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An on-grid photovoltaic power system, or grid-connected PV system is an electricity generating solar PV system that is connected to the utility grid. A grid-connected PV system consist of solar panels, a power conditioning unit and grid connection equipment. They range from small residential and commercial rooftop systems to large utility-scale solar power stations. Unlike stand-alone power systems, a grid-connected system rarely includes an integrated battery solution, as they are still very expensive. When conditions are right, the grid-connected PV system supplies the excess power, beyond consumption by the connected load, to the utility grid.

> Power bill is reduced by export of surplus electricity.

> Cost of plant is less as it doesn’t require battery.

> Utmost utilisation of generated power.

> If adequate power is not generated, it will draw from grid.

> Less maintenance as only cleaning of panel once a week.

> Energy meter to be replaced by net meter for net consumption of export and import.

> Solar power likely to go waste during load shedding.

(Hybrid System can be used to avoid this condition).



An off-grid can be stand-alone power system or mini-grids typically to provide a smaller community with electricity. Off-grid electrification is an approach to access electricity used in countries and areas with little access to electricity, due to scattered or distant population. It can be any kind of electricity generation. The term off-the-grid (OTG) can refer to living in a self-sufficientmanner without reliance on one or more public utilities.

> Power will be available for limited period even in the absence of grid supply.

> Back up depends on size of the battery.

> More space and attention required.

> Battery maintenance is a cumbersome process.

> Replacement of batteries once in 3yrs.

> Generation loss, due to charging and discharging of batteries.

> Cost of the system will be more comparatively.



Hybrid solar systems combines the best from grid-tied and off-grid solar systems. These systems can either be described as off-grid solar with utility backup power, or grid-tied solar with extra battery storage. Hybrid solar systems utilize batter-based grid-tie inverters. These devices combine can draw electrical power to and from battery banks, as well as synchronize with the utility grid.

>This system take advantage of changes in the utility electricity rates throughout the day

>This system is quite costlier than on-grid and less expensive than off-grid.



The Solar power policy of Government has offered several benefits to independent solar power producers (IPP) and your requirement qualifies for such concessions.

  1. Income Tax benefit: the investor is entitled for 80% DEPRECIATIONon the amount invested on the solar project.
  2. SUBSIDY: Available as per Government norms.
  3. Free Electricity: The electricity produced by the solar power plants are FREE, UNINTERRUPTED, THROUGHOUT THE DAY,
  4. Savings: (i) There will be a huge savings by way of cost reduction in our electricity bills.                                                  (ii) Solar power plants can be installed easily near the load centers, thus we ca save lot of transmission hardware such as transmission towers, insulators, conductors etc., besides huge saving in transmission losses of power.
  5. Sale of Electricity: The excess power generated or unused power can be sold to the Electricity Board on a PPA (Power Purchase Agreement) through Net metering system.
  6. Pollution Free: Solar energy is non-polluting, clean, reliable and renewable source of electricity. It does not pollute the air by releasing harmful gases like carbon dioxide, nitrogen oxide and sulpher oxide. Solar energy does not require any fuel and thus avoid the problems of transportation of fuel or the storage of radioactive waste.
  7. Solar power plants can be installed easily near the load centers, thus we can save lot of transmission hardware such as transmission towers, insulators, conductors etc., besides huge savings in transmission losses of power.
  8. The technological advancements in solar energy systems have made them extremely cost effective.
  9. Most systems do not require any maintenance during their lifespan, which means NILrunning cost.
  10. Our systems have a life span of 30 to 40 years.
  11. Our systems carry a full warranty for 25 years or more.
  12. Unlike traditional monstrous panel systems, many modern systems are sleeker such as Uni-Solar rolls that lay directly on the roof like regular roofing materials.
  13. In most states, solar energy is fed back to the utilities to eliminate the need for a storage system as well as eliminating or dramatically reducing your electric bills.
  14. Solar energy systems are now designed for particular needs. For instance, you can convert your outdoor lighting to solar. The solar cells are directly on the lights and can’t be seen by anyone. At the same time, you eliminate all costs associated with running your outdoor lighting.



