EU energy ministers meeting in Luxembourg ended talks without a joint stance on the reforms that seek to avoid a repeat of last year's energy crisis, when record-high gas prices left consumers with soaring energy bills.
EU countries' ambassadors will take up the negotiations, aiming for a deal this month.
Asked about the coal proposal, Swedish Energy Minister Ebba Busch said ensuring Poland, which borders Ukraine, had stable power generation could help it support Ukraine with back-up power.
Poland, which gets around 70% of its power from coal, could prolong its support scheme for coal plants, potentially until 2028, under the proposal.
EU countries must negotiate the final power market upgrade with the EU Parliament, with the aim to pass the law before EU parliamentary elections next year.
Persons:
Ebba Busch, Anna Moskwa, Robert Habeck, Kate Abnett, Tassilo Hummel, Sudip Kar, Giles Elgood, Emelia, Barbara Lewis, Marguerita Choy
Organizations:
Union, Swedish Energy, Reuters, European Commission, Climate, EU, Thomson
Locations:
Poland, Belgium, Germany, LUXEMBOURG, Luxembourg, Sweden, Ukraine, Ukrainian, Austria, Greece, Spain