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Commercial & Industrial Solar EPC

Reduce your commercial electricity OPEX with solar

Solar EPC for factories, warehouses and large electricity consumers — feasibility, engineering, DISCOM & CEIG approvals and turnkey execution under one accountable contract. If your facility pays ₹1 lakh+ a month for power, your roof is an unbuilt asset.

Calculate my solar ROI Request a solar feasibility study

15+ years · 535+ projects · 18+ states · ISO 9001:2015 · Trusted by the Indian Army, Airtel, Dabur & Fortis

The problem

Industrial power is your fastest-rising fixed cost

Most industrial connections in Punjab, Haryana, Delhi NCR and UP pay ₹7–11 per unit once demand charges, fuel surcharges and time-of-day tariffs are counted — and tariffs move in one direction. A factory running a ₹5 lakh monthly bill spends ₹6 crore over ten years on electricity, most of it consumed in daylight hours when solar generates.

Rooftop solar converts that recurring OPEX into a one-time, depreciable asset you own. Typical C&I economics we engineer against: generation cost from your own roof in the ₹2.5–3.5/unit range over the plant's life, against a grid price of ₹7–11 — with payback commonly in 3–5 years and 25-year module warranties behind it.

Honest engineering

Why we won't promise you a number today

Any EPC quoting savings before seeing your bills is guessing. Real economics depend on your tariff structure, daytime load share, roof condition and your DISCOM's net-metering rules — and North India adds a fog-season generation dip that honest models must include. We publish why industrial solar underperforms and what a real performance guarantee covers precisely because inflated projections are this industry's core disease.

Start with the calculator's indicative estimate; commission the free feasibility audit for a number an engineer will sign.

Ready reckoner

Commercial solar plant sizes at a glance

Indicative figures at ~120 units/kW/month — the northern band; select your region in the solar calculator for Rajasthan, Gujarat, the South, East or North East — and current C&I EPC benchmarks. Final sizing needs a bill analysis and site survey.

Plant sizeShadow-free roofEst. generationIndicative EPC cost*
100 kW ~10,000 sq.ft~12,000 units/mo₹40–50 L
250 kW ~25,000 sq.ft~30,000 units/mo₹1.0–1.25 Cr
500 kW ~50,000 sq.ft~60,000 units/mo₹2.0–2.5 Cr
1 MW ~1 lakh sq.ft~1.2 lakh units/mo₹4.0–5.0 Cr

*Turnkey EPC range excluding taxes; varies with structure type, cabling runs and inverter class. Run your own numbers →

Built for

Facilities we engineer solar for

Factories & manufacturing

Daytime process loads are solar's best match — size against base load, bank the rest.

Warehouses & logistics

Huge roofs, light structures — structural verification decides the design here.

Cold storage

Round-the-clock compressor loads make every daylight unit count directly against the bill.

Hospitals

Solar + DG + grid switching engineered together — we build the electrical side too.

Hotels & institutions

High daytime HVAC loads; solar sized against chiller consumption, not brochure math.

Schools & campuses

Predictable day loads and large roofs — among the fastest paybacks we see.
The Secured Engineers method

From electricity bill to commissioned plant

1

Bill & load analysis

12 months of electricity bills, tariff structure, sanctioned load and daytime consumption profile — solar is sized to what you actually use, not what the roof can hold.

2

Site, structural & shadow survey

Roof structural adequacy, shading study and usable-area mapping. Old sheds get a structural verdict before a single panel is priced.

3

Engineering design

String sizing, DC/AC ratio, inverter selection, earthing and lightning protection, and grid-protection design your electrical inspector will actually pass.

4

Approvals — in parallel

Net-metering / open-access application, CEIG approval and DISCOM coordination filed alongside procurement, not after installation. Approvals are our core competence across MEPF.

5

Procurement & execution

ALMM-listed Tier-1 modules, named-brand inverters, in-house installation teams — the same teams that build our fire and electrical packages, under one project head.

6

Commissioning, net-metering & O&M

Synchronisation, meter installation, performance ratio verification at handover, and optional AMC with generation monitoring thereafter.

Why one contractor matters: we also build electrical substations, fire systems and HT/LT infrastructure — so solar integration, grid protection and CEIG approval are engineered by the team that does this for entire factories, not bolted on by a panel installer.

