My cheapo Chinese genny burns about a gallon every 4-5 hours depending on load - but it only puts out 1,200 watts (1,500 watt surge). The Honda is much more efficient. The EU2000 Honda will run from about 4-10 hours on a gallon of gas, depending on load. What makes the Honda more efficient is the ability to reduce RPM as load decreases, as it is an inverter genny. The most efficient inverter generators is the Boily, because their electronics are more efficient. Unfortunately they only have one model, a 3,000/3,300 watt model (a little more output than a 2,800 watt/3,000 watt Honda). According to the literature it only takes .55 liters of gas to produce 1 kwh of power, while the 3,000 watt Honda burns .64 l/kwh. The Yamaha and Kipor tie for second in the efficiency dept., both burning .58 liters of gas per kwh. If efficiency were a big concern I would choose the Yamaha, sacrificing a bit of efficiency for the better reliability and dealer support vs the Boily - that is if you really need a genny this large - say to run your ac and microwave.
http://bottomlinetrading.com/BOLIYCOMPARE.html
Chip
