BIFFA SITE PROFILE
38 open sites and 30 closed sites.
Waste input profile42 per
cent municipal, 30 per cent commercial, 28 per cent inertfrom
7 million tonnes per annum.
Closed site volume60 million
tonnes waste, open sites 40 million tonnes waste and 80 million
tonnes in filled.
Total methane yield 175,000 tonnes
per annum of which utilised for power = 71,000 tonnes per annum.
Energy output (100 per cent owned)
= 45 Mw.
Other output (JV and combustion)
= 40 Mw.
Flared (22 sites) = 43,000 tonnes
CH4 to atmosphere (22
sites) = 58,000 tonnes per annum.
Oxidised in capping = 6,500 tonnes
Gas yield derives from approximately
50 million to 60 million tonnes organic material.
Approximate Biffa reserves are 8
million to 9 million tonnes of methane for the next 40-50 years.
Theoretical Biffa output = 110 Mw/year
representing around 10 per cent of available generating capacity.
Theoretical maximum UK landfill contribution
is thus around 1.1 Tw-1.5 Tw.