Proof, not promises

Engineering evidence you can read before you call

27 solar engineering guides published and counting — written by the delivery team, not a content agency.

Google Reviews

Rated 5.0 on Google

5.0/5 · 8 Google reviews

Verified reviews from our Noida Google Business Profile.

Mohammad Samsad
★★★★★
Best 👍👍👍👍👍
Nitin Jain
★★★★★
Great work practises and excellence in project execution. All in one solution with total MEP covered.
Sushila Maurya
★★★★★
Fantastic work.
Read all reviews on Google Write a review
Straight answers

Commercial solar questions, answered by engineers

What payback period can a commercial or industrial solar plant realistically achieve?

Most C&I rooftop projects we engineer land in a 3–5 year payback band. Where you fall in that band depends on your tariff (₹7–11/unit for most industrial connections), how much of the generation you consume on-site, roof condition and DISCOM policy. Payback is a calculation, not a promise — run your numbers in our solar calculator, then let us verify them against 12 months of your electricity bills.

How much roof area does a commercial solar plant need?

Plan around 100 sq.ft of shadow-free roof per kW as a working figure — so roughly 10,000 sq.ft for 100 kW and about an acre of roof for 1 MW. Actual density depends on roof type, orientation and walkway/maintenance clearances. We confirm usable area with a structural and shadow survey before any design is priced.

Do you handle net metering and DISCOM approvals?

Yes — in-house, not through a liaison agent. Net-metering or open-access applications, load sanction checks, CEIG chartered-electrical-inspector approval and synchronisation with the DISCOM are part of our EPC scope. Approval timelines vary by state and DISCOM, which is why we file them in parallel with procurement instead of after installation.

Net metering, captive or open access — which is right for my facility?

It depends on your sanctioned load, state policy and consumption profile. Rooftop net metering suits most factories consuming their own generation. Above ~1 MW of demand, third-party or captive open-access solar can beat rooftop economics in some states. We model both against your bills before recommending either.

What size solar plant does my factory need?

Size to your daytime base load, not your roof. A plant sized purely to fill the roof can overshoot what net-metering rules or your consumption can absorb, stretching payback. We size against 12 months of consumption data, your sanctioned load and your DISCOM's banking rules — the same method covered in our sizing guides.

Do you provide O&M after commissioning?

Yes. Generation monitoring, scheduled cleaning regimes, inverter and string-level fault attendance, and annual performance reporting are available under AMC. A solar plant that isn't monitored quietly underperforms — module soiling and single-string faults routinely go unnoticed for months without it.

Go deeper

Pick your path

Solar for factories

The sizing logic — consumption, roof and DISCOM limits, with a worked ₹3 L/month example.

Industrial solar EPC

HT plants, DG interlocks, power quality — where integration engineering decides performance.

Solar EPC by state

Punjab · Haryana · Delhi NCR · UP · Rajasthan · HP · Uttarakhand

Free · 30 seconds

What would solar actually save you?

Three inputs. Your numbers appear before we ask for anything.

  1. 1 Your site
  2. 2 Your numbers
  3. 3 Full report
Roof type
CAPEX, bank loan or OPEX

Three ways to pay for it — and the one that suits you is a finance question, not a solar one

The engineering is identical in all three. What changes is who puts up the capital, who owns the asset, who carries the O&M, and who keeps the savings.

CAPEX

You own the plant

You fund it, you own the asset, and every rupee it saves stays with you.

Depreciation
Accelerated depreciation at 40% WDV in year one. On a typical corporate tax rate that is roughly 10–12% of project cost back as a year-one tax saving — confirm your own position with your CA.
Savings
You keep 100% of the generation. Nothing is shared with a developer.
Payback
Typically 3–6 years for C&I rooftop at a healthy tariff. Yours depends on your blended tariff, region and roof — the calculator gives your number, not an average.
Asset
A 25-year asset on your balance sheet, with the loan (if any) usually clear inside 5–7.

Trade-off: You fund the capital and carry the O&M.

Compare on lifetime rupees
BANK-FINANCED OWNERSHIP

You own it, a bank funds most of it

A lender funds the bulk of the plant against a contribution from you. You still own the asset at the end.

