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Face south at a modest tilt and you are close to optimal. Here is how much you lose if your roof does not cooperate.
Image: Webberville Solar Farm Near Austin Texas from the Air by The tdog, CC0, via Wikimedia Commons.
Orientation is the first question solar design asks and the one homeowners worry about most. The good news is that Raipur's latitude and sunshine are forgiving. This guide gives a clear answer on direction and tilt for solar panels in Raipur, shows how much yield you trade away for different layouts and explains when to choose east-west over south.
Quick answer: face south at about 20 to 25 degrees tilt. If the roof shape or shade says otherwise, east-west layouts or modest deviations cost only a few per cent.
Raipur sits at about 21 degrees north, so the sun is in the southern half of the sky for most of the year. Panels facing south catch it for the longest. A tilt near the latitude gives a good annual result. A smaller tilt favours summer and a larger one favours winter.
| Orientation (tilt about 20 degrees) | Yield vs best (illustrative) |
|---|---|
| South | 100% |
| South-east or south-west | About 96 - 98% |
| East or west | About 88 - 93% |
| East-west split (half each) | About 90 - 94% of capacity, smoother daily curve |
| North | About 75 - 85% |
Figures vary with roof tilt and local factors. They are indicative, not guarantees.
| Tilt | Pros | Cons |
|---|---|---|
| 10 degrees | Lower wind load, tighter rows | Less winter yield, more dust sitting |
| 20 - 25 degrees | Balanced annual yield | Larger shadows between rows |
| 30 degrees or more | Better winter yield | Higher wind loads and wider spacing |
On a sloped roof, panels usually follow the roof. South-facing slopes are ideal. East and west slopes work with modest loss. North-facing slopes are generally avoided.
Rows too close shade each other in winter. Spacing is set from tilt and sun angle. Our guide to solar layout around water tanks explains obstructions.
Some owners ask about direction for cultural reasons. For energy yield, the physics above applies. If tradition affects where panels may go, tell the designer early so that the layout can respect it with minimal loss.
A homeowner has a 5 kW target and a 50 square metre roof with a tank at the south edge. A south-facing layout fits only about 3.5 kW without shading. An east-west layout on the same roof fits the full 5 kW, using lower-tilt panels back to back. The east-west array yields about 6 to 8 per cent less per kW than a perfect south layout, but delivers more total energy because it has more capacity and avoids the tank shadow. The owner chooses east-west and gets the larger system with a smoother generation curve that matches morning and evening use.
Face the sun, then let the roof decide the rest. For the fundamentals of solar in Raipur, read our cost and savings guide, and use the solar Raipur locality guide for your neighbourhood. A local solar company in Raipur should survey your roof, our checklist for the best solar company in Raipur shows what to ask, and our solar installation in Raipur team handles the work. Browse all solar guides or read about PM Surya Ghar Yojana in Raipur.
South is best in India's northern hemisphere. East-west layouts also work and can suit roof shape and evening or morning load.
A tilt close to the latitude, about 20 to 25 degrees, is a good annual compromise. Lower tilts help summer and higher tilts help winter.
A few percent for modest deviations; more for north-facing roofs. A designer can quantify it for your roof.
Yes, but dust and water collect, and yield falls slightly. A small tilt helps self-cleaning in rain.
Rarely worth it on rooftops. Fixed tilt is simpler and almost as good.
Visit C-29, Sector 3, Devendra Nagar, Raipur, Chhattisgarh 492001, call 083051 31420 or send your details online for a free survey and a written quotation. Our solar installation in Raipur team replies the same working day.
Looking for the best solar company in Raipur? See how solar in Raipur works, check the solar Raipur locality guide and book solar installation in Raipur with a trusted solar company in Raipur. Our checklist for the best solar company in Raipur shows what to ask. Browse every article on the solar blog, or see PM Surya Ghar Yojana in Raipur and our solar services.
Orientation, tilt and shading analysis with expected yield in writing.