"We face humanity's biggest challenge, which is global warming. We must have ambitious and rapid policies to reduce emissions in Sweden," says Green party spokesperson Isabella Lövin (MP), to news agency TT.
She told the press that the money would come from the regular budget and an increase in environmental taxes, including the flight tax.
Distance-based taxes on heavy goods vehicles would be another measure to help meet the 2030 fossil fuel target as well as improved rail services.
The party also wants to make it easier to live and work outside of the big cities.