How Much Does An Inverter Cost For Solar Panels?

For an average-sized project, inverters typically cost between $1000 and $1500. However, when the installation grows in size, the cost might soon rise.

How much does a solar inverter for a home cost?

It’s difficult to pin down the cost of a solar PV inverter to a single figure because each system is unique. The size of the photovoltaic inverter depends on the total system design, and it can be scaled up or down based on the energy demands of your home.

Furthermore, because installers usually buy in bulk and have direct contacts with suppliers, their prices may differ from what you’d pay if you bought directly.

String inverter prices normally range from $1,000 to $2,000 or more, depending on the size of the system, the type of solar deal, the vendor, and any unique aspects to your area.

Prices for power optimizers normally run from $50 to $200 or more, but keep in mind that you’ll need one for each solar panel, as well as an inverter to connect them to.

Microinverters are more expensive than string inverters, costing up to $1,000 more for the same size system than a comparable string inverter. Keep in mind that string inverter sizing can be changed at a lower incremental cost, thus a string inverter twice the size isn’t always twice the price. Microinverters, on the other hand, must be installed on each panel, therefore doubling the number of panels will almost certainly quadruple your inverter cost.

How much does a solar panel power inverter cost?

For an average-sized project, inverters typically cost between $1000 and $1500. However, when the installation grows in size, the cost might soon rise.

How much does a solar inverter cost?

  • String, hybrid, and battery inverters should be placed near the main switchboard on a shaded wall. Although inverters are supposed to be located outside and are normally waterproof, they do not like to be exposed to extreme heat because it reduces their performance and lifespan.
  • If you can’t install your inverter in a shaded area, your installer should recommend covering it with an awning. Awnings with specific functions are offered. A waterproof housing may be required in some instances.
  • Take safety into account as well. If they’re in a convenient location, string inverters can be an enticing target for a skilled thief. Theft is uncommon, but not unheard of. It’s ideal to install behind a fence or in a secured area. Anti-theft locking mechanisms are included into some models.

How much does an inverter cost?

  • Inverters with strings: The price of an inverter is determined by its size and brand. A string inverter can cost anywhere from around $1000 to over $2000.
  • The cost of microinverters is mostly determined by the number of panels in the system and their rated output. A microinverter can set you back roughly $200. A system using microinverters is expected to cost roughly 20% more than a system with a string inverter, according to most estimates.
  • Optimisers are similar to microinverters in terms of cost, however they are slightly less expensive. Adding optimisers to a few panels that are in desperate need of them, on the other hand, could cost only a few hundred dollars.
  • Hybrid inverters range in price from $1000-$2000, with several units costing $3000 or more.
  • Battery inverters: If a battery requires a separate battery inverter, the overall cost of the installation will normally increase by $2000-$3000.


  • Your inverter should last at least five years and should have paid for itself by then but preferably should last ten years or longer.
  • Inverter warranties are usually five years, however search for guarantees of ten years or more to cover the unit’s expected lifespan. SolarEdge, for example, gives a 12-year warranty, while Fronius offers a five-year warranty plus a free five-year extension if you register the system online.
  • Extended warranties are frequently offered, but they normally come at a cost. We don’t normally advocate extended warranties for most products, but in the case of your inverter, they might be worth considering for peace of mind, especially if you can get one for a good price.
  • SolarQuotes’ Finn Peacock investigated inverter manufacturer support for customers who have a problem with their inverter but can’t receive help from the original installer since the installer is no longer in business, for example. The good news is that almost every company has said that they will assist consumers in these situations and will back direct warranty claims.
  • If your system (including the inverter) has already paid for itself, as it normally does after around five years or so, Glen Morris of the Smart Energy Lab in Victoria points out, it’s not necessarily a tragedy if your inverter fails outside of its warranty period. While being without solar for a while and paying for a new inverter is inconvenient, you’ll likely obtain a better, more advanced inverter for the money than you could a few years ago.

What is the lifespan of a solar inverter?

