More than 600 Swedish children and young people are right through the organization Aurora Swedish State, reports Dagens Nyheter.
The background to the lawsuit, which has been in preparation for two years and will be filed on Friday, is that the young people believe that Swedish climate policy is illegal.
"If the state's climate action is flawed now, they are threatening our human rights in the future. It's a legal obligation that the state can legally be held accountable for. That's why we sue them", says law student Ida Edling to the newspaper.
Another person behind the initiative is climate activist Greta Thunberg.
According to Aurora, the state is failing on several points, including the lack of studies on how much of the global climate work Sweden will be responsible for.
Similar lawsuits have been filed in other European countries. In both Germany and the Netherlands the won activists in the courts against the government of the respective state, forcing the representatives of the two countries to tighten the climate targets.