How Long Do Solar Panels Last In Arizona?

Solar panel installation has been rapidly increasing in recent years, thanks to a growth in the popularity of solar power systems for home usage. The question of how long these solar panels will last is a major concern for homeowners. The cost of installing a solar power system is an essential consideration. Even with possible government incentives, you want to ensure that the panels are durable and will last a long time before investing thousands of dollars in solar power installation. Let’s look at how long solar panels will last on your roof so you’ll be prepared and know how to keep them in good working order.

It’s critical to have your roof evaluated before installing solar panels and moving forward with a new solar power system. People frequently make the mistake of arranging solar panel installation only to discover later that their roof requires repair or replacement, according to Shelton Roofing.

Preventing roof deterioration or replacing your old roof before the installation can have a big impact on how long your panels last on the roof. With the amount of money you can save with solar electricity, a comprehensive roof inspection fee and even a few minor repairs if necessary is well worth the money to avoid higher costs in the future if the roof collapses or you need to replace panels damaged by a faulty roof.

It was discovered a few years ago that solar panels might survive up to 25 years. Most guarantees only went up to 20 years, and in some cases 25 years, depending on the sales and installation business. The National Renewable Energy Laboratory (NREL) predicted that solar panels would produce 1% less power on average per year.

That figure has altered over time, and it has now been determined that, with good installation and care, most solar panels only lose.5% of their value every year or less. Solar panels are now predicted to survive an average of 30 to 40 years, according to this new figure. Solar panels are now more equipped than ever before to resist cracking, which damages cells and occurs frequently during soldering when the panels are assembled, thanks to improved designs. Cracked cells will react as if they were a shaded panel, resulting in energy loss.

It’s critical to keep up with routine maintenance and perform repairs as soon as they’re needed. Most warranties today are typically 20-25 years, despite the fact that well-maintained panels can last up to 40 years. Whether the system is huge or little, a warranty ensures that the level of power does not fall below 80% for the duration of the warranty.

There are things you can take as a homeowner to assist extend the life of your solar panels. These are some of them:

Maintain the solar panels by keeping them clean and free of debris. If there are any huge trees near the home, keep them pruned so that branches do not fall onto the panels.

This takes us to the potential for the panels to be damaged. Scratching on solar panels can cause serious problems, and the bigger the scratches are, the more troubles you’ll have. Keep trees trimmed and ensure sure there’s nothing in your yard that could be thrown onto your roof during storms or high winds. While it is not always feasible to avoid events like these from occurring, taking measures to do so can assist.

Although solar panels are largely maintenance-free, there are several things you can do to boost your power output. Clean your panels with a garden hose when they’re dirty, in the early evenings, or before the sun fully rises in the morning. To avoid cracking, do not clean your panels when they are very hot. Leaves and other debris should be brushed away, and any tree branches should be pruned back from your solar panel installation. When cleaning your panels, never touch the wires!

A solar panel system, when properly constructed and maintained, may readily produce clean power for the next 25 years. Choose a solar installation firm that conducts a thorough roof inspection prior to installing solar panels and provides a comprehensive guarantee. The length of a warranty is usually a good indicator of the quality of a solar panel installation. That is why we strive to provide the industry’s longest and most comprehensive warranties.

Is solar worth it in Arizona?

Solar panels have dropped in price by roughly 40% across the board in the last several years. This, however, does not come at the expense of their output or quality. These systems have improved significantly in recent years, allowing you to save a significant amount of money on your electricity cost.

Sure, you want to know the specific figures and how much you’re looking to save when you question if solar is worth it in Arizona.

This article contains that information as well as some general solar system principles to assist you in making an informed decision.

