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Guide to Solar Panels for Sale

Updated on April 19, 2013

Home Solar Panel Kits

A guide to solar panels for sale online. You can buy solar panel kits online, but which kit is right for your needs - grid-tied or off grid? How much power will they generate? How much money can you save?

We have PV solar panels on our roof and as I write this, on a sunny summer day they are busy generating the electricity that is operating my dishwasher. A solar panel system isn't a cheap purchase so it's worth researching. I spent a lot of time understanding what you can expect to get from your PV solar panels and I've been very pleased with the results.

Image: My solar panels before they went on the roof.

On Grid or Off Grid

When planning to buy a solar panel kit you need to decide whether on grid (grid-tied) or off grid best meets your needs.

On grid means that electricity you generate can flow back to the grid and you can be paid for it. With an on grid system you will not have electricity during a power outage unless you install an external battery. You may need an on grid system to quality for green energy generation rebates. We have an on grid system and get paid by the government for every unit of electricity that we generate (whether we use it or sell it to the grid.)

Off grid means that your solar panel system is independent of the electricity grid. You will have electricity during a power cut but will not be able to sell excess electricity back to the grid. Some people like the idea of being completely self-sufficient for energy. Others have no access to the grid because of a remote location or a moveable one such as an RV.

Your eligibility for any rebates or tax breaks may be different so check carefully.

Grid-Tied or Off Grid System?

Do you need a Grid-Tied or Off Grid System?

See results

Grid-Tied Solar Panel Systems

For homes that are connected to the grid.

Grape Solar GS-5060-KIT Residential 5,060 Watt Grid-Tied Solar Power System Kit

@ Amazon

BUY NOW

This is a large domestic kit, we'll look at some smaller ones below, but we went for the biggest kit we could fit on our roof because that will save us the most money. Looking at this kit will help us understand how much electricity you could generate.

It's a grid-tied system which means that it connects to the grid and you can sell excess electricity back to your supplier.

Now we'll look at what 5,060 Watt means.

So how much electricity will it generate?

And what does that actually mean?

The solar panel kit above is specified at 5,060 Watt. Its product description states that it will generate 462kWh to 924kWh of electricity per month. This amount depends on the amount of sunlight you receive, the average is different in different locations and varies during the year. You will generate far more electricity in the summer months than in the winter - though you might be surprised how much electricity you can generate on a sunny winter day.

OK, so what does 462kWh to 924kWh mean?

According to the US Energy Information Administration

"In 2009, the average annual electricity consumption for a U.S. residential utility customer was 10,896 kWh, an average of 908 kilowatt-hours (kWh) per month. Louisiana had the highest annual consumption at 15,276 kWh and Maine the lowest at 6,252 kWh."

This means that households can generate a signification proportion of their electricity. Note that you can only use solar electricity when you are generating it so you will need electricity from the grid when it's dark. But some households will be able to generate more electricity than they use overall.

At any time when you are not using all the electricity that you generate, you will be able to sell excess electricity back to your provider.

Grape Home Solar Panel Kits

The Grape Solar Panel kits come in various sizes to suit the needs of different households.

An Uninterruptible Power Supply

An uninterruptible power supply stores electricity for use during a power cut. A small UPS is a good addition to an on-grid solar panel system. It means that you can power specific devices (plugged in to the UPS) for a period of time after a power outage.

We use our UPS for essentials like our internet router and computers - we can't be without the internet!

Off-Grid Solar Panel Systems

Cabins and cottages without power and emergency backup.

Sunforce Products ProSeries Solar Backup Power System - 1300 Watts

@ Amazon

BUY NOW

Sunforce Products Solar Backup Power System - 800 Watts

@ Amazon

BUY NOW

These Sunforce Solar Panel Kits with a Storage Battery can be used off-grid to generate electricity which is stored in a battery.

Sunforce Solar Panel Installation Guide

This video explains in detail the components of a solar panel installation and how to fit them and start generating electricity.

Sunforce Polycrystaline Solar Panel Kits - With Sharp Solar Panels

You can also buy additional sharp solar panels for a Sunforce system and kits that come without a battery.

Sharp Solar Panels Video

This video from Sharp explains how PV solar panels work and why you should install solar panels.

Solar Generation Rebates and Tax Breaks

Search for Solar Generation Rebates and Tax Breaks

Thanks for Visiting

Solar Panels for Sale Online

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