The chicken coop is about 100 feet from the house, but isn't wired for electricity. We want to hang a 100-watt bulb in there now that the days are starting to get shorter. We also would like to put a heating pad under the waterer once the temperatures REALLY drop to prevent it from freezing. Is there a solar-powered energizer or other way to provide electricity to the coop (without running an extension cord from the house to the coop?