  • Each regulated utility is required to provide annual reports on how they are implementing the new regulations, and the standards have paved the road for Arizona’s green future.
  • In 1997, the first commercial solar photovoltaic installation opened in Arizona. The $1.8 billion Agua Caliente Solar Project, one of the world’s largest solar projects, went online in 2014.
  • The Agua Caliente plant generates 250 megawatts, or enough electricity to power 35,500 houses.
  • The solar capacity of Arizona Public Service is 875 megawatts, which is enough to power 220,000 residences.
  • The Salt River Project established a goal of using renewable energy to cover 20% of its retail energy needs by 2020, a target the company claims it will accomplish if it continues on its current path.
  • Solar energy produced less than 3% of Arizona’s net electricity generation, according to the US Energy Information Association, although that figure is up 50% from the previous year.

Do you want to know what’s going on in the energy industry in Arizona? On Oct. 5, a panel of experts will discuss aerospace and other topics at the HEAT Forum.

What is the average lifespan of a solar panel before it needs to be replaced?

Solar energy is experiencing a hockey stick moment. The number of solar panels deployed worldwide has increased tremendously since the early 2000s, and this trend is anticipated to continue for decades. Globally, an estimated 222 gigawatts of solar energy had been installed by the end of 2015. That figure might reach 4,500 GW by 2050, according to a recent research (PDF) from the International Renewable Energy Agency.

However, the solar panels that generate that energy do not survive indefinitely. Because the industry typical life lifetime is roughly 25 to 30 years, some panels installed at the start of the present boom aren’t far from being replaced. With each passing year, additional glass and metal solar modules will be removed from operation, eventually amounting to millions, if not tens of millions, of metric tons of material.

“Those will be coming off line in the not-too-distant future, and we’ll have a waste management issue,” said Garvin Heath, a senior scientist at the National Renewable Energy Laboratory and a solar power expert. “It’s fair to say that it’s becoming more widely recognized as an issue on which we’ll need to go to work relatively soon.”

Are solar panels beneficial to Arizona?

Arizona’s RPS rule has been a major factor in the expansion of solar power in recent years. The Renewable Portfolio Standard (RPS) mandates that by 2025, the state’s Investor Owned Utilities (IOUs) source 15% of their power from renewable sources. They will be fined heavily if they do not comply.

In addition, Arizona has more sunshine than any other state. Solar panels in Arizona generate roughly 70% more energy than in states like New York. A high solar output indicates that fewer solar panels are required to get the specified output.


The cost of purchasing a solar system is relatively expensive at first. Solar panels, inverters, batteries, wiring, and installation are all included in this cost. Nonetheless, because solar technology is continually improving, it’s realistic to predict that prices will continue to fall in the future.


Although solar energy can be collected during overcast and rainy days, the solar system’s efficiency is reduced. Solar panels must be exposed to sunlight in order to collect solar energy. As a result, a couple of overcast, rainy days can have a significant impact on the energy system. It’s also important to remember that solar energy cannot be collected at night.

Thermodynamic panels, on the other hand, are an option to consider if you need your water heating solution to work at night or during the winter.

Check out our video for a breakdown of how effective solar panels are in the winter:

Is there a solar tax credit in Arizona?

Purchased home solar systems installed by December 31, 2022 are eligible for a 26 percent federal solar tax credit.


In Arizona, bought home solar systems are eligible for a 25% state solar tax credit. (Personal income tax deduction is limited to $1,000.) 6

In Arizona, do solar panels boost the value of a home?

According to AlternativeEnergyLLC, the answer is yes “In Arizona, solar panels can improve the value of your home by 2% to 3%. Choosing to lease solar panels, on the other hand, will lower the value of your home. A rented solar system can reduce the value of a home by 3% to 8% “Phoenix, Arizona” is a city in Arizona.

What proportion of Arizona is covered by solar panels?

