Absolutely true, what most don't seem to grasp is that at least one generator is essentially running 24/7 at any given time in any given community (regardless of wind).  Small loads such as light bulbs don't mean much in these small rural utilities unlike those on the grid.  The thing that makes a real difference is if the largest loads in a village can be reduced, which are typically the appliances at the residential level and the washeteria / schools / fish plants at the commercial.  And that is where capturing the waste heat (mechanical energy or kWM) can really displace energy costs if it's redirected to a boiler via a heat loop.