The adoption rate of batteries has increased by more than 300% since Q1 of 2020, with attachment rates increasing from 6% to over 25%. The numbers make it clear that batteries are dominating the market and show no sign of slowing down. One in every four homes that go solar will install a battery, and data suggests that even more will install batteries later.
In 2022, storage retrofits represented 23% of all new storage installs. Retrofitting storage onto existing solar systems is the most common source of return revenue for solar installers and the market is ripe for continued growth. Data from FranklinWh suggests that 66% of surveyed consumers would invest in energy storage systems if they qualified for government incentives.
As of 2024, roughly 4.2 million American homes are equipped with solar panels. Data suggests that just over 3 million of those don’t have batteries, and 2 million of those would be interested in investing in one. The opportunity is here for the taking.
It was with this data and knowledge that Solar Insure created our game-changing retrofit and standalone battery warranty, SI-30 Battery.
Table of Contents
Unlocking Energy Storage Add-Ons

SI-30 Battery warranty is a unique warranty designed to provide unparalleled protection for homeowners looking to add battery storage to their homes or existing solar projects. Battery add-ons and retrofits are among the most common return business in the solar industry. Offering an SI-30 Battery warranty allows solar providers to re-engage their customer base, open up new sources of revenue, and offer a solution that addresses homeowners rising concerns over energy resilience.
SI-30 Battery warranty protects batteries and labor costs for 30 years. It also offers one battery replacement once the overall capacity degrades below 50% after the manufacturer warranty period.
Between SI-30 Battery and SI-30 Total, solar + storage customers get long-term battery protection whether they install the battery on the front end or later down the line.
Key Features

- Parts & Labor
- Coverage includes diagnosing and remedying issues related to the battery system.
- Battery Replacement
- Diagnostics, repair, and one battery replacement between years 11-30 when below 50% capacity. The new battery comes with a new manufacturer warranty, continuing coverage long-term.
- Warranty Transfer
- The warranty is assigned to the address and seamlessly transfers to the new homeowners at no additional cost.
- Zero Hidden Fees
- Coverage includes a $0 deductible, $0 subscription, and $0 onboarding fees.
- Manufacturer Default Protection
- Manufacturer Default Protection – Solar manufacturer warranty default is backed by insurance coverage provided by an A.M Best A+ Rated insurance carrier.
- Integrated Battery/Inverter Coverage
- Coverage includes new technologies that integrate inverters and batteries into one unit.
True Value for Homeowners
Homeowners receiving SI-30 Battery as part of their storage retrofit double or even triple the warranty on their addition and fill in gaps left by manufacturer warranties. With labor cost coverage for qualified claims, homeowners get added peace of mind that their battery won’t cause surprise maintenance costs down the road.
One of the biggest areas of skepticism for homeowners is technology reliability. Prospective customers worry that the technology has shorter warranties than the rest of their equipment and would be expensive to replace later. SI-30 Battery removes this fear by offering one battery replacement between years 11 and 30 once the overall capacity degrades below 50%.
Thanks to battery replacement, a battery retrofit protected by SI-30 Battery provides more than 40% more energy to a home over its lifetime compared to a battery without SI-30 Battery.
Why Should Providers Offer SI-30 Battery?
Offering unmatched value for customers and increasing close rates aside, SI-30 Battery solves key issues facing Certified Solar Providers businesses:
- Reengaging Existing Customer Base: Existing customers already trust your quality, so seize the opportunity to further your relationship by offering a valuable upgrade with long-term protection.
- Stagnant customer acquisition: SI-30 Battery helps providers stand out in a crowded market and attract new customers by offering long-term security and sustainability whether they want it now or later.
- Rising customer concerns over energy resilience: The SI-30 Battery warranty ensures that the customer’s energy security investment will be protected for decades and mitigates concerns over lost capacity.
- Challenges monetizing energy storage demand: Offering the SI-30 Battery warranty allows solar providers to outshine TPO providers by offering longer-term, more comprehensive warranties and the freedom for customers to choose when they want energy storage.
- Close Value-Based Sales: Pivot the conversation from price to value by offering a solution that fills in the gaps left by other warranties and installers.
The Energy Storage Add-On Market Just Changed
Adapting to a shifting market can be challenging, but SI-30 Battery offers Solar Insure Certified Providers the opportunity to deliver decades’ worth of value to energy storage customers.
Learn more about SI-30 Battery at its dedicated webpage: https://www.solarinsure.com/si30battery
Learn more about becoming a Solar Insure Certified Provider: https://www.solarinsure.com/solar-warranty-installer-signup