An AC-coupled retrofit involves installing a separate inverter for your battery, allowing you to keep your existing solar inverter. Without the need to redesign or rewire your solar panel system, this option is typically more affordable upfront. Contact online >>
An AC-coupled retrofit involves installing a separate inverter for your battery, allowing you to keep your existing solar inverter. Without the need to redesign or rewire your solar panel system, this option is typically more affordable upfront.
If you''re wondering whether or not you can install batteries in your existing solar system, the answer is yes! There are several ways you can integrate battery power into your existing solar system.
Once you''ve chosen your installer and your equipment, it only takes a few hours to retrofit the battery to your solar panels. Then you''ll be optimizing your solar investment and enjoying free, clean energy at all times of day. Learn more about Panasonic''s new EVERVOLT® home battery system and how it can help you save more money on energy.
Retrofit solar batteries can significantly increase your energy independence and provide backup power during outages. Assessing your current solar system is crucial before deciding to retrofit a battery. Choosing the right battery depends on factors like capacity, power rating, and compatibility with your existing setup.
For years, batteries have been a way to store excess power for solar systems. But until recently, they only made sense for a few, mostly off-grid solar systems due to their high cost and low efficiencies. However, as battery prices continue to decline and batteries become more and more effective, they are also becoming a viable option for many grid-tied solar systems.
Batteries may not have made sense if you installed your system a few years ago. But as the market changes and technology advances, you may find yourself wishing you could take advantage of energy storage.
As the sun shines, your solar panels collect the energy and turn it into DC electricity. The electricity is then sent to your inverter, which converts that power into AC electricity – the form you can use in your home or business. As your system produces energy, it''s used to power your lights, appliances, and devices. But what happens when your system produces more electricity than you use?
If you install a battery, here''s where it comes in. When you''re using more electricity than your solar system is producing, you can draw on energy stored in a battery instead of drawing it from the grid.
In most cases, adding a battery to an existing grid-tied solar system is possible, however, the level of difficulty is dependent on whether or not your system was designed with the intention to do so. Here are the ways to install a battery in your existing solar system.
Best-case scenario, you knew you''d eventually want to install batteries and planned for it when having your system installed. Maybe you were waiting for prices to drop or wanted to keep the upfront investment during installation as low as possible. Either way, you prepared yourself for the future. Your inverter is ready for the installation of a battery when it makes financial sense to you. This is the cheapest and easiest option, requiring less labor and materials than the other two options.
With a DC Coupled System, your inverter will be replaced by one that works with a battery and a solar system. These are known as hybrid inverters. DC power produced by your solar panels is used to charge the battery. From there, the power is passed through the hybrid inverter, which converts the power into AC electricity. Then, the AC power can be used either in your home or business or go to the grid.
DC Coupling could be a great option for you if you''ve had your solar system for some time and your inverter is approaching the end of its expected life. Most string inverters last fifteen years, so replacing your inverter a little earlier with one that works with a battery could be to your benefit.
The next option, an AC Coupled System, uses your traditional inverter in addition to a second inverter, or a "storage inverter," that charges the battery. DC power produced by your panels goes to the inverter and is converted to AC power as it always has. From there, the inverter sends it to your building if you''re using electricity, to your battery if you''re producing more electricity than you''re using, or to the grid if your battery is fully charged.
Typically easier to install, AC Coupling offers flexibility in terms of location, works with a variety of inverters, and is likely to be a lower-cost option. However, it is slightly less efficient. Electricity stored on the grid and used in your home is AC, but batteries store DC power. For the battery to provide power you can use in your home or business, it must then be converted to AC power. This extra step causes more energy to be lost compared to DC Coupling.
One benefit of installing batteries is your ability to access electricity when there is a power outage in your area. Though this could be an important benefit to you, there are a few other things to consider when deciding whether or not adding batteries to your solar system is the right choice.
Some utilities charge time-of-use (TOU) rates. These rates fluctuate depending on the time of day. When electricity demand is higher (often in the afternoon and early evening), you pay more per kWh than what you would when fewer people are using electricity (like at 3 a.m.). If you have batteries with your solar system, you can help avoid paying these increased rates by drawing on the stored energy in your batteries.
Similarly, demand charges are fees levied on the customer based on the period they use the most electricity or their usage during a peak period. It is based on the highest amount of power reached during a specific time interval. That fee is added to the customers'' bill. These are typically associated with commercial and industrial facilities, not residences.
However, if you don''t have these fees, you may want to rethink if it''s a worthwhile investment. While decreasing your reliance on the grid may seem attractive, net metering is a cost-effective way to access power when your solar system isn''t producing. Check out the Policy Overview from the National Conference of State Legislatures to find out your state''s policy on net metering.
Though batteries are quickly coming down in price, a cheaper option for a backup energy source is a generator. Generators of various brands and models can be purchased at your local hardware store and can be transported to various locations. However, they are limited by the amount of fuel you can store and transport. For more on the comparison of batteries and generators, check out this blog.
Most generators can also be transported and used at your location of choice. This makes it easy to supply power wherever you need it. You''re just limited to the amount of fuel you''re able to store and transport.
When deciding if adding a battery to your existing solar system is right for you, there are many things to consider. Give us a call or send us a message to discuss your options!
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