Ebay has exact replacement Leds for bulbs. Not very expensive. I have tried them, and use them for some areas. NOT as bright as incandescent bulbs for reading, but okay for restroom and general lighting. I switched to Solar charging for boon docking and have not found a need for more watt monitoring. Two 300 watt panels sell for around a dollar a watt, the solar controller, the good one, MPPT is around $65. The cable, and connectors, are around $35. It takes about 4-5 hours to wire in. I haven't ran a generator since installing.