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In order to contain NOx emissions, Snam has launched a programme over the years to replace traditional turbines with low-emission turbines (DLE) which, to date, account for almost all of those installed for the Group and 100% of those present at the storage sites

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The indicator that takes into account the NOx emissions on the energy used decreased of 11% respect to 2019

 

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NOx emissions into the atmosphere are determined based on direct measurements or, if these are not available, on emission factors present in the relevant literature (the EMEP/EEA Air Pollutant Emission Inventory Guidebook of the European Environment Agency)

The use of natural gas as the main energy source allows sulphur oxides and particle emissions to be minimised compared to the use of other fossil fuels. Of these, the only significant emissions are those of nitrogen oxides (NOx) , that derive mainly from the combustion of natural gas in the gas turbines installed in the compression plants (thrust and storage).

In order to contain NOx emissions, Snam has launched a programme over the years to replace traditional turbines with low-emission turbines (DLE) which, to date, account for almost all of those installed for the Group and 100% of those present at the storage sites.

All these initiatives together have led to a reduction in total NOx emissions of 11% compared to 2019 (from 452 to 403 tonnes) and a reduction in the ratio of nitrogen oxide emissions to energy used of 11%.

Average NOx emissions for the installed power of the storage and transport machinery were in line with those of 2019 (respectively 3.7 and 3.8 [mg/Nm3]/MW).

Total NOX Emission (t)

 

NOX emission / energy used

 

NOX atmospheric emissions are determined based on direct measurements or, where these are not available, on emission factors present in the relevant literature (the EMEP/EEA “Air Pollutant Emission Inventory Guidebook”).


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updated
28 April 2021 - 12:13 CEST