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Not necessarily. New Jersey's net-metering rules contemplate customers taking supply through Basic Generation Service or a third-party supplier, though billing arrangements can differ. The supplier contract is worth reading, particularly on exported energy and the annual true-up.

Most residential leases provide a process for transferring the agreement to a qualified buyer, though the requirements vary by provider. Before signing it is worth understanding how a purchaser qualifies, what the transfer involves, any fees, the buyout options, the timing, and what happens if a buyer declines to take it on.

It depends on the architecture and on the nature of the fault. With module-level electronics a problem affecting one panel or device can often be isolated without stopping the rest of the array, and monitoring is what identifies abnormal module-level performance before anyone notices it on a bill.

There is no single guaranteed service life. Longevity depends on the shingles, the installation, ventilation, weather exposure and maintenance. New Jersey roofs face summer heat, freezing temperatures, snow, ice, heavy rain, wind, humidity and, in some areas, coastal salt. A properly installed architectural roofing system should be judged against the manufacturer's warranty and installation requirements rather than a generic life-expectancy number.

Damaged or deteriorated roof sheathing should be replaced so the new roofing system has a solid fastening surface.