On-Grid Or Grid-Connected Roof-top system is a solar power system which is connected to the utility grid. These are mostly used in utility scale projects to supply electricity to the grid/DISCOM at pre-determined tariffs and are most suitable for areas where there are no or less power cuts and the customer pays high electricity tariffs. They can be easily synchronized with Diesel gensets to reduce the overall cost of electricity/unit and also allows system to avoid storage (batteries), which has a huge cost. It is specially helpful in case of insufficient solar power, as it switches to the grid for non-stop power supply.

Working of On-Grid Solution

Benefits of On- Grid OR Grid-Connected
  • Can help people save huge costs and generate some extra income
  • Can also be used for captive consumption.
  • Depending on state solar policy, excess generated electricity can be given back to the grid and the customer can be eligible for Net – Metering or FiT (Feed-in-Tariff)…
How Grid-tie Solar System Saves Your Money?
  • In case of excess generation ,not only the entire load runs on solar power, but also, the inverter sends the surplus energy into the grid.
  • The ROI of solar plants are typically 3 years after which all the generated electricity is free.
  • Hospital
  • Educational Institutions
  • Railway Stations
  • Communities & Campuses
  • Commerical Buildings
  • Factories
  • Shopping Malls
  • Resorts & Hotels


OFF GRID OR standalone power systems are not connected to the power grid . The energy produced is stored in batteries. They are suitable for areas that face frequent power cuts as it lets you save extra solar energy in batteries for use during power cuts. These type of Solar Power Solutions are also suitable for homes or facilities that do not have access to grid. A battery bank is set up which stores excess energy and can be used later when required. Here cost saving is not an advantage in such system because batteries have regular maintenance and recurring costs.

Working of Off-Grid Solution

Benefits of off- grid or standalone
  • Become completely independent from external energy supplies.
  • Avoiding spiraling diesel generation costs.
  • Such systems have an application in areas which do not have access to grid at all or have very limited access to grid.
  • They also have an application in areas which can’t afford power loss at all (Like: Hospitals, IT companies, Telecom towers etc.)
  • Hospital
  • Educational Institutions
  • Railway Stations
  • Communities & Campuses
  • Commerical Buildings
  • Factories
  • Shopping Malls
  • Resorts & Hotels


RK Telesystem is advancing the entire solar value chain by providing industry-leading solar energy solutions to customers. Smart energy solutions include packaged services throughout the entire solar power plant lifecycle from project development, design and engineering, project financing and investment, system components procurement, balance of system optimization, and project construction management through operations and maintenance.


Determination of the true solar potential of the facility is the first and the most important step. At the initial stage solar mapping tools are used to estimate the availability of space, identify any potential shading and obstruction issues, and knowing the approximate amount of energy that could be generated from the site. RK Telesystem’s feasibility assessment extends the scope of this initial evaluation for determining the suitability for Solar PV to providing actionable  recommendations and propose site-specific solutions that maximize long-term value.


  • Thorough on-site solar site survey.
  • Identification of site-specific system and technical risks and opportunities.
  • Analysis of Shading.
  • Analysis of radiation data, environmental factors, roof material and roof life for Rooftop systems.
  • Detailed economic and sustainability analysis of the project.
  • Providing Unbiased, expert guidance on all aspects of the solar project.

Matching advanced technology with optimal financial modeling is essential to maximize the benefits of solar energy. RK Telesystem ensures that its customers receive maximum return from solar energy. Based on extensive work in this space, we have developed a Financial Model for grid connected and Stand-alone Solar Power Projects which help the investors and interested businesses by understand the financials risks and returns of the opportunity. Sensitivity analysis is carried out to determine how variations in the inputs impact the financial feasibility of installing and operating a Solar Power Project.


  • Comparison of various system configurations that can be selected.
  • Financial models depicting the benefits of the system chosen
  • Financial Models showing the returns over the life of the project, ROI & IRR etc.
  • We can facilitate and assist in Renewable Purchase Obligation (RPO) & Renewable Energy Certificates (REC)
  • We can also support in Power Purchase Agreements(PPA)

RK Telesystem is committed to optimize the designs which helps maximize project value. We have a team of expert engineers and they ensure that the projects deliver maximum financial results. As all projects are different, So, We design projects to maximize electricity yield and reduce LCOE. We consistently follow design guidelines and standards that ensure maximized system safety, reliability, and economy of investment.


  • Detailed proposal evaluations across technology, capabilities and economics.
  • System Design & Engineering is performed based on the requirements of the clients.
  • Low cost, high – efficiency solar solution architecture is developed to achieve high yield and system performance.
  • Components are selected from some of the top manufacturers around the globe.

On account of increasing cost cutting pressures and meeting emerging emissions reductions targets, public Units, Corporates, and higher education institutions are focusing on sustainability. Going solar can dramatically reduce operating costs and exposure to future rate hikes. But Procurement of a right solar solution involves right set of specifications and criteria for proper evaluation of vendor bids. RK Telesystem’s supply chain network and procurement procedures command strong purchasing power and ensure the timely delivery of solar panels.


  • World class Procurement process.
  • Initial system designs and construction requirements
  • Integrated Planning, Logistics and Supply of components.
  • Reference checks on vendor performance, technology and financing
  • Pre-implementation walk through and risk assessment analysis.
  • Risk mitigation throughout entire installation process.
  • Complete Installation and commissioning of the system.

Operation and maintenance of the solar power plant is one of the most crucial factor for realization of project revenues. We aim to optimize our customer’s power plants to generate maximum amount of energy. Proper monitoring, maintenance, and performance optimization can drastically improve the long-term value of any solar project.


  • Developing site-specific monitoring, maintenance and reporting procedures.
  • Remote monitoring tools on your personal device.
  • Solar audits of existing systems from an electrical, physical, and financial perspective.
  • On-site visits related to Operation & Maintenance of the plant.
  • Performance optimization, repair, modification and replacement.
For Further Information

Please Contact Us for more information.