Your contribution
Not zero — this is the number most often misstated. The published captive schemes we checked want 20–25% of project cost: SBI Surya Shakti sets 20% minimum for captive projects and states deviation is not permitted; Indian Bank IND-SURYA SHAKTI asks 25% on equipment and erection. Read 27 Sep 2026 — re-check before you budget on it.
Security
Expect the financed assets hypothecated, plus a lien or mortgage over the land and building the plant stands on. Personal guarantees from directors are common.
Tenure
Commonly 10–15 years door-to-door including any moratorium, which is what lets the EMI sit below the monthly saving on a healthy tariff. Whether it actually does is arithmetic, not a promise — the EMI calculator uses your numbers.
Who decides
The lender, not us. SEPL prepares the technical pack it asks for — system design, BOQ, generation estimate and commissioning evidence. We do not assess your credit, submit applications on your behalf, or promise a sanction.

Trade-off: You take on a repayment obligation and the O&M, and the lender takes security over the building.

Test it against your own EMI
OPEX / RESCO / PPA

You buy the output

An investor or developer builds and owns the plant on your roof, and you buy the units it makes. This is how the model works in the market — whether a given project qualifies is a question for assessment, not a standing SEPL offer.

Capital
No upfront plant CAPEX from you, and the plant stays off your balance sheet. That is not the same as free — you take on a PPA with a tariff, a term, and usually a minimum-consumption or deemed-generation obligation.
Tariff
A per-unit rate agreed in the contract, normally below your current DISCOM tariff. Check the escalation clause — it decides the deal.
Risk
Performance and O&M sit with the developer for the contract term.
End of term
Read the transfer clause carefully. Some contracts hand you the asset; others do not.

Trade-off: Smaller saving, usually more total cost than owning across 25 years, and you give a third party rights over your roof for the term.

Model a PPA offer you've been sent

Planning solar? Discuss finance options with SEPL.

Request a project-specific review of bank-financed ownership and investor-funded alternatives. Availability, borrower contribution and terms depend on project assessment and the lender or investor.

Request a solar finance assessment

Published borrower contribution on the captive solar schemes we checked (2026-09-27): State Bank of India Surya Shakti Solar Finance — 20% minimum for captive projects, with deviation not permitted; 25% minimum for other-than-captive; Indian Bank IND-SURYA SHAKTI — 25% on the cost of the equipment and erection charges. SEPL is an EPC contractor, not a lender — we are not presented here as a partner of any bank, and the loan decision is the lender's.

Want to see what a real proposal looks like before you talk to anyone?

We'll send a worked 500 kWp commercial example — layout, BOQ structure, generation model and the full CAPEX-versus-PPA comparison. A sample, not a quote for your site.

Request sample 500 kWp ROI proposal

Figures above are indicative and depend on your tariff, region, roof and tax position. Tax treatment changes — confirm depreciation and input-credit specifics with your CA before you commit. We put the assumptions on screen rather than in a footnote.

Statutory approvals

100% DISCOM Net-Metering & CEIG Approvals Handled In-House — Zero Bureaucracy for You.

Approvals are our core trade as an MEPF contractor — not something we sub out to a consultant and hope for. You sign, we file, we follow up.

  1. 1

    Feasibility & application

    Load study, single-line diagram and the net-metering application prepared and filed.

  2. 2

    CEIG / Electrical Inspector

    Drawings, test reports and the inspection itself — coordinated and attended by our team.

  3. 3

    Synchronisation & meter

    Bi-directional meter, DISCOM sign-off and grid synchronisation, through to commissioning.

Book a free on-site feasibility & shading analysis

The makes we specify

We are vendor-neutral and buy on bankability, warranty terms and service reach — not on whoever is discounting hardest this quarter. Final makes are fixed in your BOQ and agreed before order.

Modules

  • Waaree
  • Adani Solar
  • Vikram Solar
  • Tata Power Solar
  • Premier
  • RenewSys

Inverters

  • Sungrow
  • SMA
  • Fronius
  • FIMER
  • Delta
  • Growatt

Metering & monitoring

  • Secure
  • L&T
  • Schneider

Listed makes are those we specify and procure against. Names and marks belong to their respective owners; listing them indicates the equipment we install, not endorsement or an exclusive partnership.

Get a feasibility answer this week

Send us a recent electricity bill and roof photos on WhatsApp — an engineer (not a salesperson) will tell you whether solar makes sense for your facility, and how much of it.

Request a Solar Feasibility Study → +91 70099 85817
ONE PARTNER. END TO END. You focus on your business — we handle the rest.
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