Four Solar is an engineering-led EPC out of Hyderabad, building grid-connected solar across industry, MW-scale plants, communities and homes — designed for how the plant actually runs in year ten, not just year one.
No form wall. Run the numbers first — talk to an engineer only if they add up.
Every system is sized against your actual consumption, roof or land, and the policy that applies to you — not a generic per-kW template.
Manufacturing units, warehouses and process industries. Designed around shift timings, connected load, tariff slabs and existing backup arrangements.
Model my business case
Offices, hospitals, hotels, campuses and public buildings. Planned around working hours, roof access and safety norms, with a management-ready generation summary.
Share bills & loads
Captive, group-captive and third-party PPA plants. Layouts aligned to land contour, evacuation capacity and substation reality before you commit capital.
Talk about a plant site
Decentralised plants, standalone pumps and feeder-level solarisation under PM-KUSUM, aligned to your state's notification and tender cycle.
Check if my land qualifies
Net-metered systems for independent homes and villas under PM Surya Ghar. Subsidy paperwork, DISCOM portal and meter swap handled by our team.
Check my home's savings
Lifts, pumps, clubhouses, street lighting and EV charging. Sized on common-area consumption, phased so residents are never without service.
Discuss my community
Ready-to-install kits — modules, inverter, structure, protection and accessories — shipped with an engineered Bill of Materials and optional EPC support.
Enquire about kitsTell us your monthly bill and the roof or land you have. We will tell you honestly whether solar makes sense at your site — including when it does not.
Get an honest readTwo inputs. Real arithmetic. You see system size, cost, subsidy or depreciation benefit, payback and 25-year savings — then decide whether to talk to us.
Sized on ~750 units a month at ₹8.00 per unit
Over 25 years that is roughly ₹19,80,000 kept in your pocket, and about 205 tonnes of CO2 never burned. Estimate only — a free site survey gives you the committed number.
Want this in writing? Leave a number and an engineer will call with a firm quote for your site. Nothing else needed.
Indicative pricing including structure, wiring, installation and net-metering support. Final quote follows the site survey.
| System size | Suits a bill of | Generation | Cost before subsidy | Central subsidy | You pay |
|---|---|---|---|---|---|
| 1 kW~80 sq ft | ₹800 – ₹1,200 | ~120 units / month | ₹65,000 | − ₹30,000 | ₹35,000 |
| 2 kW~160 sq ft | ₹1,500 – ₹2,400 | ~240 units / month | ₹1,20,000 | − ₹60,000 | ₹60,000 |
| 3 kW~240 sq ft | ₹2,400 – ₹3,600 | ~360 units / month | ₹1,65,000 | − ₹78,000 | ₹87,000 |
| 5 kW~400 sq ft | ₹4,000 – ₹6,000 | ~600 units / month | ₹2,75,000 | − ₹78,000 | ₹1,97,000 |
| 10 kW~800 sq ft | ₹8,000 – ₹12,000 | ~1,200 units / month | ₹5,20,000 | − ₹78,000 | ₹4,42,000 |
| Capacity band | Indicative rate | Typical capex | Yr-1 tax benefit | Effective cost | Payback |
|---|---|---|---|---|---|
| 25 kWSmall commercial | ₹46,000 / kW | ₹11,50,000 | − ₹1,15,000 | ₹10,35,000 | 3.6 yrs |
| 100 kWMSME / institution | ₹42,000 / kW | ₹42,00,000 | − ₹4,20,000 | ₹37,80,000 | 3.3 yrs |
| 500 kWIndustrial rooftop | ₹38,000 / kW | ₹1,90,00,000 | − ₹19,00,000 | ₹1,71,00,000 | 3.0 yrs |
| 1 MWGround-mount | ₹35,000 / kW | ₹3,50,00,000 | − ₹35,00,000 | ₹3,15,00,000 | 2.9 yrs |
Subsidy under PM Surya Ghar: Muft Bijli Yojana applies to residential grid-connected systems and is capped at ₹78,000 regardless of size above 3 kW. Commercial and industrial systems are not subsidy-eligible but qualify for 40% accelerated depreciation in year one; the year-1 benefit above assumes a 25% effective tax rate. Prices are indicative and vary with roof type, structure height, evacuation distance and component selection.
