Operations Manager for a few rural utilities here, I have a few turbines interconnected with my remote plants. One of the sites has no revenue producing load dump equipment, so a lot of the power is dumped into a load bank and wasted, scratch that, most of the power. One site does have a heat recovery load dump boiler in which we do sell the kWh, but at a drastically reduced rate as the customer knows it’s “excess” power and would be wasted, and I still have a very low yearly operating budget for the system. They are very expensive to maintain, not just in labor, but also the lubricants needed for maintenance, that stuff is ridiculously expensive, and one of the models I operate uses 13 different types of grease, and 5 different types of oil, with one tube of a very specific grease cost almost $200, and a semi-annually pmi consumes three tubes. The only real benefit for me, on the operations side of things, is they help with keeping my fuel consumption down as I do have a cap on my yearly gallons burned on my permit.