Important FAQ’s on Solar PV system.

  1. How do solar panels produce electricity?

The solar photovoltaic system consists of two main parts – Solar Panel and Inverter.

Solar Panels comprise of many smaller units called as photovoltaic cells. When these are placed under the sunlight, they generate DC electricity. The inverter converts it into alternating current that can be used to operate various equipment and devices.

The inverter is a power adapter that automatically synchronizes with the grid. It ensures that solar energy is used as priority over the power supply; also it allows a battery-included independent power system to run conventional appliances through regular home wiring.

The solar system consists of the following elements

  • Solar Panel
  • Inverter
  • Mounting structure
  • System Balance – Cables – DC & AC, electrical appliances – MCB, surge protection etc.
  • Batteries (in cases of load shedding)
  1. Does Solar panel work during rainy season?

Yes. The system will produce even during the monsoon season or even during cloudy days as long as there is visibility. Although the amount of production is lower than in the summer months. Example: Countries like Germany and UK have tremendous success with solar power initiatives.

  1. What is the life of solar power systems?

The solar panels generally have a 25-year warranty. However the guarantees of the inverter and structures may vary from 5 to 10 years or more.

  1. What is the maintenance cost of solar systems?

Solar PV systems generally require less maintenance. You need to clean the panels regularly to remove any dust or dirt matter deposits.

  1. What is solar off-grid system?

Off-grid systems are a solar system with battery backup. These systems are suitable for locations facing significant power cuts. Here batteries are used to store energy which can be used in case of unavailability of power. The system has to be designed considering connected loads and their surge requirement.

  1. What is solar on-grid or solar power net-metering?

Using Net-metering the consumer generates his own electricity using solar system and any excess power generated is exported to the grid utility. The consumer gets credits for the units fed back to the grid. This allowed maximum use of solar production even on days when direct consumption was very low. There are many advantages like no excess costs of batteries and get credits for the electricity fed to grid.

The net counting arrangement allows the credit to be deferred each month. Only if your production is greater than the consumption during the period of a fiscal year, you will receive compensation by MSEB or a utility company.

(Kindly refer your state policy for more information about tariff)