According to all indicators, the energy of the future is solar. Home and industry are rapidly adapting to it. Many casinos/hotels on the Strip have already installed massive arrays to capture and convert energy. Can you say, “solar-powered slot machines”? Solar is even being adapted and integrated to power automobiles. Batteries force you to stop, plugin, just so you can recharge. Solar-powered vehicles can keep rolling while charging.
Adding solar to your home will reduce utility bills, make you more self-sufficient, lower your carbon footprint, and make a favorable impression on many of your neighbors. When you start thinking about adding solar, the prospect can seem overwhelming. Everyone starts the process with the same two basic questions:
Where would I install it?
What will it cost?
Of course, that depends upon just what you want your solar system to accomplish.
1: Do you want the system to support 100% of your needs?
2: Do you want to overbuild it for upcoming expansion? (Are you going to add a swimming pool, for example?)
3: What are the personal consumption habits of your family?
4: The amount of uninterrupted sunlight does your geographical and physical location receive?
THERE ARE SOME GENERAL RULES OF THUMB
The typical solar panel is about five and a half feet by three feet. So be thinking about how you would arrange those on your roof or in an open area on the ground. And you have to ask yourself if you’re going to cover 100% of your electrical use or a lesser percentage of it.
IS THERE A WAY TO CALCULATE HOW MANY SOLAR PANELS I NEED?
To estimate the number of panels you might need let’s, take a look at some of the dry math involved. After all, numbers don’t lie. Let’s construct a formula based on three things: how much energy you’re going to use in a year, how many watts you’re going to need to meet your estimated needs, and how efficiently the panels produce power.
Look back over the history of your location’s electrical usage for a few years. In order to be as accurate as possible, you need to consider how many appliances you have and what you may add in the future to accommodate your lifestyle. Make room if you plan to increase the number of electrical devices in your home or add a pool, workshop, or exterior lighting, for example. Don’t overthink and panic about this because, frankly, as time progresses devices become even more efficient at using electricity. Look at what’s happened with refrigerators, televisions, and AC units over the years. Now, for our example and to keep math simple we’ll say you use 10,000 kilowatt-hours of electricity in a year.
HOW EFFICIENT ARE THE SOLAR PANELS BEING USED?
Solar panels are rated based on how much power they put out under specific and ideal conditions. There’s a pretty wide range have efficiency for them based on who manufactured them and the quality of materials involved in construction. 200 to 400 watts of power is a pretty safe assumption, so for example let’s use 300 watts of power generated over 8 sunny hours a day.
One 300 watt panel receiving sun exposure for eight hours a day will yield roughly yield 2.5 kilowatt-hours per day. Times 365 days a year gives us a yearly total of about 900 kilowatts in a year from that one panel. So, minimally, you’re going to need 12 panels to produce 10,000 kilowatt-hours over the course of a year. Now let’s be honest. A lot of these calculations depend on where you are located on the surface of the planet.
Now there’s a third element in calculating how many panels you’re going to need. As the earth tilts on its axis toward the sun over the seasons it alters the efficiency of solar panels. panels have a thing called production ratio. In other words how much energy does the solar panel array produce over a year? It’s mathematical skullduggery in which your array never delivers a one-to-one result. In simple English, this means your array will not be as efficient as you might calculate.
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Email address: Philip@isolarparts.com