Choose right EPC Vendor

How to Choose Right EPC Vendor ?

Few tips before deciding on a RTS solution

  • Undertake an energy audit by knowledgeable EPC vendor (SmartEco does it for free) to assess the need of what capacity and what type of system (on-grid/off-grid/hybrid solar) needed based on your power requirements and budget.
  • Evaluate options among on-grid/off-grid/hybrid solar. On-grid solution need NOT be a right choice always.
  • Assess the pros and cons of going for subsidyand external finance. Each has advantage/ disadvantages. Subsidy may not be a right choice if captive consumption is low and for 10KW installations (Refer to SmartEco FAQ).
  • Evaluate the OEM brands used as part of solution. Not all are equal w.r.t quality, brand image and warranty support credentials. Evaluate Indian VS imported brandsfrom long standing market presence perspective.
  • Check on EPC vendor credentials from ‘technical expertise and local support’perspective. Local presence of vendor definitely helps to minimise turn-around time when issues come up post installation.  
  • Look at total cost of ownership(TCO) for the solution you are looking for, including all EXTRAs, lifetime O&M costs before arriving at ROI. Then decide what is right solution for you.
  • Sometimes combination of grid-tie and small off-grid solutions are right approach to for, rather than one large sized on-grid/off-grid . Your EPC vendor should guide you what is best for you based on current power situation and exact requirements.
  • Ask for vendor project site visits, meet and discuss with RTS owners on system performance, vendor’s experience and support before deciding.

“ Our value-added services include liaison support with CESCOM and other agencies for seeking approvals, PPA process and synchronization.

We take care of procedural formalities of warranty claims with OEMs, CESCOM billing reconciliation issues during initial billing cycles.

We also coordinate efforts for arranging finance for solar projects, if you need any. ”


It is good to have an EPC vendor who supports you on all these. So that, going solar is made easy for you.

How to Choose a Right Installer / EPC Vendor

  • Experience and reputation: Look for a solar provider with a proven track record and go by positive feedback in the social media from customers. Check Google reviews and CSAT ratings. Because good customer experiences seldom go unnoticed.
  • Design/installationexperience : Choose one who can design that meets your specific needs and preferences, not someone force-fitting standard solutions to you. Check solution design capabilities on projects done at other places. There are many design anomalies that can impact power production if solution design is not done right.
  • Quality/Brands of components used :Vendors who use premier MNRE approved, quality panels/inverters/BOS components like cables, switches, mounting systems, battery bank and charge controllers etc. All are NOT tier-1 quality brands and all do not come with same warranty coverage.
  • Customer service :Go with someone approachable, quick to respond to your queries and concerns. Check for free post installation technical support offered and how well you are supported beyond that. Go by review feedback.
  • Cost and financing optionsoffered : Consider the total cost of ownership (TCO), including extras mentioned in the quote. Examine costs mentioned as EXTRAs. CESCOM fees/ facilitation charges, transportation costs, GST etc.  If NOT included in the quote,  would surprise you later.  (SmartEco commercial quote is all-inclusive end-to-end costs, unless specified otherwise). Also look for vendor who facilitates easy finance with pocket friendly EMI plans.
  • Liaison experience :Choose a vendor who can liaison with CESCOM, Govt Agencies, OEMs, Banks/NBFCs for many things that you don’t have to worry about.  e.g. efforts on getting PPA paperwork, CESCOM approvals, consolidating connections, addressing billing reconciliation issues, help warranty claims with OEMs, arranging finance etc. It would make going solar that much easier.
  • Finally, installation setup quality :  Theuse of different type/quality of mounting structures, custom fabricated VS nut-bolt assembly, long aluminium railings for GI roofings, panel array designs and # of charge controllers/inverters in an installation, proper remote monitoring setup to feed power generation data to remote data servers etc. All will count for delivery of a long lasting efficient solar installation. Unfortunately, you will come to know the lack of it only after installation is handed over to you. Make sure your EPC vendor is knowledgeable enough to address all your queries on these prior to engaging them.

“ The very reason that SmartEco gets requests from customers to undertake ‘Performance audit’  of their RTS installations,  hints at the fact that not all installations are designed right. The knowledge of grid-tie photovoltaic technology is important to have with installers to deliver a high performing RTS system to justify the ROI claims “.

“ Never choose an installation company arbitrarily.”

Rooftop Solar is a once in 25-years investment, go for a solution using top rated products

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