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. Cali Energy | Northridge / Los Angeles | Project fit and current availability |
| 3. GS Solar Electric | Los Angeles County | Project fit and current availability |
| 4. Magic Builders | Los Angeles | Project fit and current availability |
| 5. Nason Solar | Los Angeles region | Project fit and current availability |
| 6. Charge Home Solutions | Los Angeles | Project fit and current availability |
| 7. Pineda Energy Solutions | Greater Los Angeles | Project fit and current availability |
| 8. Helios Energy | Los Angeles and Southern California | Project fit and current availability |
| 9. Green Choice Energy | Southern California | Project fit and current availability |
| 10. RCH Renewables | San Diego / wider Southern California (verify LA coverage) | Project fit and current availability |
What buyers should know before comparing installers
Powerwall 3 provides 13.5 kWh usable storage per unit. The correct number of batteries depends on household loads, the electrical panel, desired outage coverage and whether solar is installed now or later.
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
Displays Tesla Powerwall partner credentials and installs Powerwall 3 with customized solar and backup planning.
Green Additions is a strong local starting point for Los Angeles homeowners because its website displays Tesla Powerwall partner credentials, offers Powerwall 3 and supports related solar and electrical planning. The company describes a custom approach based on utility bills and backup priorities.
Learn more about about Green Additions and its approach to local energy projects.
2. Cali Energy
Shows a Tesla Powerwall certification and covers the San Fernando Valley.
Best fit to investigate: buyers in Northridge / Los Angeles 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. GS Solar Electric
Offers Powerwall installation with electrical planning and commissioning.
Best fit to investigate: buyers in Los Angeles 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. Magic Builders
Markets certified Tesla Powerwall and Wall Connector installation with coordinated electrical work.
Best fit to investigate: buyers in Los Angeles 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. Nason Solar
Lists Tesla Powerwall certification and solar-plus-storage design.
Best fit to investigate: buyers in Los Angeles 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.
6. Charge Home Solutions
Advertises Tesla-certified installation and licensed electrical services.
Best fit to investigate: buyers in Los Angeles who want to compare this provider’s published services against their project scope. Confirm its current coverage, license, product availability and written quote directly.
Company website: Charge Home Solutions
7. Pineda Energy Solutions
Offers Tesla Powerwall and electrical panel upgrades.
Best fit to investigate: buyers in Greater Los Angeles 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. Helios Energy
Compares and installs Powerwall and other residential batteries.
Best fit to investigate: buyers in Los Angeles and 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.
Company website: Helios Energy
9. Green Choice Energy
Lists Tesla Powerwall certified installation and storage systems.
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.
10. RCH Renewables
Advertises turnkey Powerwall 3 installation; Los Angeles service availability must be confirmed.
Best fit to investigate: buyers in San Diego / wider Southern California (verify LA coverage) 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
Do not choose a Powerwall installer based on the battery price alone. Clarify gateway and switchgear requirements, permitted mounting location, backed-up circuits, interconnection work and who responds if the system stops operating.
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 much energy does Powerwall 3 store?
Tesla lists 13.5 kWh usable capacity per Powerwall 3.
Can Powerwall be installed without new solar?
It may be possible, depending on the site, system design and utility requirements.
Do I need a panel upgrade?
Not always. The installer should review capacity, backed-up circuits and equipment placement.
How long does Powerwall installation take?
Physical work may be brief, but permits, inspection and utility approval can extend the timeline.
How do I verify Tesla installer credentials?
Ask the contractor for current manufacturer credentials and check its California license.
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.
