I know about solar panels and wind turbines but either will have to be above ground. Petrol or diesel generators are to loud and fuel isn't cheap these days.
Hello Rig up an auto alternator to an exercise bike running a belt off the bike wheel to the alternator, connect ? to a couple of good 12 volt batteries (deep cycle boat batteries would be best) wired in parallel from battery to an inverter of around 500 to 750 watts this will be enough for lighting, radio, and small toaster. Now of course you will need to set up an exercise routine for running the alternator but you will keep very fit and if their is a few you can take turns and all keep very fit! If you could get more batteries and larger inverter you would be able to run a small kettle as it's only on for minutes so batteries would cope. Regards Alan
Nuclear reactor power plant. Stationary exercycles. Water wheel in underground river. Steam boiler fired by coal or natural gas. Fuel cell.
