A Solar Panel Installation Cheat Sheet

Jessica PirroJanuary 14, 2020 5745 1

The Solar Panel Installations Cheat Sheet

If you’re interested in getting a solar panel installation, but you don’t know much about solar panels and everything that solar panel installation is going to entail, you’ve come to the right place!

Here’s a beginner's guide to solar power systems!

The Main Components of Solar Power Systems

Solar power systems are going to be made up of three main components, solar panels, solar power inverters, and the racking/mounting for the solar panels.

The Solar Panels

The solar panels are either going to be polycrystalline or monocrystalline. It doesn’t matter if you get mono or poly solar panels. What is going to matter is the brand of solar panels that you get will last 25+ years after being installed on your roof.

There’s going to be good affordable brands and good premium brands. However, there are also going to be branded on the market that is considered no-name solar panels that are no good, and are highly unlikely to last longer than 3-5 years. Homeowners should avoid installing these solar panels at all costs.

The Solar Power Inverters

The second main component of a solar panel installation is going to be the solar power inverter, it’s either going to be a string solar power inverter (typically the size of a briefcase) or microinverters (the size of a small paper book).

A string solar power inverter is going to be installed on a wall and all of the solar panels re going to connect to it. A microinverter is going to go on the back of each of the solar panels.

There is also going to be a third solar power inverter option, power optimizers, which are going to be a sort of hybrid inverter between the other two solar power inverters.

The solar power inverters' job is to convert the DC solar electricity coming from the solar panels, into AC solar electricity, which is the type of electricity that your home uses.

The solar power inverter is the component that will most like need to be replaced when it comes to a solar power system because the solar panels are working day in and day out.

When it comes to getting premium brands with your solar panel installation, it’s highly recommended that homeowners choose premium solar power inverters over premium solar panels.

It’s also recommended that you install up to 33% more solar panels than the solar power inverter is rated at, It is recommended that you install 4 kW of solar panels with a 3 kW solar power inverter. You’re going to 33% more solar power rebate, and lots more solar power in the winter, mornings and evenings. It’s also going to be a very efficient use of the solar power inverter. In many areas, the smaller the solar power inverter, the easier it is to get permission to connect to the electricity grid.

The Racking/Mounting

The third main component of a solar power system is going to be the racking/mounting. This is what makes a solar panel installation a safe and viable option. The mounting attached to your roof supports and is what your solar panels are mounted on.

There is a wide variety of racking brands out there. The difference between a budget end brand and a premium end brand is going to be around $100 per kilowatt of solar power that is installed.

Measure How Much Electricity Your Home Uses

When the solar electricity is being generated by the solar panels, it is going to be first used by appliances in your home, with any excess solar power that is exported to the grid. Your electric utility will pay you a small amount for each kWh that your solar panel installation sends back to the grid.

But you should remember that it is important to use the solar power being generated by your solar power system than export it. Self-consumed solar electricity will save you money because you aren’t going to have to buy that energy from the grid. Self-consumed solar electricity is going to be 2-3x more valuable than exported solar electricity.

If you’re at home during the day or have a pool pump that is going to be running all day long, your electricity consumption can be up to 65%n and a solar power system is going to, more than likely, be a very good investment.

But if you aren’t home during the day, you are typically going to use about 20% of the output of an appropriately sized solar power system, pushing the payback out to 6-8 years.

You should avoid any solar company that calculates your payback period based on 100% self-consumption. Almost no-one is going to have 100% self-consumption. The company is just being dishonest to get your sale.

How Many Solar Panels Do You Need?

For most homes, at the least, homeowners should consider buying 6.6 kW of solar panels with a 5 kW solar power inverter.

Often, homeowners are going to regret that they didn’t factor in how winter and overcast days are going to limit their savings. They wish that they would have installed more solar panels to the initial quote that can be surprisingly cheap.

How Are You Going to Pay for Your System? 

There are going to be a few different ways that homeowners can pay for solar panel installation. When you buy a solar power system outright with the case, the solar panel installation is going to generate a tax-free, reliable return that, at the time, it is far higher than bank rates or government bonds.

But, some aren’t going to have the luxury of buying the solar panels with cash. A lot of solar installers are going to offer “no interest” finance - and if that sounds too good to be true, it’s most likely going to be because it probably is.

All of the finance is going to have a cost - the “no interest” deals are often going to charge the solar installer a fee of around 15-25% on top of the cash price. That cost is then passed on to you.

Solar system price checker

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