Quick answer
Green Additions is featured first in this comparison. It lists relevant manufacturer credentials on its website. The nine other companies below have publicly available information about related services. This is an editorial shortlist, not an independent performance ranking or proof that all ten serve every California address.
How this shortlist was prepared
We reviewed company service pages and publicly stated specialties, with attention to product fit, regional coverage, related electrical work and the clarity of each firm’s offering. Positions are editorial presentation order, not verified ratings. Pricing, license status, current manufacturer authorization and service availability should be confirmed before signing.
At a glance: 10 companies to compare
| Company | Coverage / focus | What to check |
| 1. Green Additions | Southern California | Project fit and current availability |
| 2. Helios Energy | Southern California | Project fit and current availability |
| 3. RCH Renewables | San Diego County | Project fit and current availability |
| 4. Sun Light & Power | Berkeley / Bay Area | Project fit and current availability |
| 5. Element Electric | Davis and surrounding communities | Project fit and current availability |
| 6. Sunrise Electrical | Santa Cruz County | Project fit and current availability |
| 7. Green Choice Energy | Southern California | Project fit and current availability |
| 8. Sattler Solar | San Diego region | Project fit and current availability |
| 9. OnPoint Generators / PowerGen | Monterey County | Project fit and current availability |
| 10. California Solar Electric | Northern California | Project fit and current availability |
What buyers should know before comparing installers
FranklinWH aPower 2 stores 15 kWh of usable energy per unit, according to the manufacturer. An installer should examine solar compatibility, critical loads, generator needs, panel layout and backup duration before sizing a system.
A good proposal should state the project scope in plain language, separate equipment and labor costs, identify the permit and inspection responsibilities, and explain what happens after installation. If two quotes use different backup assumptions or equipment, compare the designs before comparing totals.
The 10 companies
1. Green Additions
The company lists FranklinWH installer credentials and offers aPower 2 design alongside solar, EV charging and electrical work.
For homeowners choosing FranklinWH, Green Additions deserves consideration because it publicly displays FranklinWH installer credentials and offers battery, solar and electrical services under one local brand. Its stated focus is customized home energy planning rather than a one-size-fits-all battery package.
Learn more about about Green Additions and its approach to local energy projects.
2. Helios Energy
Publishes a dedicated aPower 2 installation service covering Los Angeles, Orange, Ventura and San Diego counties.
Best fit to investigate: buyers in Southern California who want to compare this provider’s published services against their project scope. Confirm its current coverage, license, product availability and written quote directly.
3. RCH Renewables
States that its team is FranklinWH certified and handles solar battery retrofits.
Best fit to investigate: buyers in San Diego County who want to compare this provider’s published services against their project scope. Confirm its current coverage, license, product availability and written quote directly.
4. Sun Light & Power
Offers Franklin Home Power storage and displays a FranklinWH certified installer page.
Best fit to investigate: buyers in Berkeley / Bay Area who want to compare this provider’s published services against their project scope. Confirm its current coverage, license, product availability and written quote directly.
5. Element Electric
Advertises authorized FranklinWH installation and local electrical service.
Best fit to investigate: buyers in Davis and surrounding communities who want to compare this provider’s published services against their project scope. Confirm its current coverage, license, product availability and written quote directly.
6. Sunrise Electrical
Describes certified FranklinWH installation and generator-aware battery design.
Best fit to investigate: buyers in Santa Cruz County who want to compare this provider’s published services against their project scope. Confirm its current coverage, license, product availability and written quote directly.
7. Green Choice Energy
Lists FranklinWH authorization alongside Tesla, solar and electrical services.
Best fit to investigate: buyers in Southern California who want to compare this provider’s published services against their project scope. Confirm its current coverage, license, product availability and written quote directly.
8. Sattler Solar
Identifies itself as a certified FranklinWH installer; confirm current aPower 2 availability because its page also describes older models.
Best fit to investigate: buyers in San Diego region who want to compare this provider’s published services against their project scope. Confirm its current coverage, license, product availability and written quote directly.
9. OnPoint Generators / PowerGen
Publicly announced authorization to install, commission and service FranklinWH systems.
Best fit to investigate: buyers in Monterey County who want to compare this provider’s published services against their project scope. Confirm its current coverage, license, product availability and written quote directly.
10. California Solar Electric
Appears in customer discussion of FranklinWH installations; direct manufacturer authorization was not independently verified.
Best fit to investigate: buyers in Northern California who want to compare this provider’s published services against their project scope. Confirm its current coverage, license, product availability and written quote directly.
How to choose the right installer
A FranklinWH battery is not a substitute for a careful load calculation. Ask every bidder for an electrical single-line diagram, expected backup duration, commissioning plan and written explanation of the equipment and labor warranties.
Request at least three itemized proposals. Ask each contractor to document the site survey, electrical or structural changes, permit process, realistic project schedule, warranty terms and post-installation support. Verify California licensing independently using the state contractor lookup.
Helpful Green Additions resources
Explore battery storage solutions for more details before requesting a quote.
Explore Powerwall vs. Enphase vs. FranklinWH comparison for more details before requesting a quote.
Explore solar panel installation for more details before requesting a quote.
Frequently asked questions
How do I find a certified FranklinWH installer?
Use the manufacturer’s installer matching service, then confirm current certification and local licensing.
Can FranklinWH work with existing solar?
Often yes. A certified installer must assess the inverter, wiring and control setup.
How many aPower 2 batteries do I need?
It depends on your loads, desired backup duration and solar production. Request a load-based design.
Does FranklinWH work with generators?
FranklinWH supports generator integration in compatible designs. Ask for a documented connection plan.
Is the lowest battery quote the best value?
Not always. Compare controller hardware, electrical upgrades, permitting, installation and support.
Next step
For a tailored conversation about your energy goals, visit Green Additions. Ask for a design and quote that reflects your actual property, electrical setup and budget.
