Commercial rooftop solar in Ahmedabad.
Air conditioning, lighting and equipment in an Ahmedabad business peak at midday, which is exactly when a rooftop plant produces. We read your bill to confirm whether Torrent Power or UGVCL supplies you, and size the plant against daytime units. We then file the papers with that licensee and look after the plant afterwards.
Book a commercial roof survey in Ahmedabad
Upload a recent bill and tell us the building type. An engineer calls back, confirms your licensee from the bill and fixes a survey slot that suits your opening hours.
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The short answer
An Ahmedabad shop, office, hospital, school, hotel or mall can install rooftop solar on its own connection and cut the daytime units it buys. Torrent Power supplies businesses inside its Ahmedabad licence area and UGVCL supplies the rest, so the bill header decides where the file goes. Each kW yields 4 to 4.5 units a day. PM Surya Ghar does not cover businesses; taxpaying firms claim 40% accelerated depreciation.
Last reviewed 2 October 2026 · Heaven Green Energy engineering team
Which Ahmedabad businesses get the most from a roof plant
The best commercial candidates use most of their electricity between nine and five. Ahmedabad summers push air conditioning hard through those hours, so offices, showrooms and clinics line up with the solar curve better than most.
Commercial buildings in Ahmedabad fall into two electrical patterns. Some, like offices, showrooms, schools and day clinics, draw heavily in daylight and fall quiet after dark. Others, like hospitals, hotels and malls, run late or all night. The first group consumes nearly every solar unit on site. The second relies more on exported units being credited against evening use.
Your licensee depends on where the meter sits, not on the city name in your letterhead. Torrent Power holds the distribution licence for Ahmedabad city. Areas beyond that licence, including much of the western and eastern fringe, are supplied by UGVCL. A UGVCL list of sub-divisions names offices at Bopal, Shela, Shilaj, Changodar, Naroda, Kathwada and Sanand, which tells you how far its network reaches into places many people call Ahmedabad.
Telling the two apart takes one minute. Look at the top of your electricity bill. It carries the licensee's name and logo and your consumer or service number. Municipal boundaries have changed over the years and supply areas did not always move with them, so a ward name proves nothing. Send us the bill and we confirm the licensee before quoting.
Shops, showrooms and offices
Split or ducted air conditioners, display lighting, lifts and computers run from opening time to early evening. That profile matches solar output closely. A showroom on CG Road or an office floor in a commercial tower often uses most of its plant's output directly, with little left over to export.
Hospitals and clinics
Operation theatres, ICUs, chillers, sterilisers and laundry keep a hospital loaded day and night. Solar covers part of the daytime base load. It does not replace the diesel generator or UPS, because a grid-tied plant switches off in an outage. Critical circuits keep their existing backup arrangement unchanged.
Schools and colleges
Classrooms, labs, fans and computer rooms run in morning and afternoon sessions, which suits solar well. The weak point is the summer vacation, when the campus is empty during peak generation. Sizing has to account for those idle weeks, because surplus units are settled under the licensee's rules rather than paid out freely.
Hotels, malls and commercial complexes
Central air conditioning, escalators, kitchens, laundries and common lighting run for long hours. In a multi-tenant complex, each shop usually has its own meter while the association or developer holds the common connection. The plant connects to one connection, so decide early whose bill it is meant to reduce.
Judge the plant in units first, then let your accountant price them
A commercial plant earns its keep by replacing units you would otherwise buy. We size it from twelve months of bills, then hand you a unit forecast your accountant converts using the tariff printed on your bill.
Start from units. In Ahmedabad each installed kilowatt produces 4 to 4.5 units a day on an unshaded roof. A 25 kW plant yields about 36,500 to 41,000 units a year, and a 100 kW plant about 1.46 to 1.64 lakh units. Set that against the units on your last twelve bills and you see what share of your load the roof can carry. We do not print a rupee saving here, because commercial tariffs vary by category and connection type.
Daytime match and contract demand. Units you consume as they are generated are worth the most, because they never touch the meter. A showroom that runs its chillers at noon uses nearly all of them. The licensee also checks the plant rating against your sanctioned load or contract demand. A business with a small connection and a large bill may therefore need a load revision first. Plants up to 25 kW sit in a market band of ₹10.75 lakh to ₹13.50 lakh; anything larger is priced after a load study.
Tax and GST. A taxpaying business can claim 40% accelerated depreciation on solar power generating systems under Appendix I of the Income Tax Rules. GST on a supply-and-install contract is 5% on equipment and 18% on the 30% service share, about 8.9% blended, since 22 Sep 2025. Whether you can claim input credit depends on your registration and use, so ask your chartered accountant.
| Plant size | Units a year |
|---|---|
| 25 kW | 36,500 – 41,063 |
| 50 kW | 73,000 – 82,125 |
| 100 kW | 1,46,000 – 1,64,250 |
| 250 kW | 3,65,000 – 4,10,625 |
| 500 kW | 7,30,000 – 8,21,250 |
Indicative installed cost at 25 kW: ₹10.75–13.50 lakh (market range, not a quotation). Larger plants are priced after a load study of your bills and roof.
This is what we actually build.
Heaven Green Energy installations across India. Not stock photography, and not renders.
Roof, structure and wiring checks for commercial buildings
Commercial roofs in Ahmedabad are rarely empty. Chillers, cooling towers, water tanks, signage and telecom masts take space and throw shade, so the survey measures what is actually usable before any layout.
Usable roof area and shade
We map rooftop plant, tanks, lift rooms, hoardings and neighbouring towers, then trace shadows through summer and winter. Hotels and malls often have large flat roofs crowded with HVAC equipment. Where floor space is short, an elevated structure can carry modules above walkways while leaving service access to chillers and cooling towers open.