According to EnergySage, a typical centralized home string inverter will last 10 to 15 years and will need to be changed at some point throughout the life of the panels. Standard warranties for string inverters range from five to ten years, with many having the ability to extend to twenty years.

For solar panels, what size inverter do I need?

Inverters aren’t the first item that comes to mind when thinking about going solar, but they’re an essential component of any system. What is the best way to set up inverters in your system? What size do you require, and how do I go about putting one in place that is ideal for my solar installation?

Yes! Inverters act as a link between your photovoltaic system and the devices and appliances that use the energy it generates. They convert the direct current (DC) generated by your solar panels into alternating current (AC), which is the norm for all business equipment.

To power most appliances and devices, from laptops to microwaves, you’ll need an inverter to convert DC to AC. Any solar panel with a power output more than five watts usually requires the use of a solar inverter.

In off-grid systems, a charge controller sends power to a battery bank, which is subsequently converted to AC for the home via an inverter. Stand-alone inverters, often known as off-grid inverters, require a battery bank to operate. When choosing off-grid solar inverters, be sure that the inverter’s output power is sufficient to sustain the system’s demands. Many off-grid solar inverters come with a charger to keep the battery charged.

If you’re installing an off-grid system, you’ll probably have to choose between a pure sine wave and a modified sine wave inverter.

Pure Sine Wave Inverters: Pure sine wave inverters produce smooth, quiet, and reliable electricity that may be used to power appliances and devices without causing any interference. Pure sine wave inverters create current in the shape of a pure sine wave, as the name implies. Renogy offers a variety of pure sine wave inverters in a variety of capacities to suit your solar installation and energy requirements. To prevent damage to the components and the device, Renogy inverters have overload protection for both the DC input and AC output.

Modified Sine Wave Inverters: Unlike a real sine wave, the polarity of modified sine wave inverters quickly flips from positive to negative. When glancing at the wave, the polarity is reversed back and forth in a stair-step, square pattern. More delicate, sensitive electronics may be harmed by the rough wave. You won’t be able to utilize a modified sine wave inverter if you need to power medical equipment like a CPAP machine. Additionally, gadgets connected to a modified sine wave inverter will often produce a hum. Modified sine wave inverters, on the other hand, are commonly used in simple gadgets and appliances.

Modified sine wave inverters can be purchased and utilized in simple systems without sensitive electronics if you’re trying to save money. You might be fine if the device doesn’t have an AC motor or isn’t a delicate piece of medical equipment. A modified sine wave inverter will usually work with old tube televisions, water pumps, and phone chargers.

Appliances with AC motors, such as refrigerators, microwaves, and compressors, will not run as effectively on a modified sine wave inverter. Some fluorescent lights will also be less bright, and some may emit buzzing or humming noises.

Although some argue that not utilizing a pure sine wave inverter would lower the longevity of your laptop’s battery, your laptop may be fine with a modified sine wave inverter.

  • Modified sine wave inverters are often less expensive than pure sine wave inverters, so if you’re on a budget and simply need to power a few simple items, modified sine wave inverters may be sufficient.
  • Modified sine wave inverters are not nearly as efficient as pure sine wave inverters in terms of efficiency.
  • Many appliances will not operate with it: As previously stated, a pure sine wave inverter is required to run a range of appliances such as televisions, microwaves, and inverters.

Pure sine wave inverters are often the best choice if your budget permits it because they can power nearly all appliances, are efficient, quiet, and safe. Renogy’s pure sine wave inverters are designed to fulfill your off-grid system’s requirements.

Inverters with a power rating of more than 500 watts must be hard-wired to the battery bank. The cable size you should utilize is specified in your inverter’s owner’s manual. The length of the cable is also determined by the distance between the inverter and the battery. It’s always a good idea to utilize the minimum wire length possible. When connecting an inverter to a battery, we recommend using an overcurrent protection device between the two devices, such as a fuse or circuit breaker.

Safety disconnects for AC and DC are also required in all systems. A DC disconnect is installed between the battery bank and the inverter in off-grid solar installations. This is used to turn off the current flowing between the two components, which is useful for maintenance, troubleshooting, and fire prevention.

