Solar Panel Angle Calculator

For year-round output, the optimal tilt angle is equal to the installation's latitude. Adjustments are made seasonally to boost winter or summer solar capture.

The sun sits lower in the sky during winter. Tilting panels steeper (latitude + 15 degrees) maximizes winter collection. In summer, tilting flatter (latitude - 15 degrees) aligns them with the high sun.

Latitude measures angular distance from the equator. The closer panels are to poles, the steeper their angle must be to face direct sunlight rays.

Declination is the angle between the sun's rays and the earth's equatorial plane, varying from -23.44° in December to +23.44° in June due to earth's orbital tilt.

In the Northern Hemisphere, panels should face true South (not magnetic South). In the Southern Hemisphere, they must face true North to capture direct solar noon light.

Single-axis trackers follow the sun east-to-west, increasing yields by 25%. Dual-axis trackers adjust for daily solar elevation changes, boosting production by up to 35% but adding mechanical complexity.

Flat panels accumulate dirt and snow. Tilting panels at a minimum of 10 to 15 degrees enables rain self-cleaning and facilitates snow shedding.

Azimuth is the horizontal compass direction of the sun, measured clockwise from North (where North is 0°, East is 90°, South is 180°, and West is 270°).

Flat roofs require mounting brackets (tilt racks) to elevate panels to their optimal latitude angle, preventing water pooling and boosting energy conversion.

Yes. Geolocation identifies coordinate latitude, allowing instant elevation lookup and tilt adjustments without manual measurements.

For fixed year-round installation, optimal tilt angle equals the site latitude (e.g., 34° tilt for 34° N latitude).

Set tilt to Latitude + 15° in winter to capture low sun angles, and Latitude - 15° in summer for high overhead sun paths.

In the Northern Hemisphere, solar panels should face true south (geographic south) for maximum daily energy yield.

Magnetic south is aligned with Earth's magnetic pole, while true south is aligned with the rotational axis. Compass readings must be adjusted for local magnetic declination.

Azimuth is the horizontal sun angle relative to due south (0°). Orienting panels within 15° east or west of south retains over 97% of maximum potential output.

Solar altitude is the vertical angle of the sun above the horizon, reaching its daily maximum at solar noon.

Single-axis trackers follow east-to-west sun path, increasing annual yield by 20-30%; dual-axis trackers also adjust elevation tilt, increasing yield by 35-45%.

Increasing panel tilt to 45° or higher helps snow slide off panel glass quickly, preventing winter generation blackouts.