Concept Bikes & Bike Innovation - for better or worse

Are you not mixing up calories of cooked rice by weight with price of dry rice by weight?

Always nice to see somebody paying attention. Yes, you're right, so you only need to buy 400g of dry rice costing 8p (when bought by the Quintal of crappy Government Quality) to get the 124kJ net (generator output less cooking input, assuming you use best practice for cooking), which is about 0.7p worth of electricity at UK domestic prices.

Basically, food is very expensive in terms of energy content compared with oil or gas, and as much as we love the efficiency of a man on bicycle, he turns out to be pretty crap as an electricity generator compared with a good combined cycle gas power station which can exceed 50%