According to FT, the decision was made after France and some southern and eastern EU countries opposed punishing those energy sources.
The paper also added that although nuclear power and natural gas investments are seen as controversial, they might be necessary, as renewable energy sources are not stable and efficient enough in some countries of the bloc.
Natural gas and nuclear energy will be considered green, as long as countries using them meet certain environmental criteria.
In December, during a summit of European Union leaders in Brussels, Polish Prime Minister Mateusz Morawiecki was seeking to ensure the EU permits the financing of gas and nuclear power plants under its new "Fit for 55" package, public broadcaster Polish Radio’s IAR news agency reported.
“We made very firm, very unequivocal demands, while also showing that the European Commission must adopt friendly rules for the financing of gas-based and nuclear projects,” he added.
Source: Financial Times