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What underperformance looks like in the data, why most homeowners miss it, and how monitoring catches it before warranty windows close.

When per-panel data matters, when string-level is enough, and what your inverter brand actually exposes.

Inverters, optimizers, microinverters — what fails first, how you'd know, and what your installer owes you.

What the production guarantee in your contract actually says, what counts as a shortfall, and what the installer is on the hook for.

What you keep, what you lose, and exactly what to do in the first 30 days.

How net metering credits should appear, the common errors, and how to dispute them with paper-trail evidence.

Why payback estimates are systematically wrong, and the four numbers to check before signing.

The 0.5%/year industry assumption, when it breaks, and how to verify your panels are aging on schedule.

Snow loss, winter performance, and what to expect from northeast arrays through a full year.

NY-SUN, net metering rules, and what production looks like across NY's climate zones.