Longman Suntech Energy introduces

Rooftop Solar PPA – Power Purchase Agreement

We make it easy for business and residential apartments to go Green with Solar unlike no other and unlike anytime before

Zero Initial Investment

We will install a world class rooftop solar power plant at your location for free

Free Maintenance & Monitoring

We will monitor the solar power plant and undertake regular maintenance for free

Electricity cheaper than Grid

You will only pay for electricity that you consume from the power plant at prices less than Utility or DISCOM prices

Valuable Green Credentials

Your business or residence can flaunt its Green and Low Carbon credentials and gain valuable accreditations

kWp Solar Installed
kWhs Green Power Generated
kg of CO2 emission reduced


How much can save on your electricity costs with our “Zero Down” Rooftop Solar power solutions depends on the amount of sunshine your location receives, area available for PV module installation as well the type of electrical connection you currently are subscribed to.
Please enter your details below and we shall get back to you soon with our best quotes.




PIN Code

Rooftop Area

Monthly Consumption

Monthly Bill

The Process

When you approach us for a “Zero Down” Rooftop Solar PPA solution, we undertake a three step process that leads to a world class rooftop solar power plant at your location with no investment from your end. The three steps involve – I Quote, Smart Install and LSE Monitor.

Please scroll over these steps to know more

I Quote

Once you express your interest in our Rooftop Solar solution, our solar experts (not regular sales people) develop a highly customized solution ideal for your location and consumption Based on this, we give you a great electricity price quote – the cheaper price for electricity that you will pay in future

Smart Install

Once you accept our offer and contract with us for a “Zero Down” Rooftop solar solution, our installation team with a superior experience and knowledge will install a world class highly customized rooftop solar solution The power plant installed using our proprietary designs and techniques will be a thing of pride for your business or residence

LSE Monitor

We have developed some of the industry leading maintenance processes and monitoring techniques. Thus the rooftop solar power plant installed at your location will be monitored 24 X 7 from our Chennai based Tech center for performance in addition to planned, regular onsite preventive maintenance

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Our Latest Projects

A Quick View of Longman Suntech Energy’s projects spanning every new technology advancement

The 54 kWp rooftop solar power plant is Longman Suntech Energy’s first rooftop solar power plant in the hospitality sector for Accor Hotels.


The solar power plant powers Accor’s ibis Gurgaon Golf Course Road facility and is offered to the facility by Longman on a long-term PPA (Power Purchase Agreement) basis. The solar power plant is remotely monitored, billed and maintained using cutting-edge technology by Longman for the entire PPA term at zero cost to the hotel facility. We have uniquely designed the raised module mounting structure to gel into the design of this 4-star hotel itself.

The 50 kWp Rooftop Solar power plant at HIMT College is a state of the art rooftop solar installation by Longman. This also incidentally marks Longman’s entry in the educational sector.


This power plant is spread across one big rooftop and two adjoining smaller rooftops in a very clever manner to maximize the rooftop space available. The power plant is synchronized to the facility’s Grid supply and helps HIMT College – one of the leading maritime training center’s in the country – power its entire educational block facility from a renewable power source – Solar Power – for the next 25 years.

The 500 kWp Rooftop Solar power plant is currently India’s largest rooftop solar power plant in an healthcare facility. The Photo-Voltaic module installation for this power plant is spread across six different building rooftops in the unique and one of the largest healthcare destinations in the country – Velammal Medical Village.


The power plant is synchronized to the facility’s Grid supply at the substation level and helps this massive healthcare outlay enjoy Green Power for the next 25 years.

See what our clients are saying

  • Longman has done a great job by completely cutting down our Diesel costs with the solar power plant they installed on our vacant rooftops.

    Dr Ram Mohan RaoDirector, Padmini Urology Clinic
  • Longman helped our residential complex – Ankur Grand Apartments in Chennai to be one of the first residential towers to go green using their unique rooftop solar PPA offering

    Mr Tilak ChandEx Income Tax Commissioner, Chennai & Secretary, Ankur Grand Apartments
  • We proudly handed over our new 685 unit residential apartment complex in Mumbai – Orchid Suburbia to its occupants with a rooftop solar plant to power the common areas. Thanks to Longman !

    Mr Jignesh Mehta and Mr Harshil MehtaJP Developers – Builders of Orchid Suburbia