Structure, wind and fire safety
Loading is checked against the slab or shed the plant sits on. Older showroom buildings and school blocks sometimes need a structural opinion before a heavy array goes up. We design anchoring for wind at the building's height, keep fire exits, refuge areas and terrace doors clear, and avoid cutting waterproofing wherever possible.
Electrical integration and approvals
Cabling runs from roof to the LT panel or meter room, sized for distance and current. We fit DC and AC isolation, surge protection and earthing the licensee inspects. In a hospital, the plant connects on the grid side, away from critical circuits fed by generators or UPS. The single-line diagram goes with the application.
Approvals: who does what.
Approval runs through whichever licensee bills you, Torrent Power or UGVCL. We prepare the technical file, and your business signs as the consumer on record for that connection.
Confirm licensee and collect papers
We read the bill to confirm the licensee and consumer number. We then gather ownership or lease proof, the authorised signatory's letter and, for a complex, the association's consent for using the roof.
UsApplication and feasibility
The file carries the plant rating, single-line diagram and equipment datasheets. The licensee checks it against sanctioned load or contract demand and the local network before approving, or asks for a load change.
Us, then Torrent Power or UGVCLInstallation and inspection
Installation starts only after approval. Licensee engineers then inspect earthing, isolation, protection settings and the metering point before they allow the plant to run parallel with the grid.
Us, then Torrent Power or UGVCLMeter change and commissioning
The licensee installs the bidirectional or solar meter and records commissioning. Credit for exported units begins from that recorded date, so delays at this step cost real generation.
Torrent Power or UGVCLThree ways to fund the plant.
Commercial owners usually pay in one of three ways. The right one depends on cash flow, tax position and whether you own or lease the building.
Outright purchase
Buying the plant puts the asset on your books, which is what lets you claim 40% accelerated depreciation. It suits profitable firms that own their premises. You pay in stages tied to milestones such as material delivery and commissioning, and you keep every unit the plant generates for its working life.
Business loan with EMI
Banks and NBFCs lend for commercial rooftop plants against your financials. We introduce our finance partner and supply the quotation, layout and Bill of Materials a lender asks for. Compare the monthly instalment with the units the plant removes from your bill before you commit, and check prepayment terms carefully.
OPEX or third-party ownership
A developer owns the plant on your roof and sells you the power under a long contract. You spend nothing upfront, but you do not claim depreciation, and the contract binds the roof for years. It works for hospitals and schools that prefer to keep capital for core spending.
How the project runs.
Five stages take a commercial site from first call to a commissioned, metered plant.
Where we work from
Heaven Green Energy has one office, at Mota Varachha in Surat; we have no branch in Ahmedabad. We serve commercial sites in Ahmedabad and across Central Gujarat through our channel partner network and field engineering team. They carry out surveys, supervise installation and deal with Torrent Power or UGVCL on the ground. We tell you this before you sign.
Bill and load review · Day 1 to 2
We read twelve months of bills, confirm Torrent Power or UGVCL, note sanctioned load and look at when your building actually draws power through the day.
Roof survey · Day 2 to 5
An engineer measures usable area, checks shade from equipment and neighbouring buildings, inspects the slab or shed and traces the cable route to your LT panel.
Proposal and BOM · Within a week
You receive a layout, plant size, unit forecast, itemised Bill of Materials and price. For plants above 25 kW, the price reflects the load study, not a list rate.
Approval and installation · After feasibility
We file with your licensee and install once approved. Work is scheduled around trading hours, patient areas or school timetables to keep disruption low.
Inspection and handover · Set by the licensee
The licensee inspects and changes the meter. We hand over monitoring access, warranty documents and the maintenance plan, and start the AMC visits.
What businesses say after a year.
Commercial customers of Heaven Green, each shown with the city where the plant was installed. Their surveys, filings and licensee inspections followed the steps set out on this page.
Our showroom AC bills used to be ₹38k/month. After 25 kW solar, it's ₹3,500. 25-year warranty paperwork was registered same day. Smooth experience.
Commercial · Ahmedabad · 25 kW
80 kW on our hospital rooftop. Diesel backup running time cut by 60%. Heaven Green's structural design cleared all wind-load checks first time.
Commercial · Anand · 80 kW
150 kW at our textile factory dropped power costs by 68%. The ROI calculation they provided was spot-on, break-even under 4 years.
Commercial · Surat · 150 kW
Six things to check with any vendor.
- Offices, showrooms, clinics and schools use power in daylight, so most of their solar units are consumed on site.
- Torrent Power supplies its Ahmedabad licence area and UGVCL the rest; the licensee printed on your bill is the one you apply to.
- Each kW in Ahmedabad produces 4 to 4.5 units a day, so a 100 kW plant gives about 1.46 to 1.64 lakh units a year.
- PM Surya Ghar covers homes only; a taxpaying business claims 40% accelerated depreciation instead.
- Plants up to 25 kW sit in a ₹10.75 lakh to ₹13.50 lakh band; bigger commercial plants are priced after a load study.
- Hospitals keep their generator and UPS, because a grid-tied plant stops during an outage.
Commercial solar in Ahmedabad, answered.
Cost & output
What does a commercial solar plant cost in Ahmedabad?
How many units will a plant on my building produce?
How large a plant should my business install?
Licensee & approvals
How do I know if Torrent Power or UGVCL supplies my business?
Can a shop in a mall or complex install its own plant?
Who sets the net-metering rules for commercial consumers?
Roof & engineering
Our roof is crowded with chillers and tanks. Can we still go solar?
Will solar keep a hospital running during a power cut?
Is a tin shed roof on a showroom or warehouse suitable?
Finance & tax
Can my business claim accelerated depreciation on solar?
What GST applies to a commercial solar installation?
About Heaven Green