Where our numbers come from

Here’s how we calculate the figures for our green gasmills...

Carbon dioxide savings are calculated based on the maximum carbon intensity of biomethane required for RHI eligibility, which is 34.8gCO2/MJ.

This is considered against the carbon intensity of natural gas of 51.23gCO2/MJ (Defra GHG Conversion Factors 2015), giving a saving of 16.43g CO2/MJ.

It is worth noting that this represents a worst case scenario saving. The size of the proposed green gasmill enables even greater efficiency and the savings are likely to be significantly higher.

The number of households that could be supplied by the proposed development is calculated based on Ofgem's typical domestic gas consumption of 12,500kWh per year, which is an average across the UK.

*Variances in households numbers can result from using local consumption rates or different feedstock combinations.

Report by National Grid

"...renewable gas could meet up to 50% of UK residential gas demand. Produced mainly via a process of anaerobic digestion (AD) or thermal gasification of the UK’s biodegradeable waste, renewable gas represents a readily implementable solution for delivering renewable heat to homes in the UK."

Report by National Grid, January 2009