How To Start a Solar EPC Business in India 2026

Last updated August 25, 2026 (Originally published April 24, 2026)

Quick Answer

Why This Matters for EPCs

India installed 162.15 GW of solar capacity as of June 2026, and needs thousands of new rooftop installations every day to hit its 500 GW 2030 target. That volume creates real room for new entrants, not just established players scaling up. But choosing the wrong business model, or getting registration sequencing wrong, wastes months and capital a new business can't easily absorb. This guide covers which model actually fits a new entrant, what's mandatory before your first client, and how to land your first three installations with no existing track record.

The Four Solar Business Models

The biggest mistake prospective solar entrepreneurs make is choosing a model based on what they have heard about rather than what fits their capital, skills, and market. Each of the four models has a different economic structure, and mixing them without clarity leads to underinvesting in the model that actually fits.

The Installer / EPC model is the recommended starting point for most new entrants because it requires the least upfront capital, generates recurring revenue through AMC contracts, scales naturally into commercial and industrial segments, and has a clear path to the plant developer model for those who want to eventually own capacity. The rest of this guide focuses on this model.

Mandatory Registrations — What You Actually Need

Business registration: Sole proprietorship is the lowest friction option for a single person start. A Private Limited company or LLP is recommended once you have two or more founders or plan to take on external investment. GST registration is not automatically required from your first rupee of revenue, it becomes mandatory once your aggregate turnover crosses ₹20 lakh in a financial year for most states (₹10 lakh in special category states including the Northeast, Himachal Pradesh, and Jammu & Kashmir), since EPC work is generally treated as a supply of services under GST law. A business genuinely starting with the ₹3-5 lakh capital range described below can operate below this threshold for a real stretch of time. Two important exceptions override the threshold entirely, regardless of turnover: if you take on any inter-state work (a client in a neighbouring state), or register as an e-commerce operator or casual taxable person, GST registration becomes mandatory immediately. Many EPCs voluntarily register early anyway to claim input tax credit on equipment purchases and to look more credible to larger commercial clients, that's a legitimate business decision, just don't treat it as a legal requirement from day one.

Electrical contractor licence: Required by the Electricity Act 2003 and enforced by state electricity boards. The specific licence category depends on the scale of work. Check with your state's electrical inspectorate for the applicable category and qualifying requirements. Some states require the business to employ a licensed supervisor even if the founder is qualified.

MNRE empanelment for PM Surya Ghar: Not mandatory for general solar work, but required to install PM Surya Ghar residential systems with subsidy eligibility. Apply through the national portal after completing your first three to five installations — you need a project track record to qualify. Empanelment opens access to government scheme projects and gives your business a credibility marker that competitors who have not applied cannot claim. See the full PM Surya Ghar subsidy and eligibility guide here, once you're ready to start quoting subsidy-eligible projects.

DISCOM vendor registration: Each state DISCOM maintains its own list of approved solar installation vendors. Registration is required to submit net metering applications on behalf of clients. This is separate from MNRE empanelment and processed directly with the state electricity distribution company. Timelines vary, so start this process as early as possible in your target service area. Net metering approval itself follows a separate 7-step state process, worth reading once vendor registration is underway.

The Company Registration Process, Step by Step

For most first-time solar entrepreneurs choosing between sole proprietorship and a formal entity, here's the actual sequence:

Sole proprietorship requires no separate company registration at all, your business operates under your own PAN. You'll still need: a current account in the business's trading name (most banks require a GST certificate, Udyam/MSME registration, or a shop and establishment license as supporting documents, even if GST itself isn't yet mandatory for you), and Udyam registration (India's MSME registration, free and done online at udyamregistration.gov.in), which unlocks priority sector lending, collateral-free loan schemes, and delayed-payment protection under the MSME Act, worth doing early regardless of GST status.

