Solar Installation

Solar Panels

Solar panels are devices that convert light into electricity. They are called “solar” panels because most of the time, the most powerful source of light available is the Sun, called Sol by astronomers. Some scientists call them photovoltaics which means, basically, “light-electricity.”

A solar panel is a collection of solar cells. Lots of small solar cells spread over a large area can work together to provide enough power to be useful. The more light that hits a cell, the more electricity it produces, so spacecraft are usually designed with solar panels that can always be pointed at the Sun even as the rest of the body of the spacecraft moves around, much as a tank turret can be aimed independently of where the tank is going.

What Type of Solar Panel you will need?

There are three main types of solar panels: Monocrystalline silicon solar panels, polycrystalline silicon solar panels, and thin-film solar cells. They are arranged in decreasing order from efficiency of the panels and cost.

poly crystalline panels

Solar Panel Installation

After research, have contacted a reputable solar installer like EPC Solar Space, and are ready for installation. What’s involved? And how soon will you start to notice your return on investment? and how soon will you start to notice your return on investment?

Let’s start by talking about what really happens when you install solar panels in your home, and how they convert sunlight into energy. First, solar panels convert sunlight to DC current. An inverter (part of your solar power system that converts stored energy into voltage needed to run standard electrical equipment) converts this DC electricity to AC. Your home takes the energy it needs based on the number of electrical units requiring energy. 

If your residential solar system is also connected to the grid, any extra , unused electricity, is fed back to the grid (or to a battery, if you have a battery backup). In cases like this, you are typically eligible for something called net metering. This is essentially a credit that is given to your energy account from the utility company. When you draw energy from the grid (because you no longer have enough solar energy to consume), net metering compensates for the amount of energy you gave the grid. In essence, it’s possible to come out with a zero balance because what you put into the grid (from your solar panels) is roughly the same amount that you took from the grid (e.g., during nighttime).

Different Types of Solar Plant System

  • On Grid Solar Power Plant
  • Off Grid Solar Power Plant
  • Hybrid Solar Power Plant

“If you have a reliable grid but your electricity bills are high, then On-Grid Solar Power Plant is recommend for you.”

On-grid or grid-tie solar systems are by far the most common and widely used by homes and businesses. These systems do not need batteries and use common solar inverters and are connected to the public electricity grid. Any excess solar power that you generate is exported to the electricity grid and you usually get paid a feed-in-tariff] (FiT) or credits for the energy you export.

On-grid solar systems are very cost-effective and easy to install.Businesses can recoup the cost of their investment by offsetting electricity bills in just 3-8 years.If a private, commercial or industrial building sets up a solar PV rooftop system it will be eligible to avail an ‘Accelerated Depreciation Benefit’ which is currently 80% in a year. At this rate, businesses can completely the whole  value of the project in approximately 4 years..

“If you want to save electricity but don’t have a electricity connection or a reliable grid, then Off-grid Solar Power Plant is system recommend for you.”

An off-grid system is not connected to the electricity grid and therefore requires battery storage. An off-grid solar system must be designed appropriately so that it will generate enough power throughout the year and have enough battery capacity to meet the home’s requirements, even in the depths of winter when there isless sunlight.ed

These self-sustainable systems can work independently and do not rely on the grid. They generate enough power that can be stored and used at night or when the power grid is down.These are ideal for remote areas where there is no power access from the grid. Grid failures and shutdowns will not affect your power supply.


“If you don’t have reliable grid, then Off-grid Solar Power Plant is recommend for you. But if you also want to export to Govt. Grid  with battery back-up, Hybrid system is best for you.”

Hybrid Solar System or Power Plant is a combination of both above said solar systems.When choosing a type of solar system for home, institute, business or industry, mostly choose either an on grid solar system or an off grid solar system system. But now one more option is available and this is “HYBRID SOLAR SYSTEM”.

A hybrid solar power system is combination of on-grid and off grid solar system, a grid connected system with the ability to feed surplus electricity to electricity grid with include peace of mind with battery backup.It means that even during a power-cut your system will work, you still have electricity. Hybrid combination of solar energy storage with a grid connection. This system provide the flexibility of being able to store the power to batteries you generate during the day time instead of feeding it back into electricity grid.

How Do Solar Panel Work?

How do solar panels convert the sun energy into electricity?

The sun transmits energy in the form of electromagnetic radiation. When this radiation is absorbed by the solar cells, rapid electron movement occurs within the atoms of the material. Because of the way the cells are manufactured with layers of material with differing atomic structures, the electrons are forced to move in one direction, creating direct current, or DC. It then flows into an inverter which converts the DC into alternating current, or AC, to be usable in your home or business.

What Size Solar Power System Do I Need?

Solar System Size

It depends on how much electricity you use. Two homes the exact same size will use different amounts of electricity and therefore require different size systems. Major electrical loads within a home are air conditioners, electric heaters, pools, and other heating elements or motors.

That being said, an average 2,500 sq. ft. single-family home uses about 5,000 kilowatt-hours of electricity per year. A 3 kilowatt (AC) system will generate nearly all the electricity required for such a home on an annual basis. Sometimes a PV system can be installed that is slightly over-sized to allow for the possibility of a growing family or other factors that may play a part. When a system overproduces electricity, the unused portion is fed back into the grid and will actually be credited back to your utility account in a program called net-metering.

How Much Does Solar Cost?

Solar System Cost

Since every customer’s needs are unique, the exact solar panel system cost will depend on system size (see What Size Solar System Do I Need?), ease of installation, and state rebates or incentives. Each installation is custom built depending on the unique power needs of each residence.

Another option you may want to consider is leasing a solar panel system. Initial costs for installation can vary and lease payments are on a monthly basis, typically lower than what you currently pay for your electricity from the utility company. To learn more about leasing, please see Purchasing Or Leasing a Solar Panel System.

Why Solar Energy in India?

  • India has tremendous scope of generating solar energy.
  • The geographical location of the country stands to its benefit for generating solar energy.
  • The reason being India is a tropical country and it receives solar radiatio almost throughout the year, which amounts to 3,000 hours of sunshine. This is equal to more than 5,000 trillion kWh.
  • Almost all parts of India receive 4-7 kWh of solar radiation per sq metres. This is equivalent to 2,300–3,200 sunshine hours per year.
  • States like Andhra Pradesh, Bihar, Gujarat, Haryana, Madhya Pradesh, Maharashtra, Orissa, Punjab, Rajasthan, and West Bengal have great potential for tapping solar energy due to their location.
  • Since majority of the population lives in rural areas, there is much scope for solar energy being promoted in these areas.
  • Use of solar energy can reduce the use of firewood and dung cakes by rural household.