One easy way to reduce total project cost is to simplify systems so they can be installed by an ordinary contractor or even become part of a do-it-yourself project. A manufacturer could do this by designing solar modules that integrate the photovoltaic panel, DC-AC inverter, safety features, and modular wiring into a single device. If all these features are combined, designing the system becomes much easier. You'd simply guestimate the number of panels needed, throw them up on your roof, and connect them to your existing wiring by way of standard electrical wiring. The panels would feed power back into your household wiring. Safety electronics, similar to fault protection power outlets, would sense anomalies such as a short circuit or external power outage and would isolate the solar panels from the electrical grid when needed
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