Greengrid Net Metering

According to the energy policy scheme prepared by the Ministry of Power and Energy, the government intends to supply electricity to the whole population by 2012. And also currently the rural area market is governed by the existing solar photovoltaic developers and hence it is not wise to target that particular market. The relatively higher costs involved with stand-alone PV systems have prevented solar photo voltaic from becoming a viable energy option for off grid consumer. In off grid applications a battery pack is required and hence the cost is dramatically increased.

Net Metering

Battery backups in existing off grid systems tend to fail after about five years raising questions about the reliability of the system. But the introduction of net metering in 2008 has enhanced the interest among the public for renewable energy and the ease of utilizing solar photovoltaic. The public awareness about this particular technology is growing day by day so this is an ideal time to enter the market. The government policy to integrate electricity produced by means of renewable sources up to 10% of the total installed capacity has also resulted in a rapid development in this particular sector.

  • Net metering is a billing mechanism that credits solar energy system owners for the electricity they add to the grid.

  • Where net metering is available:
  • 1. If a customer has a PV system on the rooftop, it may generate more electricity than he uses during daylight hours.
  • 2. This excess energy if fed into the grid will earn him a predetermined credit.

  • However, if net metering is not available:
  • 1. The excess energy, if fed to the grid, will be measured as consumption and rather than getting credit, the customer will have to pay for it!!!
  • 2. Load should be more than generation to avoid grid-feed.
  • Benefits of Grid Tied Solar PV Power Plant with Net Metering

    • Generate Electricity through solar PV plant installed at your roof itself.
    • Energy generated during the day (sunlight hours) is first consumed by the daytime load
    • If the generated energy is inadequate, the system automatically draws balance requirement from the grid.
    • If generated energy is higher than required by load, excess energy after catering to the load is exported to the grid.
    • Depending on Utility Energy cost, Investment is paid back in approx. 3 to 6 years.
    • At night, when there is no sunlight and hence no generation, load runs on grid power.
    • You pay for the net energy drawn from the grid (Consumption less Export to grid).
    • There is no need to store energy in Batteries for use at night, hence the system is cheaper, more efficient and requires very less maintenance.
    • Post payback period, the system will deliver free electricity for another 20 to 25 years.