On-Grid Project

a) Ground Mounted Solar Power Plant
A Solar photovoltaic power plant (MW scale), also known as a solar park, is a large-scale photovoltaic system (PV system) designed for the supply of merchant power into the electricity grid. They are differentiated from most building-mounted and other decentralised solar power applications because they supply power at the utility level, rather than to a local user or users.

The solar power source is via photovoltaic modules that convert light directly to electricity. While, the concentrated solar power is other large-scale solar generation technology, which uses heat to drive a variety of conventional generator systems. Both approaches have their own advantages and disadvantages, but to date, for a variety of reasons, photovoltaic technology has seen much wider use in the field.

  Most Solar power plants are ground mounted PV systems. They can either be fixed tilt or use a single axis or dual axis solar tracker. While tracking improves the overall performance, it also increases the system's installation and maintenance cost. A solar inverter converts the array's power output from DC to AC, and connection to the utility grid is made through a high voltage, three phase step up transformer.

  • Jharkhand Renewable Development Agency (JREDA), brings out comprehensive scheme to implement the targets specified under the policy .JREDA will conduct processes like invitation of bids/ applications for solar PV projects ,facilitation of incentives and central financial assistance available from central and state government.
  • Jharkhand Renewable Development Agency (JREDA), Government of Jharkhand is the nodal agency for registration and post development activities for the development of the Solar Power Projects in the state.

b) Grid Connected Rooftop Solar Power Plant 
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 415V/230V three/single phase line depending on the local technical and legal requirements.

These systems generate power during the day time which is utilized by powering captive loads and feed excess power to the grid. In case, when power generated is not sufficient, the captive loads are served by drawing power from the grid.

The concept of rooftop solar is based on the scale of the PV plant rather than the fact whether it is situated on a roof/terrace or not. Hence, the definition of RTS also includes small solar plant on the ground

Type of metering arrangements:

  1. Net Metering
    Net metering systems are primarily aimed at providing an opportunity to consumers to offset their electricity bills, wherein a single meter records both import of conventional energy from distribution grid and export of solar energy into distribution grid. Thus, net metering allows the final user to credit produced energy in the grid and is also promoted as a preferred option.
  2. Gross Metering
    Gross metering systems are aimed at rooftop owners/third party investors who will like to sell energy to the DISCOM by using roofs owned by them or another party. It is also known as feed-in metering wherein, all the energy generated from the system is exported to the grid and is separately recorded through a different 'feed-in meter'. The developer exports the solar energy to the utility at a predetermined feed-in-tariff (FiT) approved by the regulator, and the third party investors/RESCO developers enter into a long term Power Purchase Agreement (PPA) with the utility. Only grid-connected PV systems can be gross-metered.

    Jharkhand Renewable Development Agency (JREDA) has brought out a comprehensive scheme to implement the targets specified under the policy. JREDA shall conduct processes like invitation of bids/ applications for solar rooftop projects, facilitation of incentives and central financial assistance available from central and state government.

    To download JSERC Net and Gross Metering Regulation along with updated PPA rate click here

c) Canal Top Solar Power Projects.

Last Modified on : 12-04-2019