Already Have Solar? Here's How to Expand Your System with Battery Storage

Are you considering solar energy for your home in Phoenix? Now is the perfect time to harness the power of the sun and take advantage of significant savings through federal and state tax credits. Our team at Phoenix Valley Solar can help you navigate these incentives and maximize your savings. You can also use our Arizona Solar Calculator to get an estimate of your potential benefits.

If you installed solar panels a few years ago, you’ve likely enjoyed lower electricity bills and cleaner energy. But with rising utility rates and increasing energy use—from electric vehicles to smart appliances—many Arizona homeowners are now looking to expand their systems.

Whether you live in Phoenix, Scottsdale, or Mesa, adding battery storage or more panels can help you keep up with your needs and maximize your return on investment. A properly designed solar plus battery system in Phoenix can future-proof your home against rising costs and energy disruptions.

Why Homeowners Are Upgrading Their Solar Systems

There are several reasons homeowners decide to upgrade an existing solar setup:

• Increased electricity usage due to lifestyle changes

• Adding an EV, pool, or home addition

• Changes to APS or SRP rate structures

• Desire for backup power during outages

• Interest in storing solar energy for peak-time use

Whatever your reason, battery storage in Phoenix allows you to store energy instead of sending it back to the grid—and use it when it's most valuable.

Can You Add a Battery to an Existing System?

Yes, most solar systems can be retrofitted with battery storage. If you have solar panels in Mesa AZ or another part of the Valley, we’ll evaluate your current setup and determine:

• Whether your inverter is battery-compatible

• If your electrical panel has space for a battery connection

• How much storage capacity you need for your usage and goals

Home solar battery backup can be installed with minimal disruption, especially when handled by experienced professionals.

Benefits of Adding Tesla Powerwall

Tesla Powerwall installation in Phoenix is a top choice for system upgrades. Powerwall works seamlessly with most existing solar arrays and offers:

• 13.5 kWh of reliable energy storage

• Automatic switch-over during grid outages

• Real-time monitoring through the Tesla app

• Modular scalability—add one now, expand later if needed

With the right configuration, Powerwall helps you avoid expensive APS or SRP peak-time rates and gives you peace of mind during storms or service interruptions.

Expanding Your Solar Array

If your energy use has grown beyond what your current system can handle, adding more panels may be a smart move. At Phoenix Valley Solar, we help homeowners expand their original systems by:

• Matching new panels with existing equipment

• Designing additional arrays for new roof or ground space

• Updating inverters or adding microinverters as needed

• Ensuring compliance with APS and SRP guidelines

When done correctly, system expansion boosts long-term savings without starting from scratch.

Keep Your Incentives and Add More Value

Even if you already claimed the federal solar tax credit on your original system, your battery storage may still qualify for a separate 30% credit if it's added later and charged entirely by solar.

You’ll also benefit from:

• Arizona’s $1,000 solar tax credit

• Property tax exemptions on the added value

• Potential rebates and net billing benefits from your utility

Our team ensures every upgrade is documented and submitted to qualify for all available savings.

Why Work with Phoenix Valley Solar

We specialize in:

• Upgrading existing systems with solar battery storage in Phoenix

• Tesla Powerwall installation for new and legacy solar arrays

• Solar panel installation in Scottsdale and surrounding cities

• Adding new panels to older systems for growing energy needs

• Custom design and full utility compliance for every project

We take the guesswork out of system expansion and help you build a solution that fits your home today—and tomorrow.

Get More from the System You Already Have

Contact Phoenix Valley Solar today for a free assessment. Whether you're adding battery storage, expanding your panel count, or both, we’ll design a plan that keeps your home efficient, secure, and ready for the future.

Are you considering solar energy for your home in Phoenix? Now is the perfect time to harness the power of the sun and take advantage of significant savings through federal and state tax credits. Our team at Phoenix Valley Solar can help you navigate these incentives and maximize your savings. You can also use our Arizona Solar Calculator to get an estimate of your potential benefits.