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 Bhutan. Click on any location for more detailed information.

Explore the solar photovoltaic (PV) potential across 7 locations in Bhutan, from Trashi Yangtse to Phuntsholing. 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
Trashi Yangtse	Trashi Yangste	27.6092	91.5017	4.48	4.66	4.04	4.74	27° South
Jakar	Bumthang District	27.5483	90.7568	4.35	4.55	4.01	4.71	27° South
Thimphu	Thimphu District	27.47	89.6431	4.49	4.62	4.34	5.01	27° South
Trashigang	Trashigang District	27.3293	91.5534	4.48	4.61	3.98	4.72	26° South
Tsimasham	Chukha	27.1021	89.5388	4.50	4.58	4.28	5.00	26° South
Tsirang	Tsirang District	27.0243	90.115	4.35	4.59	4.07	4.72	26° South
Phuntsholing	Chukha	26.8481	89.3871	4.15	4.66	3.91	5.42	26° South

Solar Panel Tilt Angle in Bhutan

So far based on Solar PV Analysis of 7 locations in Bhutan, we've discovered that the ideal angle to tilt solar PV panels in Bhutan varies between 27° from the horizontal plane facing South in Trashi Yangtse and 26° from the horizontal plane facing South in Phuntsholing.

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 Bhutan, the ideal angle to tilt your solar panels will vary by approx 1 degree (between 27° from the horizontal plane facing South and 26° 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.