Mission Hills, Los Angeles, CA · May – July 2026 · LADWP / LADBS
Eighteen modules, a subpanel connection and sixty days from permit to PTO
Eighteen 410 W modules with a microinverter under each, connected at the house's subpanel. The permit was issued on 1 June 2026, and LADWP set the net meter and authorized the system on 31 July.
This Mission Hills system is 7.38 kW DC: eighteen Mission Solar MSE410HT0B 410 W modules, each with an Enphase IQ8A microinverter, on a composition shingle roof, connected at the house's subpanel. Cali Energy designed it, took the permit, which LADBS issued on 1 June 2026, and handled the LADWP interconnection. The final was signed off on 2 July, and LADWP set the net meter and authorized permission to operate on 31 July, sixty days after the permit.
At a glance
- System
- 7.38 kW DC
- Modules
- 18 × Mission Solar MSE410HT0B, 410 W
- Microinverters
- Enphase IQ8A, one per module
- Connection
- At the subpanel, not the main panel
- LADBS permit issued
- 1 June 2026
- Final signed off
- 2 July 2026
- LADWP permission to operate
- 31 July 2026
The story
The design settled at eighteen modules in mid-May 2026: Mission Solar MSE410HT0B panels rated 410 W, 7.38 kW DC, each with an Enphase IQ8A microinverter under it. The plans split them into three arrays, eight, five and five, with the microinverter branches following the same split.
The solar connects at the house's subpanel rather than its main panel. While the plans were drawn, the panel ratings on them were corrected to match what is on the wall: a 200-amp main panel with a 200-amp main breaker, and a subpanel rated 200/225. Where the solar breaker can go is the question that decides it; the background is in solar without a panel upgrade.
The fire-access clearances above two of the arrays were set in the plans, one at three feet and one at eighteen inches. On 1 June, at the LADBS counter, plan check asked for the clearances on the layout to be adjusted. The corrected plans came back within the hour, and the permit was issued that day.
The utility side ran in parallel. Cali Energy submitted the interconnection application to LADWP on 26 May, and LADWP completed its site evaluation two days later. On 2 July the final inspection was signed off on the permit card, and on 3 July LADBS sent the electrical service release to LADWP.
On 6 July LADWP confirmed the release and approved the interconnection, and on 31 July its crew set the new net meter and LADWP authorized permission to operate. From permit to PTO, sixty days. Those steps follow the usual permit-to-PTO timeline in Los Angeles, and the net meter brings the house under LADWP net metering.
How it ran
| Mid-May 2026 | Design settled at 18 modules, three arrays |
|---|---|
| 19–22 May 2026 | Plans drawn; clearances and panel ratings corrected |
| 26 May 2026 | LADWP interconnection application submitted |
| 28 May 2026 | LADWP site evaluation complete |
| 1 June 2026 | Layout correction at the counter; LADBS permit issued |
| 2 July 2026 | Final inspection signed off |
| 3 July 2026 | LADBS sends the service release to LADWP |
| 31 July 2026 | Net meter set; LADWP authorizes PTO |
Permit to PTO: sixty days, with the LADWP review running alongside.
What we did
- Designed the system at eighteen modules in three arrays.
- Had the panel ratings and clearances on the plans corrected before submittal.
- Took the permit at the LADBS counter, with the layout corrected the same hour.
- Submitted the LADWP interconnection application.
- Sealed the mount holes and installed the modules and microinverters.
- Requested the final inspection.
System specifications
| Modules | 18 × Mission Solar MSE410HT0B, 410 W |
|---|---|
| System size | 7.38 kW DC |
| Microinverters | Enphase IQ8A, one per module |
| Layout | Three arrays: 8, 5 and 5 modules |
| Connection | Subpanel; main panel 200 A with a 200 A main |
| Roof | Composition shingle, flashed mounts sealed at each hole |
| Utility / AHJ | LADWP / LADBS |
Is your project like this one?
- Your house has a subpanel and you wonder where solar connects.
- You are planning a system of around seven kilowatts.
- You want to know how long permit to PTO takes in Los Angeles.
- You want a microinverter under every module.
- Your roof has several faces and the array will be split.
Cali Energy in Mission Hills
Mission Hills is a neighborhood inside the City of Los Angeles: permits run through LADBS, interconnection through LADWP.
Mission Hills is inside the City of Los Angeles, so the permit comes from LADBS and the grid connection from LADWP. The two run side by side: LADWP reviews the interconnection application while the permit and the work go through the city.
- License and classifications: CSLB #1032379
- Official reference for this process: LADWP interconnection requirements
- Official reference for this process: Enphase — installer documentation
Frequently asked questions
How long did this Mission Hills system take from permit to PTO?
Sixty days. LADBS issued the permit on 1 June 2026, the final inspection was signed off on 2 July, LADBS sent the service release to LADWP on 3 July, and on 31 July LADWP set the new net meter and authorized permission to operate. The interconnection application had gone to LADWP on 26 May, so its review ran alongside the permit.
Why does this system connect at the subpanel?
Because that is where the plans put the solar breaker. The main panel is 200 amps with a 200-amp main breaker, and the subpanel is rated 200/225. Whether a given panel can take a solar breaker is worked out from its ratings in the design, and it is a decision for the designer and a licensed electrician.
What was corrected at the LADBS counter?
The fire-access clearances on the layout. Plan check asked for them to be adjusted on 1 June 2026, the corrected plans came back within the hour, and the permit was issued that day.
What equipment is in this Mission Hills system?
Eighteen Mission Solar MSE410HT0B modules rated 410 W, 7.38 kW DC, each with an Enphase IQ8A microinverter, in three arrays of eight, five and five, with an Enphase combiner on the wall.
Does Cali Energy handle LADWP interconnection in Mission Hills?
Yes. On this Mission Hills project Cali Energy designed the system, took the permit from LADBS, submitted the interconnection application to LADWP and saw it through to permission to operate. License CSLB #1032379.
What this would look like on your roof
Planning solar in Mission Hills? Tell us your utility, your roof and what your bill looks like now, and we will model what a system like this would do on your house before you commit to anything.
Or call +1 (323) 844-7777 · Cali Energy, Northridge · CSLB #1032379 (B, C-10, C-39) — design, permits, install and electrical under one licensed contractor.
Related
Updated October 2026.