But Moscow has increasingly targeted nearby infrastructure, such as substations containing crucial equipment like transformers and power lines connecting nuclear plants to the grid. “We're in a world where (Ukraine) has a deficit of functioning infrastructure. This is going to be the hardest winter yet,” International Energy Agency (IEA) Chief Economist Tim Gould told the Kyiv Independent. If Russian attacks successfully disconnect all the power plants from the grid, then Ukraine’s only stable power source is gone, said Warsaw-based energy analyst Wojciech Jakobik.“(Nuclear power) is a baseload capacity, which is irreplaceable by renewables, other sources, and especially not by energy imports,” he told the Kyiv Independent. “With a smaller nuclear capacity in place, Ukraine will have less flexibility and less ability to stabilize (energy) generation.