Factory rooftop solar in the Mandal–Becharaji SIR.
Press shops, paint lines and component machining in the Mandal–Becharaji Special Investment Region all run through daylight, which is when a rooftop plant produces. Heaven Green Energy designs the array around your shed and your UGVCL connection, using modules as an authorised channel partner of Adani and Qbits inverters, then maintains it.
Request a plant study in the SIR
Send your last twelve UGVCL bills and the plot or unit location. An engineer replies with a survey slot and a short list of drawings to keep ready.
Prefer to talk? +91 63904 05060
The short answer
Factories in the Mandal–Becharaji Special Investment Region buy power from UGVCL, so a rooftop plant here is approved and metered by UGVCL under GERC rules. Every kilowatt yields 4 to 4.5 units a day, which puts a 250 kW array at 3.65 to 4.1 lakh units a year. Industrial units get no PM Surya Ghar subsidy but can claim 40% accelerated depreciation. Large plants are priced after a load study.
Last reviewed 2 October 2026 · Heaven Green Energy engineering team
What the Mandal–Becharaji SIR is, and what that means for your roof
This is a Special Investment Region built around vehicle manufacturing, spread across Mandal taluka in Ahmedabad district and Becharaji taluka in Mehsana district. Its roofs are large, its shifts are long, and its loads are mostly daytime.
Gujarat's list of state agencies includes a Mandal Becharaji regional development authority, based at Becharaji, which plans the region. Becharaji is a temple town and taluka headquarters in Mehsana district. Mandal is a taluka of Ahmedabad district, reached from Viramgam along State Highway 18. Inside the region, GIDC's 2026-27 allotment list for Ahmedabad shows Mandal (Japanese Industrial Zone) estates in two phases, alongside its older Viramgam estate.
The power side is simpler than the geography. Two districts do not mean two licensees. UGVCL's 2019 list of sub-divisions has a Mandal sub-division and a Becharaji sub-division, and GERC's recent tariff orders name no private licensee for this region. Torrent Power's licences in Gujarat cover Ahmedabad, Gandhinagar, Surat, the Dahej SEZ and the Dholera SIR, which is a different investment region to the south. Still, check the licensee printed on your own bill before you apply, because a park developer can supply power under its own arrangement.
We will not tell you which manufacturers sit in the region, and you should doubt any installer who drops famous names. What matters is your own daytime load, your roof and your contract demand.
Press shops and body welding
Stamping presses and spot-welding lines pull heavy, pulsed current while the shift runs. Solar trims the units drawn from UGVCL during those hours. It does not smooth the peaks, so we size the inverter interface against the welding load and check voltage dips and harmonics at survey.
Paint shops and curing ovens
Paint booths need constant air handling, and curing ovens add fans, pumps and controls even where heat comes from gas. That electrical base load runs all day, which suits rooftop generation well. Paint shop roofs also carry ducts and exhaust stacks, so shading and access shape the layout.
Component machining and moulding
Tier suppliers run CNC machines, injection moulding, compressors and chillers on one or two shifts. The daylight shift lines up with generation, and the second shift draws from the grid. We map both shifts from your meter data before choosing the plant size.
Warehousing, logistics and stores
Parts stores and dispatch sheds have big roofs and small loads: lighting, charging docks and fans. On their own they would export most of what a full-roof plant produces. We cap such plants to on-site use unless the GERC banking terms for your connection make export worthwhile.
Sizing a plant in units, not promises
A factory plant earns its keep through units you no longer buy. Your tariff category, demand charges and shift pattern decide the rupee value, so we work in units here and put the money figures in your written proposal.
Daylight consumption is the starting point. A shadow-free roof in this part of Gujarat returns 4 to 4.5 units per kW per day across the year. That makes a 100 kW array about 1.46 to 1.64 lakh units a year, and a 500 kW array about 7.3 to 8.2 lakh. Set those numbers beside what your meter records between roughly nine and five. The share used on site is what you value most.
Contract demand limits the size. UGVCL approves a plant against your sanctioned load or contract demand, so the roof is rarely the binding constraint for a large unit. Expect fewer units bought, not a lower maximum demand. A press line can still hit its peak on an overcast afternoon. We read a full year of bills, and HT interval data where you have it, before we commit to a size.
Tax replaces the household subsidy. PM Surya Ghar covers homes only. Your business can claim 40% accelerated depreciation on solar power generating systems under Appendix I of the Income Tax Rules. From 22 Sep 2025, solar equipment carries 5% GST and services 18%, with services taken as 30% of a turnkey contract, so the blended rate is about 8.9%. For a sense of scale, the indicative installed market band at 25 kW is ₹10.75 lakh to ₹13.50 lakh, roughly ₹43,000 to ₹54,000 per kW. Plants above that are priced after a load study, since structure, cable length and HT metering move the cost.
| 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.
Engineering for long-span industrial roofs
Newer sheds here were built for production, not for an array. We check three things before quoting: how much weight the roof can take, how the plant behaves in wind and fire, and how it ties into your substation.
Purlins, sheeting and added weight
Pre-engineered buildings have light purlins sized close to their design load. We record purlin section and spacing, sheet profile, coating condition and any roof insulation. Then we calculate the extra dead load and wind uplift from the array. If the margin is thin, we propose a lighter rail system or reinforcement before you sign.