solar-powered pump is a pump running on electricity generated by photovoltaic panels available from collected sunlight as opposed to grid electricity l run water pumps. The operation of solar powered pumps is more economical mainly due to the lower operation and maintenance costs and has less environmental impact than pumps powered by an internal combustion engine. Solar pumps are useful where grid electricity is unavailable and alternative sources (in particular wind) do not provide sufficient energy. Solar powered water pumps can deliver drinking water as well as water for livestock or irrigation purposes. Solar water pumps may be especially useful in small scale or community based irrigation, as large scale irrigation requires large volumes of water that in turn require a large solar PV array. As the water may only be required during some parts of the year, a large PV array would provide excess energy that is not necessarily required, thus making the system inefficient.



Solar panel refers either to a photovoltaics(PV) moduleor to a set of solar photovoltaics modules electrically connected and mounted on a supporting structure. A   PV module is a packaged, connected assembly of solar cells. Solar panels can be used as a component of a larger photovoltaic system to generate and supply electricity in commercial and residential applications. Each module is rated by its DC output power under standard test conditions, and typically ranges from 100 to 320 watts. Most solar modules are currentlyproduced from solar cells made of polycrystalline and monocrystalline silicon.

Monocrystalline panel                                               Polycrystalline panel

Monocrystalline panel                                     Polycrystalline panel



ON-GRID INVERTERgrid-tie inverter is a power inverter that converts direct current (DC) electricity into alternating current (AC) with an ability to synchronize to interface with a utility line. Its applications are converting DC sources such as solar panels or small wind turbines into AC for tying with the grid





OFF-GRID INVERTEROff-grid or Stand-alone inverters, used in isolated systems where the inverter draws its DC energy from batteries charged by photovoltaic arrays. Many stand-alone inverters also incorporate integral battery chargers to replenish the battery from an AC source, when available. Normally these do not interface in any way with the utility grid, and as such, are not required to have anti-islanding protection





HYBRID INVERTERThis is possible through a technique that adds different energy sources (phase coupling: on-grid or grid-tie techniques) and the management of stored electricity in the battery (off grid technology). Hybrid inverters therefore operate on grid (grid-tie) as well as off-grid, hybrid (both on-grid and off-grid at the same time) and Backup (in case of a black out).





MICRO INVERTERSolar micro-inverter is an inverter designed to operate with a single PV module. The micro-inverter converts the direct current output from each panel in to alternating current. Its design allows parallel connection of multiple, independent units in a modular way.

Micro-inverter advantages reside mostly on single panel power optimization, independent operation of each panel, plug-and play installation, improved installation and fire safety, minimized costs with system design and stock minimization.



backup battery provides power to a system when the primary source of power is unavailable. Backup batteries range from small single cells to retain clock time and date in computers, up to large battery room facilities that power uninterruptible power supply systems for large data centers. Small backup batteries may be primary cells; rechargeable backup batteries are kept charged by the prime power supply.



variable-frequency drivevariable-frequency drive (VFD) (also termed adjustable-frequency drivevariable-speed driveAC drivemicro drive orinverter drive) is a type of adjustable-speed drive used in electro-mechanical drive systems to control AC motor speed andtorque by varying motor input frequency and voltage


Solar Street Lights

We, at Sri Surya Sakthi Solutions design and develop Solar Street Light. Our Solar Street Lights are being used in urban and rural areas as a means for preserving the non-renewable sources of energy. Solar Street Light has been available for a long time, having initially been designed for use in less developed or isolated areas, circumstances where the electricity supply is less.

Solar Street Light

Solar Street Light

Applications :

  • Industry Campus
  • University grounds
  • College grounds
  • Farm House
  • highway
  • Garden
  • Parks
  • Avenues