Solar Southwest Florida

Should you do-it-yourself (DIY) for a solar panel installation in Florida? While is is completely permissible and possible to install solar on your home or business, it is not recommended.

I’m a self-taught guy in many disciplines, and I love to do home maintenance myself. Learning new skills is part of who I am. Learning the solar energy trade was not easy. Here are some reasons why you may not want to do-it-yourself:

Solar Electric (PV or Photovoltaic Systems)

1. PV Systems involve dangerous DC voltage and AC voltage electricity. You may be able to wire a ceiling fan or a light. That does not qualify you to perform complex wiring for a solar electric system. Grounding is a special concern for PV systems and can be quite complex.
2. Requirements vary from jurisdiction to jurisdiction. The City of Fort Myers’ and Lee County’s building departments have very different interpretations for some key code sections. Navigating this maze will cause you serious frustration and cost.
3. The larger solar panels popular today are heavy. Working with solar panels on your roof is not an easy task.
4. There is no such thing as a cookie-cutter or plug-and-play solar electric system. Even newly introduced microinverters require careful electrical design considerations. You will need both a structural engineer and an electrical engineer to draw up plans for you.
5. Solar energy systems can be monitored by your dealer, ensuring that you have a second set of eyes on the system to maximize performance and identify problems.

1. Roof mounted solar energy systems usually require roof penetrations. Do you know how to maintain your roof warranty? Who are you going to call if you get a roof leak? Amateur roof attachments are the #1 reason that DIY solar installations fail.
2. The labor to install solar energy systems is a relatively small fraction of the price of a system. This can easily be recouped by a trouble-free installation. The competition in the Southwest Florida market is robust, so dealer prices (and profits) are held to a minimum.
3. Design wind speeds required in Southwest Florida range from 120 mph – 150 mph. Do you know how to ensure proper roof attachments?
4. Solar dealers have relationships with building departments that enable smoother inspections. Knowing the requirements (idiosyncrasies) of particular jurisdictions is very valuable.

If you choose to proceed with a do-it-yourself installation, plan to be mostly on your own. Your local solar dealer can’t compete with online retail pricing, so you are better off getting solar products online for DIY projects (except solar pool heating). That means you are probably going to be on your own. Make sure you understand the job ahead of you fully, because dealers are hesitant to work with equipment purchased from another source. These products are often incompatible with the dealer’s typical brands, and specialized knowledge in the product may not be readily available locally. And assisting with DIY projects may open a solar dealer up to liability risk they are not willing to take on.

It’s not that your local solar dealer doesn’t want to help you with a DIY project. It’s just not cost feasible. If I could stock solar panels and sell them to you for a DIY project at a price you would find acceptable, I certainly would!

I obviously have a dog in the hunt here. I want you to use Fafco Solar for all of your solar needs. With the labor being a relatively small fraction of the cost to install solar, you are honestly best off leaving it to the professionals. It’s not rocket science, but you will save yourself a lot of headaches, and probably money in the long run.

You may have seen the promise of plug-and-play solar panels coming to a store near you. I’ll try to make sense of these “new” products and tell you what they will and won’t do for you. There are two kinds of “plug-and-play solar panel” promises floating around out there. There is the solar panel that you can plug into your house and use or sell back to the utility, and there is the solar panel system into which you plug devices directly.

The first “plug-and-play solar panel” product promises that you can plug your solar panels into an existing outlet and feed power back into your home. This is completely unsafe and will not meet any building code in existence. This would require that the system have a male plug that you insert into the outlet. Guess what – that plug with exposed metal conductors could have live power on it (unless the inverter is listed to UL 1741 – let’s not get too technical here!) Even if the proper inverter were used, there are numerous National Electric Code sections that would not allow its use in this manner. No utility company would allow this power to be sent back to the grid. This is not an approved interconnection method, and it is completely unsafe.

Consider that you have a 15 amp circuit breaker feeding a string of outlets in your home. The wire and outlets on that circuit are capable of safely supplying 15 amps of power. If you plug a solar panel’s output into an electrical outlet, you have increased the amount of power available to that wire and all receptacles on the circuit. Furthermore, there is no way to restrict the number of solar panels that a homeowner would plug into a circuit. The homeowner could theoretically install dozens of solar panels into power strips on a single circuit. Hopefully the closest fire station is close by…

The second kind of “plug-and-play solar panel” is really nothing more than a complete mobile off-grid solar electric system. The components include a solar panel, an inverter, and possibly a battery. With this system you can plug devices directly into the inverter output using a standard AC receptacle. There is nothing wrong with this concept, except that it has serious limitations in usefulness, efficiency, and value.

A new product of this kind from Onyx Service and Solutions Inc promises to revolutionize plug-and-play solar. There is really nothing new with this product except that it is larger and higher powered than most other portable solar power devices. I use the word “portable” loosely here because it’s hardly something you can pop in the trunk for an afternoon outing. The included 330 watt solar panel is at least five feet long by three feet wide. The premise of this product is to include a solar panel, a battery, and an inverter in a single box with a standard AC outlet. That’s great, but the amount of power generated and stored isn’t even enough to run a laptop computer for 24 hours.

This system cannot be attached to your home’s electrical system and it cannot sell electricity back to the grid. Don’t be misled!

This type of product is fantastic for small power needs, like charging phones, tablets, or other small devices, or using some higher powered devices for shorter periods of time. They key is to make it portable enough. There is a nice consumer product line from Goal Zero that is perfect for modest power needs, and it does exactly what the Onyx system does, albeit on a much less powerful scale, but it is truly portable.

The promise of “plug-and-play solar panels” is a long way away. There is hope. The best opportunity for a plug-and-play type system may be using a transfer switch similar to the generator input to a home. One thing is certain – you will need to upgrade your home wiring or provide a proper receptacle that in some way makes this type of installation safe, and it will need to be done under the current or future requirements of the National Electric Code.

The best bet in solar electric today is still the basic grid-interactive solar electric system. Don’t be misled by promises of new revolutionary products that can’t deliver. If you want a portable consumer grade solar energy system, educate yourself on the limitations, and if it meets your needs, by all means, proceed!