ResidentialThe right system size comes from your monthly units consumed, your available shade-free roof area, and how much of your bill you want to offset. As a rough guide, 1 kW of rooftop solar generates around 4 units a day on average in Bihar.
Why it matters in Darbhanga
Bihar receives strong solar irradiance for most of the year, which makes rooftop solar a practical investment rather than a theoretical one. With grid tariffs rising steadily, a correctly sized system typically pays for itself well within its working life.
What matters most is sizing the system against your actual consumption, choosing components that survive local heat and dust, and having a team nearby when service is needed.
Key points to remember
- Check 12 months of bills, not just one.
- Allow roughly 70–80 sq ft of shade-free roof per kW.
- Account for future load additions such as an AC or EV.
Talk to our team
Our team provides a free site survey across Darbhanga. We assess your roof, study your electricity bill and recommend a system design with multiple brand options, so you can compare clearly before deciding.
