Hi Susan,
Mk4 GENENG MIL type Sumerian Hamsters are very expensive technology for use in microgeneration energy sources. But after the initial cost of purchase the long term use of Hamster technology becomes much more cost effective as a pair of MK4s are self replicating. It has been demostrated that 14 Mk4s working in self organising shift rota can keep a Laptop powered for 24/7. Feeding the cat is really only viable only after hamster exhaustion.