Wind, walkways and fire safety
Fixings go into purlins through sealed clamps or standing-seam clips, never into bare sheet. We keep walkways clear for cleaning, leave space around ridge vents, skylights and exhaust stacks, and plan fire access. The structure is bonded to earth, and lightning protection is matched to the roof height and layout.
HT connection, protection and approval drawings
Most large units here take supply at HT through their own transformer. The plant then connects on the LT side, behind your metering, with Qbits inverters placed near the LT panel. We design isolators, surge protection, earthing and anti-islanding settings, then submit the single-line diagram UGVCL needs to review.
Approvals: who does what.
UGVCL must approve and inspect your plant before it connects. A complete file with accurate drawings gets through faster, so we prepare it and stay with it until commissioning.
Load study and design file
We study your bills, connection type and contract demand, survey the roof and the LT panel, then produce the plant rating, layout and single-line diagram. This file is what UGVCL reviews, so we get it right first.
UsApplication to UGVCL
We submit the application with your consumer number, plant capacity, drawings and equipment datasheets. UGVCL checks it against your sanctioned load and the local network, then approves it or asks for revisions.
Us, then UGVCLBuild and safety clearance
We install to the approved drawings and record earthing values, insulation tests and protection settings. Where your plant size needs Electrical Inspectorate clearance, we compile and follow up that file as well.
UsInspection and connection
UGVCL inspects the plant and installs or certifies the meters. Once it energises the connection, generation shows on your bill. Our engineer attends the inspection so any query is closed on site.
UGVCLThree ways to fund the plant.
How you fund the plant decides who claims depreciation and who carries the asset. Match the option to your tax position and capital budget.
Buy it on your balance sheet
Your company owns the plant and claims 40% accelerated depreciation in the year it is first used. This works best for a profitable unit paying tax. All generation is yours, and an AMC with us covers cleaning schedules, periodic inspection, inverter checks and performance reporting.
Term loan or equipment finance
Banks and NBFCs fund solar for manufacturers, and ownership, along with depreciation, stays with you. We provide the quotation, bill of materials and generation estimate a lender asks for. The lender fixes the rate and tenure, so compare total cost across offers, not just the EMI.
Third-party owned (OPEX)
A developer installs and owns the plant on your roof and bills you for each unit delivered. You avoid capital outlay but give up depreciation. Read the tenure, exit and buy-out clauses and the roof access terms closely, because the contract lasts as long as the plant does.
How the project runs.
Five steps from your first message to a running plant. You approve every drawing before it reaches UGVCL.
Where we work from
Heaven Green Energy's only office is at Mota Varachha, Surat. We serve the Mandal–Becharaji region and the wider Central and North Gujarat belt through our channel partner network and field engineering team. They carry out surveys, supervise installation and handle UGVCL coordination on site. We would rather you know this before signing than after.
Bills and screening · Day 1
You send a year of UGVCL bills and the unit location. We check connection type, contract demand and daytime use, and tell you honestly whether a survey is worth your time.
Site and load survey · Week 1
An engineer measures the roof, purlins, obstructions and cable routes, and inspects the LT panel and transformer room. Where useful we log the load to see the real shift profile.
Design and quotation · Week 2
You get the layout, single-line diagram, itemised bill of materials and a generation estimate in units. The price comes from this design, never from a per-kW rate card.
Approval and build · Weeks 3 to 8
We file with UGVCL, procure Adani modules and Qbits inverters, and install in windows that avoid production stoppages. Roof penetrations are sealed the same day they are made.
Commissioning and upkeep · After approval
UGVCL inspects and connects the plant. We hand over test records and warranties, switch on monitoring, and begin the agreed maintenance schedule.
What businesses say after a year.
Plants we have built for businesses, each shown with the city where it actually stands. None is inside the Mandal–Becharaji SIR, and we make no such claim.
250 kW industrial system on our chemical plant. Generation has been 8% above estimate every month. Their O&M team is responsive.
Industrial · Bharuch · 250 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.
- UGVCL supplies the Mandal–Becharaji SIR through its Mandal and Becharaji sub-divisions, and GERC's tariff orders show no separate licensee for the region.
- A kilowatt of rooftop solar yields 4 to 4.5 units a day here, so 250 kW gives about 3.65 to 4.1 lakh units a year.
- Factories cannot claim PM Surya Ghar. They claim 40% accelerated depreciation on the plant instead.
- Turnkey GST blends to about 8.9%: 5% on equipment plus 18% on a 30% service share.
- Contract demand and daytime load set the plant size, and HT units usually connect on the LT side.
- Pre-engineered shed roofs need a purlin and uplift check, and large plants are priced only after a load study.
Industrial solar in Mandal–Becharaji, answered.
Cost & output
What does a factory rooftop plant cost in the Mandal–Becharaji SIR?
How many units does a 500 kW plant produce here?
Will solar lower the maximum demand on my HT bill?
Licensee & approvals
Who supplies power in the Mandal–Becharaji SIR: UGVCL or someone else?
What does UGVCL need before connecting an industrial rooftop plant?
Who sets the banking and net metering terms for a factory plant?
Roof & engineering
Can a pre-engineered shed in the SIR carry a solar array?
Can panels go on a paint shop or a roof with exhaust stacks?
How does the plant connect if my unit takes HT supply?
Finance & tax
Is there a subsidy for factory solar in the Mandal–Becharaji region?
Which GST rate applies to an industrial solar contract?
About Heaven Green