100 kW reference
₹23,000/kW
≈ ₹23 lakh ex-GST for a qualifying CAPEX rooftop
BRPL / BYPL / TPDDL area · NCT of Delhi, Delhi
Delhi factory solar: 100 kW at ₹23,000/kW
CAPEX rooftop solar for Delhi's industrial areas, from Okhla and Mayapuri to Bawana, Narela and Wazirpur. Delhi factories get DERC net metering and a ₹1/kWh generation incentive that other NCR states don't offer.
500 kW reference
₹22,000/kW
≈ ₹1.1 crore ex-GST; scale lowers per-kW cost
Power distribution company
BRPL / BYPL / TPDDL
BSES Rajdhani, BSES Yamuna or Tata Power-DDL, by area
Industrial areas covered
8 areas
Okhla Industrial Area Phases I–III, Bawana Industrial Area, Narela Industrial Area
How much does factory rooftop solar cost in Delhi?
A 100 kW CAPEX rooftop system for a Delhi factory costs about ₹23 lakh (₹23,000/kW) excluding GST with Sun Wave, and a 500 kW system about ₹1.1 crore (₹22,000/kW). Sizes in between are priced progressively, and the final quote follows a site survey of your roof, load and BRPL / BYPL / TPDDL connection.
Where we work
Industrial areas we cover in Delhi
Okhla Industrial Area Phases I–III
Garments, electronics and chemicals; BRPL network.
Bawana Industrial Area
DSIIDC relocation estate in North-West Delhi; TPDDL.
Narela Industrial Area
TPDDL's 66/11 kV substation here serves 2,000+ industrial units.
Wazirpur Industrial Area
Stainless-steel utensil and metal-fabrication cluster; TPDDL.
Badli (Samaipur) Industrial Area
DSIIDC estate; TPDDL district office inside the area.
Mangolpuri Industrial Area Phases I–II
Approved industrial area; TPDDL.
Mayapuri Industrial Area Phases I–II
Auto components and metal fabrication; BRPL.
Jhilmil Industrial Area
DSIIDC sheds in East Delhi; BYPL.
Who we build for
Delhi industries that suit rooftop solar
Stainless steel utensils
A recognised MSME cluster at Wazirpur and Badli.
Auto components
Spread across Okhla, Mayapuri, Naraina, Wazirpur and Badli.
Garments & hosiery
Clusters in Okhla and Shahdara run day-shift production.
Plastics, packaging & paper
Moulding and converting lines in Naraina, Okhla and Patparganj.
Electrical & electronic goods
Naraina and Okhla clusters for electrical equipment.
Grid rules
BRPL / BYPL / TPDDL and Delhi rules for factory solar
Net metering sized to sanctioned load
Under DERC's 2014 net-metering regulations, any consumer can net-meter a system of 1 kWp or more, sized to sanctioned load, service-line capacity and grid feasibility. Surplus units carry forward within the financial year, and leftover credits are paid at the Commission-notified rate.
Source: DERC Net Metering Regulations 2014Faster approvals since July 2026
DERC's 2026 guidelines set a two-stage online process for C&I: feasibility within 15 days (deemed granted if the DISCOM misses it), then verification, net meter and connectivity within 10 days of installation.
Source: DERC Net Metering Guidelines, 2nd Amendment 2026₹1/kWh generation incentive for C&I
Delhi's Solar Energy Policy gives commercial and industrial rooftops a generation-based incentive of ₹1 per kWh of gross solar generation for 5 years, limited to the first 200 MW. The September 2026 amendment keeps it for C&I and extends the policy to March 2030. There is no capital subsidy for C&I.
Source: Delhi Solar Policy, 2nd Amendment 2026Industrial tariff and surcharges
The industrial energy charge is ₹7.75/kVAh plus ₹250/kVA/month under DERC's tariff order of 30.09.2021, which remains in force. A valid factory licence is required; surcharges, a monthly power-purchase adjustment and electricity duty are added on top. ToD (±20%) applies May–September.
Source: Delhi tariff schedule (DERC order 30.09.2021)Green open access from 100 kW
DERC's 2026 amendment removed the 11 kV condition: any consumer with 100 kW or more of contracted demand, on one connection or several in the same DISCOM area, can now buy green power through open access.
Source: Times of India, Oct 2026Worked example
Payback on a 100 kW rooftop in Delhi
| Item | Value | Basis |
|---|---|---|
| System cost | ₹23,00,000 | 100 kW × ₹23,000/kW, ex-GST (Sun Wave reference) |
| Year-1 generation | 1,20,000 units | 100 kW × 1,200 kWh/kWp/year (Delhi Solar Policy, 2nd Amendment 2026) |
| Grid energy charge avoided | ₹7.75/kVAh | Industrial energy charge, DERC order 30.09.2021 (excludes surcharges and PPAC) (Delhi tariff schedule) |
| Year-1 saving | ≈ ₹9,30,000 | 1,20,000 × ₹7.75 |
| Simple payback | ≈ 2.5 years | System cost ÷ year-1 saving |
Illustrative only. Assumes the factory uses all solar output during working hours and counts the energy charge alone, treating one kVAh as one kWh (unity power factor). It excludes GST, demand charges, surcharges, panel degradation, O&M and financing. Your actual payback depends on your tariff category, load profile and roof. Try the solar savings calculator with your own bill.
Local context
What Delhi factories should know
Delhi's industrial tariff applies only with a valid factory licence. If it lapses, the unit is billed at the higher non-domestic rate — ₹8.50 instead of ₹7.75/kVAh.
Source: Delhi tariff schedule FY2021-22A CEEW field study with BYPL found that cleaning modules raised the output of Delhi rooftop systems by 10–20%, because of dust and poor air quality — regular O&M matters more here than in most cities.
Source: CEEW rooftop generation studyDelhi has three main DISCOMs: BRPL serves South and West Delhi (including Okhla and Mayapuri), BYPL East and Central Delhi, and TPDDL North and North-West Delhi (including Bawana, Narela, Wazirpur and Badli).
Source: BSES / TPDDLDelhi is in the National Capital Region, so CAQM Direction No. 76 applies: diesel DG sets may run only as backup, and older sets of 41–800 kW need dual-fuel kits or certified emission-control retrofits. Rooftop solar cuts the daytime units a DG set or the grid has to supply.
Source: CAQM Direction No. 76 (as amended 2024)Frequently Asked Questions
Is there a rooftop solar subsidy for factories in Delhi?
There is no capital subsidy for commercial or industrial consumers; Delhi's capital subsidy is for homes and housing societies. Factories can get a generation-based incentive of ₹1 per kWh of solar generated for 5 years, limited to the first 200 MW of C&I capacity, which the September 2026 amendment keeps.
How long does net metering approval take in Delhi for a factory?
Under DERC's 2026 guidelines, the DISCOM must finish technical feasibility within 15 days or it is deemed granted. After installation it must verify documents, inspect, fit the net meter and grant connectivity within 10 days.
How much does a 100 kW rooftop solar plant cost in Delhi?
Sun Wave's reference price is about ₹23,000/kW excluding GST at 100 kW, about ₹23 lakh, and ₹22,000/kW at 500 kW, about ₹1.1 crore. At about 1,200 kWh per kWp a year, a 100 kW plant produces roughly 1.2 lakh units annually.
Can a factory in Delhi buy green power through open access?
Yes, if its contracted demand or sanctioned load is 100 kW or more, on one connection or several in the same DISCOM area. DERC's 2026 amendment removed the earlier requirement to be connected at 11 kV or above.
Delhi solar guides
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Phone
+91-8800477880
Email
shubham@sunwavetech.com
Address
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