A whole home solar system goes beyond a standard grid tied setup by pairing solar panels with a battery storage unit, giving Phoenix homeowners a continuous power supply even when the utility grid goes down. During the day the system generates and uses solar power as normal, stores any surplus in the battery, and automatically switches to that stored energy during an outage without any interruption to the home. Phoenix Valley Solar is an independent solar broker that helps homeowners in Phoenix, Scottsdale, Goodyear, Sun City, and across the Valley compare vetted installers and financing options to find the right whole home solar configuration for their energy goals and budget.
Whole-Home Solar with Battery Storage in Phoenix, AZ
A whole-home solar system takes everything that makes standard grid-tied solar powerful and adds full energy independence on top of it. By pairing solar panels with battery storage, Phoenix Valley homeowners can generate their own power, store what they do not immediately use, and keep their home running through grid outages, peak rate windows, and summer storms. As an independent solar broker serving Sun City, Goodyear, Scottsdale, Surprise, Fountain Hills, and the greater Phoenix Valley, Phoenix Valley Solar helps you evaluate whether a whole-home system is the right fit — and connects you with the right local installer if it is. Start with our free Solar Calculator to see your estimated savings.
What Is a Whole-Home Solar System?
A whole-home solar system combines solar panels with a battery storage unit and an automatic transfer switch, allowing your home to operate independently from the APS or SRP grid when needed. During normal operation it functions like a standard grid-tied solar system, generating power from sunlight and using net metering credits to offset your utility bill. The key difference is what happens when the grid goes down, or when you simply want to stop drawing from it entirely.
When grid power is interrupted, your system's automatic transfer switch activates instantly, routing stored battery power to your home's critical circuits or your entire electrical panel, depending on how the system is configured. For homeowners in Sun City, Surprise, and Goodyear who have experienced summer outages during the hottest weeks of the year, that reliability is more than a convenience, it is essential.
Key Components of a Whole-Home Solar System.
Solar Panels (PV Modules)
The foundation of the system. High-efficiency photovoltaic panels capture Arizona's abundant sunlight and convert it into DC electricity throughout the day. Phoenix's 300-plus days of annual sunshine make this the most productive solar market in the country on a per-panel basis. Learn more about solar panel technology.
Inverter
Converts DC electricity from your panels into AC electricity your home runs on. In a whole-home system the inverter also manages the flow of power between your panels, your battery, and the grid, a more complex job than a standard grid-tied inverter handles. Hybrid inverters are commonly used in whole-home configurations for this reason.
Battery Storage
The component that separates a whole-home system from a standard installation. Your battery stores excess solar production during the day for use at night, during peak rate windows, or during outages. Battery capacity, chemistry, and compatibility with your inverter are all critical factors in system design. Read our full battery comparison to see how the top options compare for Arizona homeowners.
Charge Controller
Manages the flow of electricity between your panels, battery, and home appliances, ensuring the battery charges and discharges efficiently and safely. A well-configured charge controller extends battery lifespan and maximizes the value of every kilowatt-hour your system produces.
Automatic Transfer Switch
This is what makes true backup power possible. When grid power is lost, the transfer switch detects the outage and instantly shifts your home from grid power to battery power, no manual intervention required. The transition is typically seamless, meaning your appliances, HVAC system, and devices stay on without interruption.
How a Whole-Home Solar System Works in Phoenix
During daylight hours your panels generate electricity that powers your home directly, with any surplus going first to charge your battery and then to the APS or SRP grid via net metering. This order of priority is important, you fill your battery before exporting, which means you maximize the value of every kilowatt-hour you produce rather than sending it to the grid at the utility's lower export credit rate.
In the evening your home draws from your battery rather than the grid, avoiding peak rate charges that hit hardest during Arizona summer evenings. When your battery is depleted your system draws from the grid as usual, with net metering credits offsetting those charges.
During an outage your transfer switch activates automatically, isolating your home from the grid and running your home entirely on battery power until the grid is restored or your battery needs recharging from the panels the following morning.
For APS and SRP customers on time-of-use rate plans, this combination of peak shaving, battery discharge during high-rate evening hours, and outage protection delivers the most comprehensive financial and practical value of any residential solar configuration available. Learn how APS and SRP rates affect your solar savings.
Benefits of Whole-Home Solar for Phoenix Homeowners
Uninterrupted Power During Outages
Arizona summers push the grid hard. Between extreme heat, monsoon storms, and the growing demand from data centers and population growth in the Valley, grid outages are a real and increasing concern. A whole-home solar system keeps your home running regardless of what happens on the APS or SRP grid, your HVAC, refrigerator, medical devices, and critical appliances stay on.
Energy Independence
From APS and SRP With a properly sized whole-home system you can dramatically reduce or nearly eliminate your dependence on grid electricity. For homeowners in Sun City, Goodyear, and Fountain Hills who are watching APS and SRP rates climb every year, locking in your own energy production is the most effective long-term hedge available.
Maximum Savings on Time-of-Use Rate Plans
Both APS and SRP use time-of-use pricing that charges significantly more during peak hours. A battery-equipped system lets you consume your stored solar energy during those expensive windows rather than drawing from the grid, which is where the biggest savings opportunities exist for Phoenix Valley homeowners on these rate plans.
Increased Home Value
Whole-home solar systems with battery storage command a premium in the Phoenix real estate market, particularly in Scottsdale, Fountain Hills, and other high-demand suburbs where energy-conscious buyers are willing to pay more for a home that is genuinely grid-independent.
Environmental Impact
A whole-home solar system with battery storage maximizes your offset of grid electricity, reducing your household's reliance on fossil fuel-based generation more completely than any other residential configuration.
Is Whole-Home Solar Right for You?
Whole-home solar is the right choice for homeowners who want true energy independence, need reliable backup power, or want to maximize their savings on APS or SRP time-of-use rate plans. It does require a larger upfront investment than a standard grid-tied system, which is why understanding your financing options is essential before committing.
If backup power and energy independence are priorities but the budget for a full whole-home system is not there yet, a standard grid-tied solar system is a strong starting point that can often be expanded with battery storage later. Contact us and we will walk through the honest comparison for your specific situation.
How Phoenix Valley Solar Helps You Get the Right Whole-Home System
Whole-home solar systems are more complex than standard grid-tied installations, which makes working with an independent broker especially valuable. Phoenix Valley Solar does not sell one brand of battery or work exclusively with one installer. We compare options across more than 15 vetted local installers, evaluate battery brands and configurations side by side, and recommend what actually fits your home, your utility provider, and your energy goals.
That includes walking you through our most popular financing option, the prepaid solar lease with 30% upfront savings, which is available for whole-home configurations and delivers the full benefits of battery-backed solar without the burden of a loan or monthly lease payment. Learn why homeowners across the Phoenix Valley choose us.
Ready to find out if whole-home solar is right for your home? Use our free Solar Calculator to estimate your savings, explore all our solar services, or contact us to schedule a free no-obligation consultation. You can also learn more about solar financing options to see how the prepaid lease compares to buying outright.