Manuel,
My wife and I intentionally have no TV, or video games and have twin boys just over 1 year of age. You find time to do so many more things that you normally wouldn't if you were stuck in front of the tube. We love music and play instruments a lot. Guitar, Didgeridoo, banjo, jimbe etc. The kids love it! A solid 1-2 hours before baths and bedtime is usually how it works out. Are these microhydro systems you are speaking of?
Brent Hilton