Solar inverters are available in a variety of sizes. Inverters, like solar panels, are measured in watts. Because your solar inverter transforms DC electricity from the panels, it must be able to manage the entire amount of power generated by your array. As a general rule, you should match the wattage of your solar panels. So, if your solar panels are 3000 watts, you’ll need at least a 3000 watt inverter. Do you need assistance determining how much solar power you’ll require to meet your energy requirements? To determine your demands, use the Renogy solar calculator.

Pure sine wave inverters from Renogy range in size from 700 to 3000 watts. Inverter chargers are also a good choice for folks who live off the grid but need to connect to shore power on occasion. When connected to shore power, the Renogy 2000W Pure Sine Wave Inverter Charger can charge and maintain a battery bank in addition to converting DC to AC.

Off-grid solar can be an excellent method to satisfy your energy needs if you live in a remote place or on the open road without reliable and inexpensive grid access. Understanding how off-grid inverters are setup and utilized can put you on the right track to constructing a safe, efficient, and powerful solar installation that will meet all of your energy needs.

What makes solar inverters so costly?

For starters, Redarc is a well-known and well-respected inverter brand. As a result of this reputation, costs are frequently higher.

Redarc inverters are also of higher quality than other inverters, which contributes to their higher cost.

The components required to generate a clean sine wave output may be more costly, resulting in a higher inverter cost. Despite these disadvantages, Redarc inverters have numerous advantages that justify their higher price tag.

For example, they create less harmonic distortion, have a smoother output, and are more efficient than other inverters. As a result, Redarc inverters are frequently regarded as among the best inverters available.

a) Can it be used in Australia and is it approved?

When purchasing a solar inverter, the first thing to look for is compliance with the relevant Australian Standard (AS4777). Check out the Clean Energy Council’s authorized products list to do so swiftly.

This list should include all grid-connected solar inverters that have been certified for use in Australia. If the one you’re considering isn’t, don’t buy it (unless you’re looking for a thrill!). The other reason for purchasing a solar inverter from the approved products list when purchasing a full solar power system is that it must be on the list at the time of installation in order for your system to be eligible for Australia’s substantial solar subsidy.

It’s also worth investigating the company that created the product how long have they been in business and what are their areas of expertise?

b) How much should I pay in 2022?

Because grid-connected inverters are typically sold as part of a solar power system package, this is a challenging topic to answer. This component can account for up to 20% of a system’s total cost.

The cost of a 5kW solar inverter ranges from $1,000 for budget single-phase versions (such as Sungrow) to $2,000 for luxury single-phase ones (e.g. Fronius or SMA).

The most typical size is 5kW, which may hold up to 6.6kW of panels. I go into greater detail about this below.

But whatever you do, don’t go for the cheapest solar inverter available! In Australia, the truly cheap products have no chance of lasting more than 15 years. Please believe me when I say this. Designing and manufacturing a reliable solar inverter that can last is challenging and expensive, especially in Australia’s sometimes severe climate. Never buy a no-name brand’s bottom-of-the-line product. It’s a waste of money because it won’t last (much like the corporations selling them!).

c) What is the best solar inverter size (capacity) to buy?

In general, the inverter must be able to manage at least the maximum power generated by your solar power system. If you want a 5kW solar power system, you’ll typically get 5kW of panels and a 5kW solar inverter to match. Isn’t it simple? It can get a little more difficult than that, though. Allow me to explain.

Your solar inverter may be rated at up to 25% less (in AC kW) than your panel array in specific scenarios due to system losses in the panels.

Confused? For a long time, so were a lot of installers! The Clean Energy Council’s criteria for solar inverter sizing changed a while ago, and I go over when ‘undersized’ inverters are allowed in detail here.

Finally, keep in mind that solar inverters are rated in terms of “DC input” and “AC output.” Check to see if yours is rated for the DC power of your solar panels! (How to check this is explained in the previous link.)

