Calculator

Solar Production Estimator

By NerdVolt Editorial TeamJune 16, 2026Estimate tool

Accuracy note: The arithmetic on this page is deterministic from your inputs. Solar production, code, utility, incentive, and savings outputs are estimates unless you supply exact equipment specs, tariffs, shade data, and local requirements.

PVWatts is the preferred model. This lightweight version also supports a transparent peak-sun-hour estimate when you do not have an API result.

Inputs

Result

How this is calculated

Estimate = array kW × peak sun hours/day × 365 × (1 − losses). For bankable production, run PVWatts v8 with the exact location, tilt, azimuth, array type, module type, DC/AC ratio, and losses.

Sources