On Grid Vs Off Grid Solar Power System

What is Solar Power System?

Solar power is the conversion of energy from sunlight into electricity,  using photovoltaic (PV) cells.
Many industrialized nations have installed significant solar power capacity into their grids to supplement or provide an alternative to conventional energy sources while an increasing number of less developed nations have turned to solar to reduce dependence on expensive imported fuels.

Solar Panel In Hong Kong

Long distance transmission allows remote renewable energy resources to displace fossil fuel consumption. Solar power plants use one of two technologies:

• Photovoltaic (PV) systems use solar panels, either on rooftops or in ground-mounted solar farms, converting sunlight directly into electric power.
• Concentrated solar power (CSP, also known as "concentrated solar thermal") plants use solar thermal energy to make steam, that is thereafter converted into electricity by a turbine.

How does solar power system work ?

A standard solar panel(price for solar could range between ₹19/watt to ₹35/watt) consists of a layer of silicon cells, a metal frame, a glass casing, and various wiring to allow current to flow from the silicon cells. Silicon is a nonmetal with conductive properties that allow it to absorb and convert sunlight into electricity. When light interacts with a silicon cell, it causes electrons to be set into motion, which initiates a flow of electric current. This is known as the “photovoltaic effect,” and it describes the general functionality of solar panel technology.

Photovoltaic power-stations:

The Desert Sunlight Solar Farm is a 550 MW power plant in Riverside County, California, that uses thin-film CdTe solar modules made by First Solar. As of November 2014, the 550 megawatt Topaz Solar Farm was the largest photovoltaic power plant in the world. 

This was surpassed by the 579 MW Solar Star complex. The current largest photovoltaic power station in the world is the Pavagada Solar Park, Karnataka, India with a generation capacity of 2050 MW. World's best solar power system is in India.

Pavagada Solar Park	India	2,050		53	2017
Tengger Desert Solar Park	China	1,547		43	2016
Bhadla Solar Park	India	1,515		40	2017
Kurnool Ultra Mega Solar Park	India	1,000		24	2017
Datong Solar Power Top Runner Base	China	1,000			2016
Longyangxia Dam Solar Park	China	850		23	2015
Rewa Ultra Mega Solar	India	750			2018
Kamuthi Solar Power Project	India	648		10.1	2016
Solar Star (I and II)	United States	579	1,664	13	2015
Topaz Solar Farm	United States	550	1,301	24.6	2014

Now Lets Come To The On Grid Solar System:

On-grid means your solar system is tied to your local utility’s GRID. This is what most residential homes will use because you are covered if your solar system under or over-produces in regard to your varying energy needs. All this means for you is that your utility system acts as your battery space.

On Grid

If you are producing more energy with your solar panels or system than you are using, the excess energy is sent to your grid’s power company, allowing you to build credit that you can cash out with at the end of the year, in a process called net metering.

Being grid-tied is beneficial because you don’t have to buy an expensive battery back-up system to store any excess energy.

Now Lets Come To The Off Grid Solar System:

Off Grid

Being off-grid means you are not connected in any way to your grid’s power system or utility company. This is appealing because you are 100% self-sustaining your energy use. However, there are disadvantages because off-grid systems require you to purchase back-up battery which can be expensive, bulky, and not very environmentally friendly which defeats the purpose of going solar

So that's all folks. Hope you like it.