How Off-Grid PV Solar System Works in India?

Do u Know this Amazing Fact about Solar Energy?

“In just one second our sun produces enough energy to meet the entire electricity demand for 500,000 years”

Sukam solar panels off grid

India has a favorable climate for installing solar as it gets on average 300 days of sunshine.

Owing to PM Modi ji’s push for green energy, India is expected to install 10,000 MW projects to generate electricity from solar panels. Over a billion homes around the world run on solar and Indian home owners are fast realizing the benefits of installing PV solar rooftop systems.

When it comes to using solar power there are two kinds of systems that one can go for –

  1. off grid solar system and
  2. on-grid or grid-tie solar system.

What is Off-Grid Solar?

Off-Grid Solar – the term is quite self-explanatory. It simply means that the solar power system is self-sufficient and is not dependent on the grid/main power supply.

What Equipment Are Required to Install Solar Off-grid System?

Solar Panels: They generate DC electricity

Solar Power Conditioning Unit: This one unit consists of MPPT charge controller, inverter, and monitoring software
Battery Bank: Batteries are used to store the solar energy and power equipment in the absence of solar

Off-Grid Solar Working Diagram
Let’s see how it works in 4 simple steps:

1. Sun rays fall on solar panels which are installed at the rooftop. This causes PV solar panels to excite flow of electrons which generates DC electricity as solar power.

2. The PV solar panels are connected to Solar Power Conditioning Unit (PCU) which converts DC electricity generated by solar panels into AC electricity. This AC electricity then goes to the main power outlet of the building and all appliances run directly on solar.

3. Simultaneously, solar power also reaches the batteries again via the solar PCU. The solar PCU has a built-in solar charge controller which regulates the current and voltage that reaches the batteries. It ensures that regulated amount of current reaches so that they don’t get overcharged.

4. In the evening or in the absence of sun the solar PCU uses the energy stored in batteries to power all connected load such as lights, fans, TV, fridge, AC, heater, blenders etc.

5 Benefits of Su-Kam’s Solar Power Conditioning Unit

Off-Grid Solar with Battery Bank


Su-kam Solar PCU Monitoring Software




1. The solar PCU is 3-in-one unit which has an inbuilt solar charge controller, inverter, and grid charger. Off-grid solar solutions may be possible without a solar PCU but in that case charge controller and inverter would have to be installed separately. Solar PCU makes the set up more convenient.

2. Excellent Monitoring Software: Su-Kam’s PCU can be connected to a laptop to monitor its performance such as input voltage, output, numbers of unit made etc. In fact Su-Kam is ready to launch PCUs which are wifi enabled meaning you don’t even have to connect it to a laptop – it will deliver the data right to your phone. Innovation at its best!

3. Another big advantage of solar PCU is Unity Power Factor which means that if you install a solar PCU of 3kw capacity then you can run load up to 3000 watts with it – this is not possible with ordinary inverters. A 3kw inverter may only run load 2400 watts because of power factor of .8 owing to energy losses when DC is converted in AC. However solar PCU has a high frequency inverter due to which these losses are minimal and it helps in getting you maximum energy possible.

4. Our solar PCU has latest MPPT (Maximum Power Point Tracking) charge controller. This technology lets you extract maximum from solar power. For example, if you are making 8 amps of current from solar panel, MPPT based solar charge controller will boost the current and ultimately 11 amps will reach your batteries. Your batteries will get quickly charged. If you think of it in the long run, it is similar to installing additional solar panel.

5. Grid Charging: Su-Kam’s PCU also let the battery charging happen through grid which is very useful on cold days when sun is not abundantly available. However it will always give priority to solar and when it detects solar it will automatically disconnect itself from the mains.



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