Procedure for assessing CO₂ emissions savings from the operation of Russian-design NPPs
(in tonnes of CO₂ equivalent)

The assessment of historical emissions savings (in tonnes of CO₂ equivalent) from the operation of Russian-design NPPs globally is calculated using the following formula:
Es.= СО2_alt x (PG by NPPs in Russia + PG by NPPs abroad), where

СО2_alt — are emissions of CO₂ equivalent from alternative sources, calculated based on an assumption that 100% of nuclear power generation is replaced with other electricity sources in proportion to their shares in the global power generation structure¹, with emissions of CO2 equivalent reassessed accordingly by type of generation².
Calculated СО2_alt= 489 tonnes of СO2 equivalent/GWh.

PG by NPPs in Russia is annual power generation by Russian-design NPPs in Russia.³

PG by NPPs abroad is annual power generation by Russian-design NPPs abroad.⁴

Sources:
¹ Data from the International Energy Agency (IEA) (the World Energy Outlook report by the IEA, 2021)

² Data from the Intergovernmental Panel on Climate Change (IPCC) (the Mitigation of Climate Change report by the IPCC, 2014) and the World Nuclear Association (WNA) (the Comparison of Lifecycle Greenhouse Gas Emissions of Various Electricity Generation Sources report by the WNA)

³ Data from annual reports of JSC Rosenergoatom Concern

⁴ Data from the Power Reactor Information System (PRIS) database of the International Atomic Energy Agency