Commercial rooftop solar in Surat.
Air conditioning, lighting and lifts run your Surat premises through the working day, exactly when a rooftop plant produces. We size the plant on twelve months of your commercial bill, design it for the roof you actually have and install it. We then file the connection with DGVCL or Torrent Power, whichever licensee bills you.
Book a survey for your business roof
Share your latest commercial bill and the roof type. An engineer calls back, checks sanctioned load and contract demand, and books a survey outside your busiest trading hours.
Prefer to talk? +91 63904 05060
The short answer
Commercial rooftop solar in Surat suits shops, showrooms, offices, hospitals, schools, hotels and textile market buildings because their heaviest load falls in daylight. Each kilowatt produces 4 to 4.5 units a day here. The plant connects through DGVCL or Torrent Power, depending on which licensee bills the premises. A 25 kW plant sits in a market band of ₹10.75 lakh to ₹13.50 lakh; bigger plants are priced after a load study.
Last reviewed 2 October 2026 · Heaven Green Energy engineering team
Which Surat businesses get the most from a rooftop plant
The best commercial candidates use most of their power between ten and five. That covers almost every trading, office and institutional building in Surat, with hotels and hospitals adding a heavy round-the-clock base load on top.
Surat runs on trade. Wikipedia counts over 800 cloth wholesalers in the city, and its Ring Road has long been described as the textile district. Around that trade sit showrooms, banks, coaching classes, clinics, private hospitals, schools and hotels. Each pays a commercial or non-residential tariff, and none of them receives the PM Surya Ghar residential subsidy.
What they share is a daytime profile. Shutters go up mid-morning, air conditioners start soon after, and the heaviest draw lands between noon and four, when a Surat roof is producing hardest. Units generated and used on the spot never pass through the meter as imports, so the plant works against the most expensive part of the bill first.
Ownership is the variable that trips people up. A standalone showroom or school owns its roof outright. A shop or office inside a multi-storey market building usually does not; the terrace belongs to the building society or association, and each unit has its own meter. We check that position on the first call, because it changes who signs, which connection the plant feeds and how large it can be.
Shops, showrooms and offices
Display lighting, split air conditioners, computers and signage run from opening to closing time. A standalone showroom with its own roof is the simplest commercial job in Surat. Offices in leased floors need the landlord's written consent and usually connect to a common or landlord meter.
Hospitals and clinics
Operating theatres, ICUs, chillers, sterilisation and imaging equipment draw heavily all day and continue at night. Solar carries part of the daytime block and reduces the hours a diesel set runs during outages only if the design includes that. We keep critical-load wiring separate from the solar circuit.
Schools, colleges and coaching centres
Classrooms, labs, computer rooms and fans load the building almost entirely between eight and four, which matches solar output closely. Vacations in May and around Diwali leave surplus that goes to the grid. School roofs are often large and flat, with access controlled for safety.
Hotels and textile market buildings
Hotels run kitchens, laundry, water heating and guest-room cooling every day of the year. Textile market buildings carry hundreds of small shops, plus lifts, corridor lights and shared cooling, mostly on separate meters. The common connection is usually the one a market terrace plant can serve.
How the numbers work for a commercial building
Measure a commercial plant in units first. The rupee value depends on your tariff category, demand charges and settlement terms, so we calculate it from your own bill during the survey rather than print a figure here.
Units are the honest yardstick. A 25 kW roof plant in Surat yields roughly 100 to 112 units a day, about 36,500 to 41,000 units a year. A 50 kW plant doubles that to around 73,000 to 82,000 units. At 100 kW the annual figure reaches about 1.46 to 1.64 lakh units. Lay those beside twelve months of your own bills and you can see what share of consumption the roof can carry.
Daytime match decides the value. Units consumed directly on site displace imports at the full commercial rate. Exported surplus is settled under the GERC framework that applies on your application date, which may value it differently. That is why a school shut in May or a showroom closed on its weekly day off should be sized on actual usage, not on roof area. Sanctioned load and contract demand also cap the plant, and the licensee checks both at feasibility.
Tax helps a taxpaying owner. Solar power generating systems carry 40% accelerated depreciation under Appendix I of the Income Tax Rules, claimed against business income. Charitable trusts running schools or hospitals often have no taxable income to set it against, so ask your accountant. GST has been 5% on solar equipment and 18% on the 30% service share of a supply-and-install contract since 22 Sep 2025, about 8.9% blended. A GST-registered business may be able to claim that as input credit; your accountant confirms whether it applies.
| 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.
Commercial roofs in Surat: what we check first
Commercial roofs carry more equipment and more people than homes. The survey records outdoor units, signage, tanks and access before any layout is drawn, then tests the structure and the electrical room.
Roof type and usable area
Showrooms and schools usually have RCC slabs; some newer offices and warehouses have metal sheet roofs. Air-conditioner outdoor units, hoardings, water tanks and lift rooms cast shadows and must stay serviceable. We map the shadow-free area in winter, when shadows are longest, and plan around equipment rather than over it.
