Problem: The United Muggles Republic, UMR, a proud island country located on the shores of the North Sea frequently experiences power outages. Its sole 1000 MW power plant, operated on firewood is falling apart and must be shut down in the next decade, if not earlier. The islanders can only pray that it would last long enough, and they will have enough trees to chop around until new capacity is built and capable of delivering 30,000,000 MWh electricity per year into the grid. This figure is, of course, after the adjustment for the load factor.