Changes

Each power plant can support only finite amount number of industrial buildings. When you open the power plant info window, you will see two numbers:<br>

<br>The number on the left shows how many industries can support this particular power plant. The base number is 8 and each power plant upgrade adds another 3. <br>The number on the right is the total number of connected industries / total network capacity. If you connect the power plants together into one large network, all their capacity adds up together. Another bonus benefit is that if one plant runs out of fuel, the others will keep the industry running. Of course the maximum capacity will diminish, so some of the industrial buildings might lose their power bonus, but at least some of the network will be always working. If one power plans plant has no fuel and the maximum of the remaining network capacity is then exceeded, usually the industrial building closer to that non working power plant will lose their power bonus.