Structure, wind and public safety
Surat sits near the coast, and monsoon winds load an array hard. We design the mounting for the building's height and exposure, use hot-dip galvanised steel with corrosion-resistant fasteners, and seal every slab penetration. Hospitals, schools and hotels get walkways, edge protection and locked roof access, because visitors and staff share these buildings.
Electrical integration and approvals
The plant connects at your LT panel or, in larger buildings, on the side of the existing transformer the licensee approves. We fit protection, earthing, surge arresters and isolators, and keep it off the circuits that feed operating theatres or lifts directly. Every drawing goes to DGVCL or Torrent Power with the application.
Approvals: who does what.
The licensee named on your bill handles approval, and its procedure is set within the GERC framework. Start by confirming which licensee that is, then follow four steps.
Confirm licensee and consent
We read the licensee name and consumer number from your bill. Where you lease the premises or share a market terrace, we get the owner's or association's written consent before anything is filed, because the licensee asks for it.
UsApplication and feasibility
We file the application with system rating, single-line diagram and datasheets. The licensee checks the plant against sanctioned load, contract demand and the local transformer, then releases feasibility or requests changes.
Us, then DGVCL or Torrent PowerInstallation and inspection
Work starts only after feasibility. The licensee's inspector then checks protection settings, earthing, isolation and metering, and any electrical inspection the plant size requires is arranged before energising.
Us, then DGVCL or Torrent PowerMetering and commissioning
The licensee installs the bidirectional or generation meter the scheme needs and records commissioning. Settlement of exported units runs from that date, so a delayed meter means delayed credits.
DGVCL or Torrent PowerThree ways to fund the plant.
A business can pay outright, borrow, or buy power from a plant someone else owns. The right route depends on cash, tax position and how long you control the roof.
Outright purchase (CAPEX)
You own the plant from commissioning, claim accelerated depreciation if you pay tax, and keep every unit it produces. This suits owners of their premises with cash or a working-capital cushion. It is the cheapest route over twenty-five years, provided you will occupy the building for most of them.
Business or MSME loan
Banks lend for commercial solar against the business's books, and MSME schemes may apply to smaller firms. We introduce our finance partner and provide the quotation and technical papers the lender asks for. Compare the instalment against the units the plant removes from your bill before you sign.
OPEX or RESCO model
A developer owns and maintains the plant on your roof and sells you its output under a long agreement. You invest nothing upfront. It works for larger roofs with a long lease. Read the contract term, exit clauses and roof-access obligations carefully, because they bind you for years.
How the project runs.
Five steps from the first call to a commissioned plant feeding your premises.
Where we work from
Surat is home ground. Heaven Green Energy's head office is at Mota Varachha. The engineers who survey your roof, supervise installation and meet the DGVCL or Torrent Power inspector are our own Surat staff, not a subcontracted crew sent from elsewhere.
Bill review and survey · Day 1 to 3
We read twelve months of bills, sanctioned load and contract demand, then visit to measure the roof, inspect the electrical room and note ownership and access.
Design and proposal · Day 4 to 10
You receive a layout, shading study, plant size, annual unit estimate, written Bill of Materials and price. Plants above 25 kW are priced only after this load study.
Licensee application · Set by the licensee
We file with DGVCL or Torrent Power and answer their queries. Feasibility time depends on plant size and the local transformer, not on us.
Installation · After feasibility
Crews work in phases around your trading or patient hours. Roof work, structure, modules and wiring are supervised by our own engineers from Surat.
Inspection, meter and handover · Set by the licensee
After inspection and metering, we hand over monitoring access, warranty papers and the AMC schedule, and train your facility staff on safe isolation.
What businesses say after a year.
These are Heaven Green commercial customers, each shown with the city where the plant was installed. Your Surat project follows the same survey, licensee filing and inspection steps set out above.
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
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
Six things to check with any vendor.
- Read the licensee name on your bill first: Surat businesses are served by either DGVCL or Torrent Power, and a pin code alone does not settle it.
- Commercial premises get no PM Surya Ghar subsidy; a taxpaying owner claims 40% accelerated depreciation instead.
- Each kilowatt yields 4 to 4.5 units a day in Surat, so a 100 kW plant gives about 1.46 to 1.64 lakh units a year.
- Daytime consumption is what makes commercial solar pay, so size against weekday use and closures, not roof area.
- Shops and offices in market buildings usually need the association's consent and connect to the common meter.
- Plants above 25 kW are priced after a load study; any firm figure quoted before one is a guess.
Commercial solar in Surat, answered.
Cost & output
How much does commercial solar cost in Surat?
How many units will a commercial plant generate?
Why will you not quote a rupee saving or payback?
Licensee & approvals
Is my Surat business on DGVCL or Torrent Power?
Does the approval process differ between the two licensees?
Can a shop in a textile market building install solar?
Roof & engineering
How much roof area does a commercial plant need?
Will solar damage our roof waterproofing?
Can a hospital keep running on solar during a power cut?
Finance & tax
Can my business claim accelerated depreciation on solar?
What GST applies to a commercial solar plant?
About Heaven Green