Good question. Not much. I had lots of units that would start and run 15 minutes each week. There was almost zero fuel cost each year unless there had been some power outages. I think you would have to find someone willing to run their unit and measure the fuel consumption to get a good figure. It is probably somewhat dependent on outside air temp and altitude.
From: Adam Moffett Sent: Friday, June 03, 2016 7:20 AM To: [email protected] Subject: [AFMUG] Generator runtime on very light loads Generac tech support could not answer this question for me: What will my fuel consumption be a 1% load. I am looking at a 16kw Generac Guardian. Which has a 992cc engine and the spec sheet says will be consuming 1.99gal/hour of propane at 50% load. I'll be at 1% load and want to know how much fuel I would consume per hour. Or maybe a different question: What's the minimum amount of fuel it takes to keep a 992cc engine running at 3600RPM?
