@hawkeye10,
I'm sure that Ukraine will be able to pay for their energy requirements wherever they buy it from.
From E.Britannica.....
"Ukraine has extremely rich and complementary mineral resources in high concentrations and close proximity to each other. Rich iron ore reserves located in the vicinity of Kryvyy Rih, Kremenchuk, Bilozerka, Mariupol, and Kerch form the basis of Ukraine’s large iron-and-steel industry. One of the richest areas of manganese-bearing ores in the world is located near Nikopol. Bituminous and anthracite coal used for coke are mined in the Donets Basin. Energy for thermal power stations is obtained using the large reserves of brown coal found in the Dnieper River basin (north of Kryvyy Rih) and the bituminous coal deposits of the Lviv-Volyn basin. ...."
I think the main problem Putin has to look at is where the bloody hell will he now put his Navy if this all goes tits up for him?