Plot hole: Every time the nanos stop absorbing electricity (for whatever reason), street lights, radios, everything 'on the grid' immediately starts to come back on. No re-building infrastructure, no restarting turbines, etc., even 15 year old streetlights lying on the ground, in the middle of nowhere.
Factual error: When the presidents are coming together, there are pictures being taken with flash photography, which would not be possible in a world without electricity. (00:34:15)