The most expensive part of a solar installation is the hardware, which includes solar panels, collectors, inverter, and battery, making up 25 percent of the total cost. Off-grid inverters are generally more expensive than on-grid inverters due to construction material and higher. . It's also one of the more expensive parts of the system. So, whether you're installing for the first time or planning an inverter replacement, here's what actually affects the price, and how to make a smart decision that won't come back to haunt you in five years. What Does a Solar Inverter. . Today, most new photovoltaic (PV) installations utilize a string inverter or a microinverter. However, you can also get an inverter prepackaged together with a charge controller, battery and other components by buying a solar generator. Installation: Along with the equipment, the cost of. . Several factors influence the cost of solar power inverters, making it crucial to evaluate each component before making a purchase. Technology & Efficiency Modern solar inverters for home come with enhanced efficiency, offering higher conversion rates. More efficient inverters tend to be. . String inverters, a type of PV inverter, connect solar panels into groups, or “strings,” that feed into a single inverter. This type is cost-effective and easy to set up, especially in areas with consistent sunlight. With prices ranging from $0. 30 per watt, a typical system for a home with. . Solar inverters are expensive due to their comprehensive functionality, which allows them to manage multiple power sources and ensure seamless operation.