☀️ City-wise Solar Generation Reference (per kW installed)
City / Region
Peak Sun Hours
1 kW/Day
3 kW/Month
5 kW/Year
Radiation
Frequently Asked Questions
How many units does a 1 kW solar panel generate per day?
A 1 kW solar system generates 3.5 to 5.5 units (kWh) per day in India depending on location and season. Rajasthan and Gujarat get 5.5+ units/kW/day due to high irradiance. Coastal and north-east states get 4–4.5 units/kW/day. The national average is about 4.5 units/kW/day.
How many units does a 3 kW solar system generate per month?
A 3 kW solar system generates 270–500 units per month in India. In Rajasthan: ~500 units/month. In Mumbai: ~330 units/month. National average: ~390 units/month. This is calculated as: 3 kW × 4.5 hrs sunshine × 0.82 efficiency × 30 days = ~333 units.
What is peak sunshine hours and why does it matter?
Peak Sunshine Hours (PSH) is the number of hours per day when solar irradiance equals 1,000 W/m² (peak sun). India ranges from 4.5 PSH (northeast) to 6.5 PSH (Rajasthan). PSH directly multiplies your system output — a 3 kW system in Jodhpur (6.5 PSH) generates 40% more than the same system in Guwahati (4.5 PSH).
Does a solar system generate on cloudy or rainy days?
Yes — solar panels generate even on cloudy days, but at reduced output (20–40% of normal). During monsoon season (June–September), generation drops 30–50% compared to summer months. This is already factored into the annual estimates using monthly irradiance averages.