NOx and SOx emissions

Our material emissions of Nox are from our generating facilities in the US and our compressor fleet installed on the gas transmission network in the UK.

Our generating facilities in the US are our only material source of SOx. Prior to 2008/09, our Sox emissions from our UK gas transmission network and LNG facilities averaged around 3 tonnes per year.

NOx emissions
2008/09 (Tonnes)
Nox emissions
6,482
2007/08 (Tonnes)
Nox emissions
2,031
2006/07 (Tonnes)
Nox emissions
2,310
2005/06 (Tonnes)
Nox emissions
2,817
2004/05 (Tonnes)
Nox emissions
2,967

Data for material sources - US generation, UK gas transmission compressors, Isle of Grain and other LNG facilities.

Data for KeySpan for 2008/09 only, so there is no direct comparison with previous years. 





































































SOx emissions
2008/09 (Tonnes)
Sox emissions
7,217
2007/08 (Tonnes)
Sox emissions
2
2006/07 (Tonnes)
Sox emissions
3
2005/06 (Tonnes)
Sox emissions
4
2004/05 (Tonnes)
Sox emissions
4

KeySpan data included for 2008/09 only, so there is no direct comparison with previous years.