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What is solar energy?

It is important that you understand exactly what solar energy is. Wikipedia defines solar energy as "energy from the sun in the form of heat and light" when you use the term solar energy, you are actually referring to two different types of energy: heat and light. Each type of solar panel is designed to work either with the sun's heat, or the sun's light. For homeowners today, there are two types of solar panels, These are solar electric. Solar electric panels work with the sun's light. Solar electric panels create electricity from the sun's light that can be used to power your appliances-lights, fridge, etc. And there are solar hot water panels, Solar hot water panels use the sun's heat to heat the water for your shower, kitchen, etc..

Types of solar electric panels:

**Solar Panels- For most home and panels normally used are silicon. This technology has been around for the last 50 years. And While efficiency has certainly improved, the way these panels work has not really changed.
**Solar tiles-These are simply Solar Panels, but come in a much more integrated form. Instead of panels that sit on top of your roof, solar tiles are integrated into the roofing as actual tiles. Tiles are slightly less efficient than panels, so you need more of them to produce power. However, they do the job of roofing as well as energy production. This can make them a very cost effective option, especially if your house needs re-roofing. It's important to note here that the actual solar panels themselves only make up about 50% of the cost of the whole system. The rest of the cost comes from the other components.

Types of Solar panel systems:


*Components: Solar Panel, Inverter, Net Meter, Circuit Breaker Solar Home System
SHS: Grid tied systems work by connecting your Solar energy to the electricity grid. You generate solar power and sell the excess power back to the grid.
The advantages of this system is that it is cost effective and you can sell your power when you aren't using it. The disadvantages are that you cannot store your solar power. So if there is a power cut, you will only have power if it is sunny outside and your solar panels are making power.
*Components: Solar panels, inverter, circuit breaker, batteries, charge controller, backup power


Off grid systems mean you are not connected to the grid-you live in a remote area. These systems are more expensive as you will need storage for your power in the form of batteries. Off grid systems also require a backup power source. You will need backup power if you have many rainy days in a row that use up your stored battery power. Backup power can also be useful for unexpected heavy power usage-for instance if you have many people to stay at one time.


*Components: Solar panels, Inverter, circuit breaker, batteries, charge controller, Backup power, Net metering.
The grid tired with batteries system is when you are connected to the grid and you have batteries to store your solar energy. This is a system where you get the advantage of selling excess power to the grid. You also have emergency backup power for when the grid goes down. If you live off the grid-solar panels are usually a better investment than power cabling to connect to the grid. As a rule thumb-if you live more than 1 mile away from the grid, the cost of connection will be about the same as the cost of a solar system. Deciding the best type of system for your home.
A solar system gives you "free power", unlike the grid, where you are paying for power by the watt. If you live on the grid there is one thing to consider-do you get frequent power cuts? If you do get frequent power cuts, then a grid tired system with batteries will provide emergency backup power for when the grid is down. Otherwise, a grid tired system will give you the benefits of Solar energy and bill savings, without the added expense of batteries. Batteries add approximately 20-30% onto the cost of a grid tied system.

Solar Electric VS. Solar hot water

There are two things to consider when choosing between solar hot water and solar electric panels-climate and payback time. Solar electric panels tend to have a longer payback time. On the other hand, they last longer than the solar hot water panels. Solar electric panels are often warranties for 25years, but they have been known to continue working for 40years,with less than 20%drop in energy production. If you live in a hot and sunny climate, solar hot water is considered an excellent investment. It can break even in 3-8 years, and in some climates will supply 70% of your winter hot water needs and 90% of your summer needs. Solar hot water is less expensive than solar electric, and can work even in states with colder climates,

About ATC-Solar

ATC solar is a renewable Energy based career development and Trading wing of Advanced Trading Center (ATC). At present we are Marketing and trading renewable energy based products in Bangladesh

To Get ATC-Solar

1/10, Block-A, Lalmatia, Mirpur Road
Between Arong and sony Rangs showroom
West end of Manik Mia Avenue
Ground Floor of 5th storied building.
Dhaka, Bangladesh 1207

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