Finding Right RTS Vendor

Making Right Choices on Solar Solutions

Few tips before deciding Solar Rooftop Photovoltaic (SRTPV) 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 among on-grid/off-grid/hybrid/zero export solar options. On-grid solution need NOT be always 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 due to lower buy-back tariff. (Refer to SmartEco FAQ).
  • Evaluate various 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 to have warranty assurance for 25 long years.
  • Check customer feedback and vendor credentials from ‘technical expertise and local support’ perspective. Local presence of vendor definitely would help to minimise turn-around time when technical issues to be addressed post installation.  
  • Look at total cost of ownership(TCO)for the solution you are looking for, including all EXTRAs, lifetime O&M costs and arrive at ROI. Then decide what is right solution for you.
  • At times combination of grid-tie and small off-grid system may be right approach to go for, rather than single large sized on-grid/off-grid system. Your EPC vendor should guide you what is best for you based on current power consumption and future requirements.
  • Ask for vendor project site visit, meet and discuss with SRTPV owners on type of system choice they made, performance and value delivered,  installation experience and vendor support before deciding.

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

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


Help on RMS set-up, understanding/analysing RMS data and dashboard reports and guidance on performance monitoring and trouble shooting.

Additionally, facilitating efforts for arranging finance for solar projects, if you need any.

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 “.

Comparing Apples with Oranges w.r.t. SRTPV solutions

With experience, we have been trouble shooting, reviewing SRTPV design and suggesting remediation to performance issues for many SRTPV installations that are NOT done by us. Quite clearly, we see that not all installations are thoughtfully designed, thus resulting in underperforming SRTPV systems.

Here are few parameters to look at, while comparing solutions from some others VS solutions from SmartEco to help you in informed decision making.

Due-diligence & performance audit for 500KW+ RTS.

A large industrial client of Paschim Group, with over 500KW capacity rooftop solar installation invited SmartEco for analysing the power generation efficiency issues in their RTS installation at Belagola, Mysore.

SmartEco provided technical consultancy to review RTS design and address power generation issues.

A detailed remote data analysis for the power production of the installation, followed by design analysis and due-diligence at onsite to check design anomalies and reporting of recommendations.

Expected that the proper implementation of recommendations would result in over 20% improved power generation thus significant savings for the customer.

“Good place for Rooftop Solar Power Solutions. Good technical strength of the company helped to us trouble shoot the issues we had in our rooftop solar. "

- Mr. Gangadhara, Paschim group of companies.

SmartEco consulting methodology on RTS Performance Audit of large RTS installation power generation efficiency has helped Paschim Group in timely resolving of issues and saving significant revenue thru improved performance.







SmartEco Power systems Pvt. Ltd
SmartEco Power Systems pvt. Ltd.
SmartEco Power Systems Pvt. ltd.
SmartEco Power systems pvt. ltd.

In an on-grid solar system, solar panels will continue to produce power during the day. This power can either be used instantly or exported to the grid with no backup for power outages. If at any time the system runs out of power, it draws the same from the electricity grid. Hence, a user will never run out of power in this case. Similarly, any excess that is produced by the system is fed to the grid. The advantage of an on-grid system is that the user will get a credit in his electricity bill for the extra power he sent to the grid. So, his electricity bills will also reduce. Always assess your Home’s Energy Consumption, Solar Potential, Solar Electricity Needs, etc. before installing an on-grid solar system.

On-grid is the most common type of system used, Also known as grid-connected solar or grid-tied solar. The On-grid system is connected to the grid and no batteries are attached to the system. This type of systems allows the owners to get power from either the solar system or the utility grid. A major advantage of an On-grid system is that system exports any excess power generated back into the utility grid for which the owner gets paid credits. Whereas on the other side the solar panel system is unable to work efficiently during cloudy days or at nigh.

Working of On Grid Solar System

The light from the sun falls on the solar panels from where electricity is generated. This DC from the sun is converted into AC with the help of the inverter, which is then used by consumers in their homes or any commercial establishment. Till this stage operations of any solar system is the same. The main difference is beyond this point. After the electricitythat is consumed by us .

  • Very affordable
  • Increases the value of your home
  • No need to buy expensive battery storage
  • Very reliable
  • You get to use 100% renewable energy
  • Easy installation
  • Very resourceful and effective

Get Ready to Save the Environment and your Energy Bills !!

Get in touch with us and we will be very happy to study your requirement and come up with cost effective Energy saving solutions, that are both environment friendly and budget conscious.



We at SmartEco take great care to see that you have a wonderful experience with us and work together to have a great piece of rooftop solar power system. Come visit our experience center to get a better idea.

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