Below is the average daily output per kW of Solar PV installed for each season, along with the ideal solar panel tilt angles calculated for various locations in Laos. Click on any location for more detailed information.

Explore the solar photovoltaic (PV) potential across 3 locations in Laos, from Sainyabuli to Sekong. We have utilized empirical solar and meteorological data obtained from NASA's POWER API to determine solar PV potential and identify the optimal panel tilt angles for these locations.

If you have questions, feel free to contact us.

Location	Subdivision	Latitude	Longitude	kWh/day Summer	kWh/day Autumn	kWh/day Winter	kWh/day Spring	Panel Tilt Angle
Sainyabuli	Xaignabouli	19.2566	101.7144	5.08	4.83	5.14	5.81	18° South
Vientiane	Vientiane Prefecture	17.9641	102.5987	5.73	5.23	5.85	5.98	18° South
Sekong	Khoueng Xekong	15.3421	106.7246	5.12	4.80	5.67	5.98	15° South

Solar Panel Tilt Angle in Laos

So far based on Solar PV Analysis of 3 locations in Laos, we've discovered that the ideal angle to tilt solar PV panels in Laos varies between 18° from the horizontal plane facing South in Sainyabuli and 15° from the horizontal plane facing South in Sekong.

These tilt angles are optimised for maximum annual PV output at each location for fixed-panel solar PV installations. If you click on one of the locations above, there is further detail on ideal seasonal tilt angles as well (in case your solar panels are adjustable).

Depending on where you are based in Laos, the ideal angle to tilt your solar panels will vary by approx 3 degrees (between 18° from the horizontal plane facing South and 15° from the horizontal plane facing South).

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Helping you assess viability of solar PV for your site

Calculate Your Optimal Solar Panel Tilt Angle: A Comprehensive Guide

Elevate the performance of your solar PV installation by utilizing our thorough guide. Determine the best panel tilt angle using real-world data, debunk prevalent misconceptions and grasp how geographical location influences solar power yield.