The things that decide whether a plant still performs in year twelve are decided in the first three weeks. That is where we spend our time.
Modules from Waaree, Tata and Solex; tier-one inverters. You get the exact make and model in the BOM before you sign, not after.
Shadow analysis, roof structure and access are checked before a system size is quoted. If your roof can't take it, we say so early.
DISCOM applications, net metering, inspection, PM Surya Ghar portal and subsidy claims. You sign; we file, follow up and close it out.
Plant-level monitoring on every system and SCADA on larger plants, so underperformance shows up as data rather than as a surprise bill.
Design, procurement, installation and commissioning by Four Solar staff. No subcontracted installs, so there is nobody to point at in year seven.
Collateral-free rooftop loans for homes and societies; OPEX and RESCO models for industry where capex is the blocker.
Four stages with a checkpoint before every major commitment. Timelines vary by state and scale — a residential rooftop with clean documents typically runs 30–45 days.
Recent bills, load profile, shadow and structure analysis on site
System size, layout and a written generation and savings estimate
Procurement, installation, DISCOM coordination and commissioning
SLDs, datasheets, warranties, monitoring and preventive maintenance
A sample across institutional, government, residential and parking-structure installations.
Covered parking integrated with rooftop solar — shading and generation from the same structure.
Rooftop plant designed around campus usage patterns, roof access and structural limits.
Planned in coordination with on-site departmental teams and utility inspection requirements.
15+ communities, 1,500+ homes connected. Common services, water systems and EV-ready infrastructure.
Verbatim from public Google reviews.
“It's been 9 months since we installed solar and everything has been working well. Recently we had an unrelated power issue and wanted to check the solar connection wasn't involved. They sent a field engineer the very next day. The fast response is very much appreciated.”
“I enquired after seeing them on the national portal. Ajay explained the installation process well. The team handled the process A to Z professionally without any hassles. Installation was smooth and the project supervisor was good.”
“Excellent from start to finish. Ajay was extremely professional and knowledgeable, and went above and beyond to work through every challenge that came up. His clear communication and hands-on approach made the entire experience stress-free.”
For homes: roughly ₹65,000 for 1 kW down to about ₹52,000 per kW at 10 kW, before subsidy. For commercial and industrial: ₹35,000–₹46,000 per kW depending on scale and roof type. The full tables are published above — we would rather you know before you call.
Under PM Surya Ghar, residential systems get ₹30,000 for 1 kW, ₹60,000 for 2 kW and ₹78,000 for 3 kW and above. The ₹78,000 is a hard cap — a 10 kW home system gets the same ₹78,000 as a 3 kW one. Commercial and industrial systems get no subsidy, but qualify for 40% accelerated depreciation in year one.
Typically 3–5 years for homes after subsidy, and 3–4 years for commercial and industrial after the depreciation benefit. Higher tariffs shorten it. The calculator above gives you a figure for your own bill.
ALMM-listed modules from Waaree, Tata and Solex, and tier-one inverters. The exact make and model appears in your Bill of Materials before you sign, not after commissioning.
About 80 sq ft per kW for a standard rooftop layout, and 100–120 sq ft per kW if you want walkways for cleaning access. Ground-mount plants need roughly 4 acres per MW.
Yes. Application, feasibility approval, inspection, meter swap, subsidy claim and the PM Surya Ghar portal are all handled by our team. You sign; we file and follow up.
Every plant ships with monitoring, and larger plants with SCADA, so a drop shows up as data before it shows up on your bill. Preventive maintenance and performance reviews are available under defined O&M contracts.
Yes — that is most of what we do in gated communities. Common-area loads are solarised in phases, planned around association operations, so lifts, pumps and lighting are never out of service.
Run your own numbers above, or leave a phone number and one of our engineers will call with a firm figure for your site. No obligation, and no form wall.
Leave a phone number and an engineer will call with a firm quote for your roof or site. No name, no email, no address.
An engineer will call within one working day.
