<p>WARSAW, Poland — Energy experts were working Tuesday to restore full operations at Poland’s biggest power plant, the lignite coal-fueled Belchatow, after an energy network failure switched off 10 of the plant’s 11 units. </p>
<p>Energy imports from Germany and Sweden were needed to fill in for the suddenly missing power. Belchatow provides up to 20% of Poland’s energy. </p>
<p>The outage occurred late Monday, due to a failure of power station where 10 of Belchatow’s units are connected. The largest, 11th unit, is connected to a different power station and was not affected. </p>
<p>Poland’s chief energy distributor, PGE, said early Tuesday that work had been restored in six of the units, but that restarting them after a total cut was a big challenge. </p>
<p>Belchatow, in central Poland, combines Europe’s largest lignite mine and Poland’s largest power plant. With total power of some 5.3 GW, it supplies energy to some 11.5 million households. </p>
