Whole house generators are a good option, but they cost big money to install and require gas or diesel for power Portable generators are almost always 3600 RPM models to take advantage of the lower weight Home generators are useful when ice or snow knocks down power lines Onan power plant's are one type of machine you can buy., power plant issues are usually engine related and not electrical troubles and power supplier applications range from powering toasters to tvs. Generator's of 15000 kw are definitely not portable. wattage. Power plant wattage is important in determining what you can run and what you cannot run.. Usage. Power suppliertroubles will be related to fire fuel and air on the power supplier's engine. RELATED LINKS:Gas generac generator advice /Portable briggs generator advice /Gas generac generator information |