Upgrade Your Solar System: Retrofit for More Power and Savings
Add battery backup, increase efficiency, and modernize your system without starting over
Maximize Your Solar Investment with a Retrofit
What Is a Solar Retrofit?
A solar retrofit upgrades your current solar system to meet today’s standards. Whether you want to add battery storage, increase your capacity, or replace outdated inverters, retrofitting gives you more control and savings without reinstalling everything. SolarTech specializes in retrofitting solar systems across Southern California, helping homeowners get more out of their investment.
By integrating advanced inverter replacements, battery storage installations, panel expansions, and more, we can significantly enhance your system’s performance.
With a retrofit, you can see up to 28% more energy output, enjoy over $800 a year in added energy savings, and gain reliable protection from power outages with battery storage.
Plus, California homeowners may qualify for valuable rebates on battery retrofits, making now the perfect time to upgrade.
If your solar system is over 5 years old, a solar retrofit can:
✅Improve energy efficiency
✅Enable battery storage (e.g., Tesla Powerwall or Enphase Battery)
✅Expand panel capacity for EVs, pool heaters, or larger homes
✅Replace outdated inverters with modern smart inverters
✅Improve monitoring and energy tracking
Our Solar Retrofit Services
Add a Battery To Your System
Store excess energy for greater savings & stay connected during blackouts.
Solar Panel Expansion
Increase your solar array to match your growing energy needs with a solar panel retrofit.
Inverter Replacement & Upgrades
Upgrade to Enphase, SolarEdge, SMA, or Fronius systems for smarter, more efficient energy conversion
Monitoring System Improvements
Get an enhanced visibility of your system with Enphase Enlighten, Tesla App, or SolarEdge Monitoring.
Energy Storage Systems
Why Homeowners Trust SolarTech for Retrofits
Free System Health Check
Identify upgrade opportunities without pressure
Certified Experts
SolarTech is NABCEP-certified and a Tesla & Enphase-certified installer.
Boost Your Energy Savings
Clients have seen up to 28% improvement in performance
20+ Years Serving Thousands
With more than 600 5-star reviews on Google, Yelp & BBB
GET STARTED TODAY!
Ready to Retrofit Your Solar System?
Let us inspect your current system and show you what’s possible — with no obligation.
- Up to 28% more energy output
- Over $800/year in additional energy savings
- Protection from power outages with battery storage
- Eligibility for rebates on battery retrofits in California
Book Your Free Solar Retrofit Assessment
Frequently Asked
Questions
Contact SolarTech Support
Phone
(619) 743 9193
A solar retrofit is the process of adding solar technology to an existing building or electrical system without completely replacing your current infrastructure. This can include installing new solar panels, upgrading inverters, or integrating battery storage into your current setup. Solar retrofits allow property owners to enjoy the benefits of renewable energy, improve energy efficiency, and reduce electricity bills without the higher cost of a full system replacement.
A solar panel retrofit focuses on upgrading or enhancing parts of your existing solar system rather than tearing everything out and starting over. For example:
- You might add more panels to increase capacity.
- Replace an outdated inverter with a modern, more efficient model.
- Integrate battery storage or monitoring systems.
In contrast, a full replacement means removing your entire solar setup and installing a brand-new system. Retrofits are generally faster, less expensive, and less disruptive while still providing significant performance improvements.
The cost of a solar retrofit depends on several factors, including:
- The size of your existing system
- The number of panels being added or upgraded
- Inverter or battery upgrades
- Labor and permitting fees in your area
On average, a solar retrofit can range from $3,000 to $12,000, which is usually 30–50% less expensive than a full system replacement. Many homeowners also qualify for tax incentives and rebates, reducing the net cost further. To get an accurate estimate, it’s best to schedule a free site assessment.
A typical solar retrofit installation takes 1–3 days, depending on the scope of work:
- Simple upgrades (like inverter replacement) can be completed in just a few hours.
- Adding new panels or integrating battery storage may take 2–3 days, including inspection and system testing.
Compared to a full system replacement, retrofits are significantly quicker and often don’t require major electrical work or structural changes.
Absolutely. Thanks to Q.ANTUM’s real-world engineering, Q.TRON panels maintain excellent output during heatwaves, cloudy days, and other less-than-ideal conditions.
