. Of issue for the designer is the variation in characteristics of the grass depending on location of source, time of cut and species....