In order to size your solar energy panels, you have to decide if you want a direct grid-tie system without batteries or not. If you do not want to use batteries, the size of your solar power generator will simply be what you can comfortably afford ($$). This will help you offset your energy bills, but you’ll have to draw power from the grid at night. Things will be rather different if you want to install an off-grid system with a battery bank.

Contrary to what most people think, step #1 to sizing your solar power system is to check if there is any energy wastage in your home — lights that remain turned on 24/7, pool pumps that keep running even during the night, heaters that never stop pumping hot air, et cetera. Only after you have eliminated these “leaks” can you determine how much energy (KWh) you use every day. Otherwise you’ll be spending lots of money on a larger-than-necessary solar power generator.

It’s easy to determine how much power you use on a daily basis. A quick glance at your utility bill quickly reveals the number. This is the result of those big power-sucking elements around the house. Some examples are your clothes dryer, water heater, air conditioning, refrigerators and heaters. Having your power consumption in mind, you’ll have to multiply it by a factor of 1.15 to correct for power loss through inefficiencies in the system. (Inefficiencies occur as a result of imperfect transmission through the inverter, cables and batteries.)

Even if you are not going to immediately build a solar energy panel now, it’ll be useful to go around your house to look for these energy vampires to slay. Before we go on to the next part of “Sizing Your Solar Energy Panels” series, please do this exercise. It’ll be beneficial to you in the long run and you’ll thank me for it.

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Every once in a while, you’ll need to remove the dust from the surface of your solar panels. Since your solar panels are probably installed on your roof, away from convenient reach, procrastination happens. Yet it is important to remove anything that may block sunlight from reaching the photovoltaic cells.

There are two convenient ways you can get the dust off your solar energy panel’s surface. The first and most common is to spray some water to wash them away. When done regularly, this can be pretty effective. While washing your solar panels, you may find that the energy output shoots up, way beyond the maximum, then settles at a new high. This is because solar cells are cooled down as you spray water on them, thus their efficiency increases. After they’re warmed up again, their efficiency settles at a higher level than before as more sunlight reach the solar cells.

Another way to clean the glass surface (especially when it gets real dirty or there’s some grease or oil on it) is to use a solar panel cleaning system kit. One good example of this can be found on the popular website, Amazon.com. Here’s a description of how it’s like:

Mr. Long Arm 1008 Pro Curve Solar Panel Cleaning System Kit

“It is designed to clean solar panels faster, safer, easier and is better for the environment. Using this system leaves no carbon footprint and conserves water, unlike complicated, expensive, non-eco friendly equipment. It allows you to reach and clean even the most difficult to access solar panels. It kit includes one 5 to 8 foot two section extension pole, one 12 Inch and one 18 Inch channel with squeegee rubber, one 18 Inch and one 22 Inch wash bar and wash sleeve, two tool handles, one 4 to 8 foot flow through extension pole, one flow-thru angle adaptor, one soft flow-thru cleaning brush, one 15 by 15 Inch microfiber cleaning cloth, instruction DVD and a handy canvas case. This assortment will allow you to meet all your cleaning needs.”

Hopefully with this kit, you can clean your solar panels in double quick time!

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Image via Wikipedia

As you shop around for solar energy panels, there may perhaps be that occasional doubt about its benefits. Many consumers have similar experience. At some point in time, they take the leap of faith to supplement their household energy requirement with solar energy. As a result, their utility bills decreased dramatically. Most are delighted to sell their extra supply of electricity back to the grid.

As energy cost increase over the last decade, more and more homes are installing solar panels on their property. Although it takes some upfront investment to own solar panels, they really pay for themselves after some time.

Theoretically, it takes about 12 years for you to make back your investment in solar panels. But many states are now offering rebates, so the final cost of your investment is really much lesser than it seems to be. Rebates vary from state to state, so be sure to check out what you’re entitled for. The government also offers other incentives to encourage you to use renewable energy for your home.

Over the past 30 years, the price of solar panels have fallen to only 10% of what it used to be. It was practically impossible for folks to get a good return on their investment in the past without very high solar exposure on their property.

However, solar panels are much more efficient than they used to be. Therefore they also generate much more power than before and they need minimal maintenance. Best of all, these maintenance can be done by yourself with very little time. Modern solar cells are also much lighter and compact. Thus they can be installed on your roof with little modifications to its structure. As solar cells become more reasonably priced, adding solar power to your home is a brilliant, long-term solution to expensive utility bills.

But before you go shopping for a solar energy panel, there are a few basics you need to find out. These will help determine what types of solar energy panels you’ll require:

1. Know Your Energy Consumption. You need to know how much power you consume – the average, the highs and lows. This information helps you size up your system so you can figure out how many panels you need and what design is most suitable for you.

2. Find Out How Many Sun Hours You Receive At Your Location. This is obvious, but even the most efficient photovoltaic panels cannot generate enough power if there is insufficient sunlight. It would be impractical and costly to pay for gigantic solar energy systems that produce trickles of power.

3. Decide Whether You’ll Be Going Off-Grid. On-grid and off-grid systems have their own advantages and disadvantages. Most homes will stay on the grid because they can tap extra power (especially during winters) when they need to and when they generate additional power, they can sell it back to the grid. If you’re located in a remote region, going off-grid may be practical. You’ll thus need a storage system such as a battery bank to store energy so you can use during the night.

4. Find Out The Rebates And Incentives Available To You In Your State. This is important as it helps you find out the true cost of your solar generator. This may be an important factor that helps you decide if using solar energy is worth it after all.

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