Darkness. Nice for a romantic walk. Horrible when the lights should be on. Worse, if the lights are off, everything else is down too. With a reliable and powerful diesel generator, you always have power whatever the mains is doing. Freezers stay cool, the lights stay on. H-Power generators are built tough and for reliable stand-by power, you can’t get better than a high quality reliable H-Power Diesel Generator. H-Power – Power when you need it most.