Private Limited or LLP registration goes through the Ministry of Corporate Affairs' SPICe+ portal, typically completing in 4 to 10 working days: reserve a company name, file incorporation documents, obtain a Certificate of Incorporation, PAN, and TAN as part of the same integrated filing. Budget roughly ₹7,000-15,000 in government and professional fees for a straightforward Private Limited incorporation.

Electrical contractor license timing varies significantly by state and is often the longest step, apply as early as possible in parallel with company registration, not after.

Starting Investment for the EPC Model

A new solar installation business can be started for Rs 3 to 5 lakh if the founder has technical skills and does not need to hire staff immediately. The key insight is that solar equipment is procured per project, you do not hold Rs 20 lakh of panel inventory sitting idle. A typical starting breakdown: Rs 1.5 to 2 lakh for basic tools (solar irradiance meter, multimeter, cable crimping tools, drill, safety equipment), Rs 50,000 to 1 lakh for business registration and initial compliance, and Rs 1 to 2 lakh for working capital to bridge the gap between equipment procurement and client payment on the first project.

The First Three Clients to Target

Personal network first. A family member, friend, or neighbour with a monthly electricity bill above Rs 3,000 and a south facing rooftop is your ideal first client. They trust you before you have a track record, they will allow you to manage the installation timeline around your learning curve, and they will provide a genuine reference and a visible installation. Offer a competitive price on this project in exchange for a public testimonial and explicit referral ask.

A business owner in your local area second. Small commercial properties, a shop, a school, a medical clinic, a factory in a nearby industrial estate, have electricity bills of Rs 30,000 to 2 lakh per month. A 50 to 100 kW system represents a project where your proposal to revenue ratio is meaningful, the reference is commercially credible, and the installation is visible in a context that attracts further commercial enquiries.

A housing society or RWA third. A residential colony with 50 to 100 households is a lead funnel, not a single client. Install one system for a willing early adopter, handle their PM Surya Ghar subsidy correctly, and post the completed project in the colony WhatsApp group. One successful installation in a well connected society regularly generates five to fifteen enquiries within 60 days. More lead channels for a brand-new EPC are covered here, if personal network and RWA leads aren't enough to fill your pipeline.

On technical qualifications: A technical background in electrical engineering or installation is the fastest path to competence, but not the only path. The alternatives are hiring a qualified electrician as a Co-founder or early employee, partnering with an experienced installer for the first 10 to 20 projects while building your own technical understanding, or completing an MNRE or ITI solar technician certification course. What you cannot substitute is a genuine understanding of how solar systems work, without this, you cannot evaluate design proposals, manage installation quality, or discuss technical issues with clients credibly.

What EPCs Should Do Now

Common Mistakes New EPCs Make

• Assuming GST registration is required from day one. Most new EPCs can legitimately operate below the ₹20 lakh threshold for a real stretch of time, delaying launch to arrange GST registration wastes weeks for no legal reason.
• Treating MNRE empanelment as a prerequisite instead of a milestone. It requires 3 to 5 completed, documented projects to qualify, applying before you have that track record just means rejection and a wasted application cycle.
• Skipping Udyam/MSME registration because GST isn't mandatory yet. The two are unrelated. Udyam is free, and skipping it forfeits priority sector lending and payment protection for no reason.
• Applying for the electrical contractor licence after company registration instead of alongside it. It's usually the longest step in the sequence; running it in series instead of in parallel adds weeks to your timeline for free.
• Picking a business model based on what's talked about most rather than what fits available capital and skills. The dealer and franchise models get more discussion online, but the installer/EPC model fits most new entrants' actual capital position.

Where Reslink Fits for a New EPC

A new EPC operating on Rs 3 to 5 lakh in starting capital, per the numbers above, doesn't have budget for a separate design engineer, desktop design software with a training curve, or a dedicated proposal writer. That gap matters most exactly where it costs the most: closing your first personal-network client, the one judging you with no track record to point to.

