The European Commission labels certain gas and nuclear projects as "green"

The European Commission has presented a Taxonomy Complementary Climate Delegated Act, which adds certain gas and nuclear activities to the EU Taxonomy as they are said to contribute to the regional bloc's climate and environmental objectives. Some gas and nuclear activities could be added as transitional activities to those already covered by the taxonomy, provided they contribute to the transition to climate neutrality; nuclear activities are required to fulfil nuclear and environmental safety requirements and gas should contribute to the transition from coal to renewables. 

The EU Taxonomy is a so-called green labelling system for investments in the energy sector. Nuclear plants could be considered green if they use best-available existing technologies (Generation III+) (recognised until 2045 (date of approval of construction permit)) or advanced technologies with closed fuel cycle (Generation IV); modifications and upgrades of existing nuclear installations for the purposes of lifetime extension, will be recognised until 2040 (date of approval by competent authority).

Gas-fired projects (for power generation or high-efficiency CHP production from fossil gaseous fuels, or for the production of heating or cooling from fossil gaseous fuels in an efficient district heating and cooling system) and must meet specific emission thresholds (lifecycle emissions below 100gCO₂e/kWh or direct emissions below 270gCO₂e/kWh until 2030 (date of approval of construction permit); for power generation, their annual direct GHG emissions must not exceed an average of 550kgCO₂e/kW of the facility's capacity over 20 years.

As for the other Delegated Acts under the Taxonomy Regulation, the European Parliament and the Council (who have delegated the power to the Commission to adopt Delegated Acts under the Taxonomy Regulation) will have four months to scrutinise the document, and to object to it if necessary.