In India, which is in the northern hemisphere, solar panels facing south generally produce the most energy over a year. A tilt angle close to your location’s latitude is a good starting point for the best yearly total.
Direction
- South: usually the best yearly output.
- East or west: lower total, but generation is spread into the morning or afternoon.
- East-west split: useful on roofs where south is not possible; output is flatter across the day.
- North: generally avoided.
Tilt
A tilt close to your latitude favours the best output across the year. Latitude ranges from about 8° in the far south to over 30° in the north. Karnal, for example, is close to 30°N. A slightly flatter angle can suit summer; a steeper one suits winter.
Very flat panels collect more dust and drain less rainwater, so a small tilt also helps cleaning.
Shade matters more than angle
Keep panels clear of shade from water tanks, stair towers, parapets and trees, especially between mid-morning and mid-afternoon. Tenzor Pulsar and Stellar panels use half-cut cells, which reduce the loss when part of a panel is shaded.
What about wind?
Steeper, raised structures catch more wind. Mounting structures must be designed and anchored for local wind conditions; your installer handles this.
FAQs
Is south always best?
For the highest yearly total, generally yes in India. East or west can suit roofs or loads that peak in the morning or evening.
Should I change the tilt by season?
Most rooftop systems use a fixed tilt. Seasonal adjustment adds work for a small gain.