Solar Technology (www.solartechnology.co.uk) sells solar-powered lighting systems that range from a £20 kit for a shed that charges three rechargeable AA batteries for powering 10 LEDS right up to a £349 kit that powers six 8W fluorescent tubes for workshops or other small buildings lacking mains power. When used with a 75Ah or 85Ah battery, the latter will operate the fluorescent lights for up to eight hours each night.