Villas & large homes
Solar for villas and large homes in Kochi & Ernakulam
Larger roofs, larger loads, and the point at which three-phase and EV charging start to change the sizing.
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Usual range
4 kW to 6 kW
Subsidy ceiling
₹78,000 (PM Surya Ghar)
Three-phase
From around 6 kW
EV charging
Changes the sizing
On a villa roof
More roof does not automatically mean more system
Villas usually land between 4 kW and 6 kW, because the load is driven by multiple air conditioners and often an electric vehicle. A 5 kW system generates about 7,000 units a year and suits a bill of roughly ₹3,800 to ₹4,800 a month. The subsidy, though, is capped at ₹78,000 from 3 kW upwards: so the capacity above 3 kW carries no extra subsidy.
Sizing a villa
What the survey establishes
Usual system range
Roof needed per kW
Orientation
Phase
Sanctioned load
EV charger
A villa is also the case where roof area usually stops being the constraint and the connection type starts to be. From around 6 kW a three-phase connection is generally needed.
What to know
Three things that change with size
Subsidy is capped at ₹78,000
From 3 kW upwards. A 6 kW villa system receives the same subsidy as a 3 kW one.
EV charging changes the sizing
Charging from the roof in daylight is the single biggest lever on the value of a large system. Mention it at survey.
Three-phase from around 6 kW
Worth establishing your connection type before design rather than during it.
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Questions
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Next step
Have the villa surveyed.
Roof planes, phase, sanctioned load and EV charging, in one visit.
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