Some suppliers may provide you with a larger solar inverter so that you can add more panels later. You should think about the following things before buying one of these:

  • Do I have enough roof space to install new solar panels? (otherwise, it’d be pointless)

Your present solar panels may not be available when you want to upgrade due to rapid advancements in solar panel technology. Your inverter may be unable to tolerate the mismatch of solar panels, necessitating the purchase of a new one. Consider a multi-string or MPPT expandable solar inverter as a solution to this potential problem (see below).

In general, the best suggestion is to get as many solar panels as you can afford (and fit on your roof) and a solar inverter that can handle the system’s maximum power.

Inverters that are grid connected come in a range of shapes, sizes, and weights. String inverters as small as a large suitcase are available. The bigger ones are around the size of a compact suitcase.

They are usually placed as close to your electricity meter as possible and should always be in the shade for optimal performance. It’s worth noting that this could possibly be a warranty requirement. If you don’t have a good shaded location, a simple shade cover should suffice.

The best suggestion is to examine the solar inverter (or review its specification sheet) to see whether it will fit near your electricity meter and how it will appear once installed.

d) Is it weather-proof?

Most grid-connected inverters are weatherproof (usually rated IP65), allowing them to be installed in locations where they may be exposed to the elements. Other solar inverters are not weather-proof, and exposing the inverter to the elements may necessitate the purchase of a weather-proof cage (at an additional expense to you).

Your solar inverter is, in general, a box of delicate electronics, and the more it is protected from heat and weather, the better it will operate and last. It may also be a warranty requirement that the equipment not be installed in direct sunlight.

Check these details on the specification sheets or inquire with your store about where your solar inverter will be installed.

e) How good is the warranty?

Grid-connected inverters typically have a lifespan of 10 to 20 years. The majority of high-quality units should survive at least ten years.

The warranties for solar inverters range from 5 to 12 years, with a growing number of manufacturers offering pay-for-service warranty extensions. Most retailers now give a guarantee of 8 to 10 years. Obviously, the longer the guarantee, the better your protection.

Some manufacturers (like as Fronius) provide a “5 + 5” year warranty, which covers parts and labor for the first five years but only components for years six through ten. This means that if your inverter breaks down in year seven, you’ll have to pay roughly $200 in labor charges to replace it.

So look into the unit’s warranty and weigh it against other aspects of your system to help you make an informed decision about which solar inverter is ideal for you.

f) Is the inverter expandable?

If you plan to extend your solar power system in the future, this is an important factor to consider.

At this time, the best solution is to use numerous MPPT (Maximum Power Point Tracking) inverters. These solar inverters contain several MPPT trackers, allowing you to add more solar PV panels or install them in different orientations at a later time. This will allow you to simply add a new string of panels to your current system (even if the new panels are not identical to the old modules).

Some solar panels contain a micro inverter, which is a small MPPT inverter mounted to the back of the module. These could allow several solar panel models to be used in the same solar power system, overcoming shading concerns and allowing for individual solar panel monitoring.

g) What about the display?

The display lights on most solar inverters indicate whether the unit is on, off, or in standby mode. They can also have digital displays (typically scrolling screens) that show one or more of the following:

  • the quantity of electricity you’ve produced (in kilowatt hours) since the unit was installed,

Some of this data (for example, the total quantity of energy generated) can be found on your meter.

Some meters have a data-logging option that allows you to download data to a computer or send it over Bluetooth or your Wi-Fi network. This means you can monitor your power usage on your computer, smartphone, or a unique in-home display.

I’m not interested in looking in the meter box (or waiting for the bill) to see if my system is working properly. In the house, I’d like to have a remote monitor that I can check every day. As a result, I believe remote monitoring and data logging are essential.

If your provider wants to charge you more than $250 for remote monitoring, you might think about doing it yourself.

h) How efficient is a grid connected inverter?

The efficiency of an inverter is a measure of how successfully it converts the electricity it gets from solar panels into power that can be used in your home or exported to the mains electrical grid. Most grid-connected transformer-based solar inverters (which are quite rare these days) have an efficiency of approximately 93 percent or higher, while transformerless devices typically have an efficiency of around 95 percent or higher.

Only if two similar solar inverters had significantly different efficiency would efficiency become a factor.