10 kW Solar System Generation: How Many Units per Day in Delhi NCR (2026)

A 10 kW rooftop solar system is the typical sizing for a large villa, a 4-BHK independent floor with two A/Cs running through summer, or a small commercial premises in Delhi NCR. The question every serious buyer asks at quote time: how many units will it actually generate in a day?

This page answers that question with month-by-month numbers from Delhi NCR irradiance data, plus what the 10 kW size means for net metering, subsidy, and payback.

Daily Generation by Season (Delhi NCR)

Using Delhi''s field-corrected per-kW yield (see our per-kW generation guide):

A 10 kW system in Delhi NCR generates roughly 15,000 units per year. That''s enough to cover the entire annual consumption of a household drawing 1,200 units/month on average, with the seasonal surplus banked via net metering.

What 10 kW Actually Costs (Delhi NCR)

The subsidy is capped at 3 kW — a 10 kW system still receives only the 3 kW subsidy amount. Anyone quoting you a "10 kW subsidy" north of ₹78,000 (or ₹1,08,000 in UP) is wrong.

For full city-by-city pricing breakdowns, see Delhi NCR pricing, Gurugram pricing, Faridabad pricing, and Noida pricing.

Payback Math for a 10 kW System

At an average DHBVN/BSES upper-slab tariff of ₹8/unit:

• Annual generation: 15,000 units
• Annual savings: ₹1,20,000
• Net cost (DHBVN): ₹4,72,000
• Payback: 3.9 years

Noida''s lower net cost (₹4,42,000) pulls payback to 3.7 years.

After payback you''re looking at 21+ years of ~₹1.2L/year electricity offset — a lifetime saving of ₹25L+ at today''s tariff (and substantially more as tariffs escalate at ~5%/year, which is the actual historical Delhi NCR trend).

Roof Area and Panel Count

A 10 kW system at 600 Wp/panel needs 17 panels (16.7 → round up to 17). Each panel is roughly 2.4 m × 1.13 m ≈ 2.7 m². With walking space and tilt:

• Minimum roof area: ~600 sq ft of contiguous, unshaded, south-facing space
• Recommended: 700–800 sq ft for service access and a future battery cabinet

Most independent floors in Delhi NCR Sectors 14–57 (Gurugram), Sectors 50–75 (Noida), Sectors 14–46 (Faridabad), and Dwarka/Vasant Kunj/Rohini blocks have the area on the top terrace. Apartment-block roofs can host 10 kW only as an RWA-level community installation — see our Dwarka RWA community solar guide.

For the 10 kW microinverter alternative (worth considering when you have multiple shading sources), read our 10 kWp Enphase IQ8 case study from a Gurgaon bungalow — real module-level yield data from a 2.5-year-old install.

Net Metering for a 10 kW System

10 kW is the upper limit for residential net metering in most NCR utility territories without crossing into commercial-category billing:

• BSES Rajdhani / BSES Yamuna (Delhi): Up to 10 kW residential, quarterly settlement
• TPDDL (Delhi): Up to 10 kW residential, annual settlement
• DHBVN (Gurugram, Faridabad): Up to 10 kW residential, monthly netting
• PVVNL (Noida, Greater Noida): Up to 10 kW residential

Crossing 10 kW often re-categorises you to commercial tariffs (₹10+/unit fixed charge, three-phase connection mandatory). For most homes, 10 kW is the sweet spot — the largest you can install before the tariff math changes.

FAQ

How many units does a 10 kW solar system generate per day in Delhi? 40–54 units depending on season. Peak summer (May) hits ~54 units/day; winter (December–January) drops to ~30 units/day; annual average is ~42 units/day.

How many units in a year? About 15,000 units annually for a properly-installed 10 kW system in Delhi NCR with quarterly cleaning.

Is a 10 kW system overkill for a home? For a 1,200+ units/month consumer (typical of large villas with 4+ A/Cs, EV charging, or pool pumps) it''s correctly sized. For a 600 units/month household, a 5 kW is the better number — see 3 kW vs 5 kW for Indian homes.

Does the PM Surya Ghar subsidy increase for a 10 kW system? No. Subsidy is capped at the 3 kW slab — ₹78,000 central, plus state top-up where applicable (Delhi ₹30,000; UP ₹30,000; Haryana ₹0). A 10 kW system gets the same subsidy as a 3 kW system.

How much roof do I need for 10 kW? About 600 sq ft of unshaded, south-facing roof minimum. 700–800 sq ft is more comfortable. See our solar on 1000 sq ft roof guide for a full sizing walkthrough.

Can I run a 10 kW system on a single-phase connection? Technically up to 7–8 kW; for 10 kW you''ll typically need a three-phase service connection from your utility. DHBVN, BSES, and PVVNL all require three-phase for residential 10 kW installations.

Get a 10 kW Quote

Our installations engineer will measure your roof, check shading, verify your single-vs-three-phase connection, and give you a binding quote with month-by-month generation forecast. Free, no obligation, MNRE-empanelled — and we file the PM Surya Ghar paperwork ourselves.