SRB Power India Pvt. Ltd.

Mission Energy
Solar Rooftop Systems
Rooftop solar systems are usually setup on free space on roof.rooftop solar systems can be use at commercial and domestic purpose.The cost of a rooftop solar PV system depends on the function it serves (to feed power into the grid, to support the load during a power failure, etc.) and sometimes there are incentives/subsidies also available for non profitable home,hospitals,institutes etc. It should be noted that all solar PV systems function by matching the voltage from some other source.Therefore the system has to be integrated with the grid, a battery backup, or a diesel generator. Types of rooftop solar PV systems Rooftop solar PV systems are of 3 types:
Grid-tied – 
                 These systems are designed to work with the grid alone. Thus, it is a combination of solar PV and string inverter. basic use of this type of rooftop systems are to be Reduce electricity bills where electricity fails are rare.Extra electricity can be export to Grid supply and it will be adjusted in electricity bills.Cost of such type of rooftop system are chief then others and maintenance are very low. these systems depend on the reference voltage provided by the grid for their operations, grid-tied systems do not work when the grid is down.Grid-Tie Solar Systems In grid connected rooftop or small SPV system, the DC power generated from SPV panel is converted to AC power using power conditioning unit and is fed to the grid either of 33 kV/11 kV three phase lines or of 440/220 Volt three/single phase line depending on the capacity of the system installed at institution/commercial establishment or residential complex and the regulatory framework specified for respective States. They generate power during the day time which is utilised fully by powering captive loads and feed excess power to the grid as long as grid is available. In case, where solar power is not sufficient due to cloud cover etc., the captive loads are served by drawing power from the grid. The grid -interactive rooftop system can work on net metering basis wherein the beneficiary pays to the utility on net meter reading basis only. Alternatively two meters can also be installed to major the export and import of power separately. The mechanism based on gross metering at mutually agreed tariff can also be adopted. Many such power plants can be installed at the roofs of residential and commercial complex,housing societies, community centres, government organisations, private institutions etc.Power plant can be installed 80% capacity of total section load by electricity board. A bi directional meter, monitor all the incoming and outgoing Electricity at the system.
Benefits of Grid tie solar Systems-Grid tie solar systems are beneficially by investment and maintenance point in comparisons with Off-grid/ Hybrid Solar Systems                      
Hybrid Systems–
                            Hybrid solar systems are advanced technology for commercial and domestic uses.This system can works in dual function export and supply with load.system loaded with desired battery bank capacity and export the electricity to grid. at the time of mains failure loads will not effected.its supply to load if solar or battery bank available. this can be synchronised with diesel generator to support the load even during a power failure. 
Off-grid – 
                Off-grid systems are designed to operate independent of the grid, these systems sync with a diesel generator and/or batteries. Battery based systems used to be of smaller capacity due to the cost involved, but the rising cost of other power sources, and the lack of power at any cost has seen a steady increase in battery based system sizes The difference between the systems lies in the kind of inverter used, and the inclusion of batteries. As various vendors use different terminology for these systems we urge you to verify the functions of the offered system rather than going by the name alone.