On the world map I am running a little test with AI and power shortages.
1000 of my cruisers split up into 4 groups. 1 group for Europe, 1 group for S. America, 1 group for Africa, and 1 group for South Asia. Just floating along the coasts of these nations destroying every power plant in my range. All my missiles have run out already(got plenty stockpiled, just can't get them to the fleets
), but my DDX destroyers can hit targets 250km inland so it is a pretty good spread.
Europe is taking the worst hit so far, if only because they are the most densely packed so far. There isn't a powerplant left standing anywhere between Portugal and Germany, to include England. South asia has basically lost japan and all it's power plants to my horde of ships, but lack of fuel has hamperend my efforts there.(trip from hawaii sapped the tanks pretty bad) Africa is so sparsely populated that I destroyed maybe 4-5 powerplants before I ran out of fuel and had to stall while the captured ports repaired. Similar with S. America, but more destruction there.
It is hard to guage the exact effect right now(other than lowering of their DAR and MAR while I destroy them), but without a WM to supply units, money, and resources I expect half the world's production to grind to a screeching halt with the lack of power. I expect my war is having a twofold hit on their resources. They once had healthy surplusses of goods and resources, but now that they are cut short due to power loss, their trade prospects with other AI are likely shortened by a wide margin.
The lack of power is going to cause massive shortages in other goods which will have a direct effect on their DAR, and also a domino effect as shortages cause even more shortages. Also, all the units they are loosing along the shorelines is causing their MAR to drop. Especially with a casualty rating of 1500:10.
I expect they will all surrender to me eventually, and I won't even have to make a landing.
Main problem I have ran into is resupplying my ships with ammo and missiles. Fuel isn't as big a concern as ammo, since I have been able to capture various ports(and they actually repaired.... wonder what unit of mine allowed that to happen, aircraft carriers or general transport ships?). The fuel seems to restock much faster than the ammo.
I will continue rampaging across the world in the next few days, but progress is slow with all the activity.