Poland’s electricity grids will need a huge upgrade to cope with the transmission of power from renewable and nuclear sources, a senior Polish official said on Monday, the same day Poland unveiled an energy strategy that envisages a transition away from fossil fuels, reports Reuters.

Currently, Poland generates about 70% of its electricity in coal-fired power plants and has been working on a new energy strategy since the start of the war in Ukraine, with the idea of reducing its dependence on fossil fuels, according to Agerpres.

“By 2040, we need to invest about 500 billion zlotys ($116.1 billion) in transmission and distribution networks,” said Tomasz, CEO of Poland’s electricity transmission network operator (PSE). Sikorski added that Poland must plan the modernization of networks so that they are completed in parallel with the increase of renewable capacities.

According to Poland’s new energy strategy, 74% of electricity production would come from zero-emission sources, including renewables and nuclear energy. The authorities estimate that, by 2030, Poland will have 50 GW of renewable energy capacity, which will reach 88 GW in 2040.

“These revised forecasts will allow us to strengthen Poland’s energy sovereignty and the competitiveness of the national economy, as well as ensure energy security for citizens,” Polish Environment Minister Anna Moskwa said at a press conference.

Also according to the new energy strategy, by 2040, Poland’s installed energy capacity would double, reaching 130 GW.