A portable generator costs anywhere from under $400 to more than $2,000, and there are several price points in between. Learn more about the different types, what goes into the cost, and what you'll find among the different. . The fact is that the average cost to install a generator doesn't have to be through the roof. You might be surprised at how affordable powerful generators can be. It has a continuous 8000W power supply with gas at 7500W power with propane, runs 11 hours at 1/2 load. The unit has an engine volume of 76dB. . Most home generators cost between $400 and $23,000+, depending on the type, size, and installation. Here's a quick cost snapshot: The total. .
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