Solar Generation Calculator by City

How to read this comparison

Saved PVWatts v8 models cover 12 city examples at Census 2024 city internal points: Raleigh, Atlanta, Boston, Chicago, Columbus, Dallas, Denver, Detroit, Houston, Las Vegas, Los Angeles and Miami. Each uses a one-kW DC standard-module roof-mounted array, 30° tilt, south-facing 180° azimuth, 14% losses, DC/AC ratio 1.2 and inverter efficiency 96%.

System size scales the saved monthly and annual one-kW output linearly while retaining those model assumptions. NSRDB typical meteorological-year weather represents a long-term model, not a forecast or an observed production year. Monthly modeled values reconcile to annual output. Actual shading, roof direction, equipment and interannual weather can change production. The station metadata and warnings are retained in downloads. For different tilt, shading or a city outside this saved coverage, use the linked official PVWatts calculator.

Sources and reproducibility

Retrieved 2026-10-01. Original-download and archived-extract SHA-256 checksums and selection rules are preserved in the source manifest. Published missing or suppressed observations remain unavailable.

• pvwatts-0644000.json — Unchanged PVWatts v8 monthly one-kW model fields, except removal of echoed api_key; Census city internal point; standard module, roof mounted, 30-degree tilt, south azimuth, 14% losses, 1.2 DC/AC ratio, 96% inverter efficiency, NSRDB typical meteorological year
• pvwatts-0820000.json — Unchanged PVWatts v8 monthly one-kW model fields, except removal of echoed api_key; Census city internal point; standard module, roof mounted, 30-degree tilt, south azimuth, 14% losses, 1.2 DC/AC ratio, 96% inverter efficiency, NSRDB typical meteorological year
• pvwatts-1245000.json — Unchanged PVWatts v8 monthly one-kW model fields, except removal of echoed api_key; Census city internal point; standard module, roof mounted, 30-degree tilt, south azimuth, 14% losses, 1.2 DC/AC ratio, 96% inverter efficiency, NSRDB typical meteorological year
• pvwatts-1304000.json — Unchanged PVWatts v8 monthly one-kW model fields, except removal of echoed api_key; Census city internal point; standard module, roof mounted, 30-degree tilt, south azimuth, 14% losses, 1.2 DC/AC ratio, 96% inverter efficiency, NSRDB typical meteorological year
• pvwatts-1714000.json — Unchanged PVWatts v8 monthly one-kW model fields, except removal of echoed api_key; Census city internal point; standard module, roof mounted, 30-degree tilt, south azimuth, 14% losses, 1.2 DC/AC ratio, 96% inverter efficiency, NSRDB typical meteorological year
• pvwatts-2507000.json — Unchanged PVWatts v8 monthly one-kW model fields, except removal of echoed api_key; Census city internal point; standard module, roof mounted, 30-degree tilt, south azimuth, 14% losses, 1.2 DC/AC ratio, 96% inverter efficiency, NSRDB typical meteorological year
• pvwatts-2622000.json — Unchanged PVWatts v8 monthly one-kW model fields, except removal of echoed api_key; Census city internal point; standard module, roof mounted, 30-degree tilt, south azimuth, 14% losses, 1.2 DC/AC ratio, 96% inverter efficiency, NSRDB typical meteorological year
• pvwatts-3240000.json — Unchanged PVWatts v8 monthly one-kW model fields, except removal of echoed api_key; Census city internal point; standard module, roof mounted, 30-degree tilt, south azimuth, 14% losses, 1.2 DC/AC ratio, 96% inverter efficiency, NSRDB typical meteorological year
• pvwatts-3755000.json — Unchanged PVWatts v8 monthly one-kW model fields, except removal of echoed api_key; Census city internal point; standard module, roof mounted, 30-degree tilt, south azimuth, 14% losses, 1.2 DC/AC ratio, 96% inverter efficiency, NSRDB typical meteorological year
• pvwatts-3918000.json — Unchanged PVWatts v8 monthly one-kW model fields, except removal of echoed api_key; Census city internal point; standard module, roof mounted, 30-degree tilt, south azimuth, 14% losses, 1.2 DC/AC ratio, 96% inverter efficiency, NSRDB typical meteorological year
• pvwatts-4819000.json — Unchanged PVWatts v8 monthly one-kW model fields, except removal of echoed api_key; Census city internal point; standard module, roof mounted, 30-degree tilt, south azimuth, 14% losses, 1.2 DC/AC ratio, 96% inverter efficiency, NSRDB typical meteorological year
• pvwatts-4835000.json — Unchanged PVWatts v8 monthly one-kW model fields, except removal of echoed api_key; Census city internal point; standard module, roof mounted, 30-degree tilt, south azimuth, 14% losses, 1.2 DC/AC ratio, 96% inverter efficiency, NSRDB typical meteorological year
• solar-city-points.csv — Unchanged Census 2024 place identifiers, names and internal-point coordinates for the 12 modeled city examples

Download the complete source snapshot · Download the saved example comparison

Keep exploring