Reslink's mobile design workflow means the founder, or the first salesperson hired, can walk the property, build the 3D design, run the shadow simulation, and deliver a client-ready proposal over WhatsApp before leaving the site, without a design team, without a trip back to the office, without separate proposal software. For a business that lives on referrals from that first residential install and that first RWA project, a professional 3D proposal delivered on-site is a credibility marker a hand-written quote doesn't provide.

It also compounds at the MNRE empanelment stage. That application requires photographic documentation of three to five completed projects. Generating that documentation as a byproduct of the normal design process, rather than as separate paperwork after the fact, saves exactly the kind of office-hours overhead a two-person team can't absorb.

See the full design-to-proposal workflow run on a single site visit → Book a demo

Frequently Asked Questions

Q1. Do l need a technical background to start a solar EPC business?

A technical background in electrical engineering or installation is the fastest path, but not the only one. You can hire a qualified electrician as a co founder or early employee, partner with an experienced installer for your first projects while building your own understanding, or complete an MNRE or ITI solar technician course (typically 3 to 6 months). What you cannot substitute is a genuine understanding of how solar systems work, without this, you cannot evaluate design proposals, manage installation quality, or handle technical questions from clients credibly.

Q2. How do I register with MNRE to do EPC work under PM Surya Ghar?

This registration is officially called MNRE empanelment. Apply through the PM Surya Ghar national portal at pmsuryaghar.gov.in. The application requires business registration documents, a GST registration certificate, proof of technical qualification (electrical contractor licence or equivalent), and a track record of completed solar installations with photographs. Most applications require a minimum of 3 to 5 documented completed projects. The empanelment is specific to a DISCOM service area, apply for each state DISCOM separately if you operate across multiple areas.

Q3. What is the difference between a solar dealer and a solar EPC?

A solar dealer sells equipment — panels, inverters, and accessories — to installers or end customers. They do not typically design, install, or commission systems. A solar EPC takes full responsibility for Engineering, Procurement, and Construction: they design the system, source all equipment, complete the physical installation, handle DISCOM approvals and net metering, commission the plant, and often provide ongoing AMC services. The EPC model has a higher revenue per project and builds a recurring AMC revenue stream that a dealership model cannot easily replicate.

Q4. How long does it take to complete the first solar installation as a new EPC?

For a residential 3 to 5 kW system, total project time from signed order to commissioned installation is typically 3 to 6 weeks. This includes design and proposal confirmation (1 to 3 days), DISCOM pre approval application (2 to 4 weeks, the longest step), equipment procurement (3 to 7 days), physical installation (1 to 3 days), and commissioning plus net meter installation (1 to 2 weeks after inspection). The DISCOM pre approval step dominates the timeline and is largely outside the EPC's control — set expectations with clients about this at the time of order confirmation.

Q5. Is GST registration mandatory when I start a solar EPC business?

Not immediately. GST registration becomes mandatory once your aggregate turnover crosses ₹20 lakh in a financial year in most states, or ₹10 lakh in special category states, since EPC work is generally treated as a supply of services. A business starting with limited capital can legitimately operate below this threshold for a period. Two exceptions make it mandatory regardless of turnover: doing any inter-state work, or registering as an e-commerce operator or casual taxable person. Many EPCs choose to register voluntarily before hitting the threshold anyway, to claim input tax credit on equipment and appear more credible to larger clients, but that's a choice, not a legal requirement from day one.

Sources

• IndiaFilings, "GST Registration Threshold in India: Turnover Limits Explained," confirms ₹20 lakh (services) / ₹40 lakh (goods) thresholds, ₹10 lakh special category state threshold, and mandatory-regardless-of-turnover exceptions.
• Union government reply, Lok Sabha, July 22, 2026, confirms 162.15 GW cumulative installed solar capacity as of June 30, 2026.
• Cross-referenced company-registration filing services (Khanna & Associates, IncorpX, Legal Suvidha), 2026, confirm SPICe+ processing typically completes in 4 to 10 working days end to end, and incorporation cost typically runs ₹7,000 to ₹15,000 for a straightforward Pvt Ltd filing.