Renewable energy generated roughly 16 percent of Arizona’s total net generation in 2021, from both utility-scale and small-scale (less than 1 megawatt) plants. Solar photovoltaic (PV) and solar thermal energy accounted for over three-fifths of the total. The rest was almost entirely provided by hydroelectric and wind energy. The contribution of utility- and small-scale solar-powered installations surpassed hydroelectric generation for the first time in 2017, surpassing hydroelectric generation for the first time. Solar energy accounted for around 9% of all power net generation in the state by 2021, with one-third of that coming from small-scale solar PV installations such rooftop solar panels. 51 Overall, Arizona is second in the US for solar energy potential, behind only Nevada, and fifth in solar net generation in 2021, trailing only California, Texas, Florida, and North Carolina. 52,53 Arizona is also one of four states with utility-scale solar thermal energy generation, which uses concentrated sunshine to heat the fluids that spin the turbines that generate electricity. 54,55 Arizona’s only solar thermal power facility is the Solana Generating Station in Maricopa County. It has a power output of over 300 megawatts. The largest solar PV facility in the state is also one of the largest in the country. Agua Caliente, which is located in Yuma County and has a capacity of about 350 megawatts, is that facility. 56,57 With more than 4,780 megawatts of total solar-powered generating capacity from both utility-scale and small-scale installations, Arizona is among the top five states in the country. 58

Hydroelectric power typically contributes for less than a tenth of all utility-scale net generation in Arizona. It only supplied around 5% in 2021, in part due to the state’s long-running (27-year) drought. 59,60 Glen Canyon Dam and Hoover Dam, both on the Colorado River in northern Arizona, are among the state’s most powerful power facilities and the country’s two highest concrete-arch dams. They generate the majority of Arizona’s in-state hydroelectric power. 63 Arizona is also one of only 18 states using pumped storage hydropower. 64 Pumped storage is a procedure in which water is pumped from a lower reservoir to an upper reservoir using low-cost power obtained during periods of low demand. Water is discharged from the higher reservoir and flows to the lower reservoir during moments of high power demand. Water travels between the reservoirs and generates electricity using turbines. A pumped storage plant consumes more energy than it produces, yet it provides power during peak demand periods when electricity prices are highest. 65 The three pumped storage plants in the state have a total capacity of around 220 megawatts. 66,67

Wind, biomass, and geothermal energy are all available in Arizona. The state’s first utility-scale wind farm is located just north of the Mogollon Rim in central Arizona, in a high-wind location. It was completed in 2009 and has a generating capacity of 63 megawatts. 68,69 The largest wind farm in Arizona, with 350 megawatts of generating capacity, went online in 2020. In 2021, Arizona’s six wind farms generated less than 2% of the state’s utility-scale electricity. Biomass supplied less than 0.5 percent of Arizona’s electricity, with the state’s largest biomass-fueled power plant providing practically all of it. Wood and wood-derived fuels are used in this plant. 70,71 Arizona biomass resources also provide feedstock for the state’s single wood pellet mill, which has a 60,000-ton annual output capacity. Wood pellets are used to generate electricity and heat. Wood is used to heat about one in every fifty homes in Arizona. 72,73 Deep, high-temperature geothermal resources exist in Arizona, notably in southeastern Arizona. Although they may be ideal for power generation, there are no utility-scale geothermal power facilities in Arizona. The state makes use of its geothermal resources for a variety of direct-use applications, including a thriving aquaculture business that raises shrimp and fish using geothermal energy. There are also a number of hot springs and a few modest spas throughout the state. 74,75

In 2006, Arizona passed a renewable energy requirement (RES). By 2025, regulated electric utilities must get 15 percent of their retail electricity sales from renewable sources. 76 Non-utility, customer-sited generating must account for 30% of the needed renewable energy target each year, with half coming from residential sites and the other half from non-residential installations. 77 The state enables net billing, which encourages small-scale, customer-sited renewable generating by allowing consumers to receive limited credits on their power bills for excess electricity generated and sent to the grid. 78 Arizona’s major utility declared in 2020 that by 2050, it intends to provide 100 percent carbon-free electricity, including nuclear power, with an interim goal of 45 percent renewable energy by 2030. 79 By 2035, another significant Arizona utility expects to generate more than 70% of its energy from wind and solar sources. 80 Arizona enacted an energy efficiency standard (EES) in 2010 that mandated investor-owned electric utilities, electric cooperatives, and natural gas utilities to improve energy efficiency and reduce electricity and natural gas use. 81 The Arizona Corporation Commission rejected a 100 percent renewable energy package in early 2022, which included a 10-year extension of the EES. 82