Updated: Mar 27, 2026
Location and Projects
Address
1585 N LAKE AVE, Pasadena, CA, 91104
Use our bidding system to
request a quote
Altadena Energy & Solar Inc
Altadena Energy & Solar Inc, 1585 N Lake Ave, Pasadena, CA (Employees: Hans William Rosenberger and Joy Yuenyu Lam) holds a Solar, Electrical license and 1 other license according to the California license board.
Their BuildZoom score of 110 ranks in the top 4% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Altadena Energy & Solar Inc, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Altadena Energy & Solar Inc Contact Information
Phone Number: (818) 794-2469
Edit
Address: 1585 N LAKE AVE, Pasadena, CA 91104
Edit
Do you work for this business? Unlock this free profile to update company info and see who's viewing your profile.
Altadena Energy & Solar Inc Pasadena
Quality
110
96th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Altadena Energy & Solar Inc has a BuildZoom score of 110, which places them above 96% of 336,931 contractors in California.
Activity
|
19 projects
|
2025 |
|
14 projects
|
2024 |
|
15 projects
|
2023 |
Our building permit records indicate that Altadena Energy & Solar Inc has worked on at least
48.0 projects over the past 3 years.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
Experience
|
48 projects
|
Solar installations |
Analyzing permits over the last 4 years shows that Altadena Energy & Solar Inc mostly works on
solar installation
projects.
Pricing
|
2 projects
|
$5k-$20k |
|
8 projects
|
$20k-$50k |
The typical size of their permits is approximately $28,000. This graph shows the distribution of these job values.
Pro tip:
For more details about their pricing, check out their recent activity to see how much they have charged for different types of work.
Building Permits by Altadena Energy & Solar Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
[e-plan] install solar photovoltaic system on new adu (1533 n hazelwood). system comprised of (7) 460w modules with (7) microinverters and solar subpanel. system size = 3.22 kw dc 2.66 kw inverter air conditioning rated
Valuation:
N/A
Permit #:
25041-10000-27090
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Roof mounted 6.9 kw solar - install (15) 460w modules and (15) microinverters on roof of single family home. install (1) 10kwh enphase battery (1) 200a meter collar and (1) combiner box
Valuation:
$28,000
Permit #:
SPV25-0055
Status:
issued
Fee:
$490
Permit Type:
N/A
Building Type:
N/A
Install solar photovoltaic and ess system on roof of sfh. system comprised of: (15) 460w modules (15) microinverters (1) 10kwh battery (1) 200a meter collar and (1) combiner box. system size = 6.9kw dc
Valuation:
N/A
Permit #:
SPV25-0054
Status:
triage
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
[eplan] pv1 install solar photovoltaic system for new adu construction at 2353 n hidalgo. system is comprised of (5) 410w modules with microinverters and balance of system. system size = 2.05kw dc nameplate and 1.625 kw air conditioning inverter output rated
Valuation:
N/A
Permit #:
24041-10000-45576
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
[eplan][pv1] install 10.66kwdc/13.5kwac photovoltaic system with (26) 410w modules racking system microgrid interconnection device (2) 60a air conditioning disconnects (1) 13.5 kwh air conditioning coupled battery energy storage unit and (1) 125a backup loads subpanel
Valuation:
N/A
Permit #:
24041-10000-35630
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
New roof mounted solar system pv2 on an apartment building. system comprised of (12) 405w modules with (12) microinverters racking system and (1) 125a solar subpanel that is conected to an existing 1 200amp msp. system size = 4.860 kw dc nameplate and 4.188 kw air conditioning inverter rated
Valuation:
N/A
Permit #:
24041-10000-15229
Status:
issued
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
E-plan 10.010 kwdc photovoltaic system on single family home. system comprised of (26) 385w photovoltaic modules with (26) microinverters racking system (1) microgrid interconnection device (1) solar combiner subpanel (1) 225a span backup subpanel and (2) battery energy storage modules (5kwh each)
Valuation:
N/A
Permit #:
24041-10000-06380
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
[eplan] pv1+ess. install solar photovoltaic and battery energy storage microgrid on house and adu. system comprised of (72) 410w solar modules (72) microinverters racking system (1) microgrid interconnection device (3) solar combiner subpanels (3) air conditioning disconnects (8) 5kwh battery energy storage units and (1) 125a critical load backup subpanels. system size = 25.128 kw air... see more
Valuation:
N/A
Permit #:
24041-10000-01010
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Eplan; install solar photovoltaic system on an adu roof. system comprised of (5) 410w modules (5) microinverters a system monitor and air conditioning disconnect. system size = 2.05kw dc nameplate and 1.625kw air conditioning inverter output rated
Valuation:
N/A
Permit #:
24041-10000-23477
Status:
plancheck
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
[eplan] install roof mounted solar photovoltaic & bess system at single family home. (25) modules/microinverters (4) 5kwh batteries units and associated equipment. photovoltaic system size is 11.5kw dc 9.5kw air conditioning. 20 kwh ess
Valuation:
N/A
Permit #:
25041-10000-30797
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
[eplan] new solar pv1 & bess system with (19) modules/microinverters (1) combiner box (1) 150a sub panel (1) iq system controller and (1) 10.5kwh battery all connected to existing 200a msp. system size is 7.6 kw dc 6.6kw air conditioning
Valuation:
N/A
Permit #:
23041-10000-31605
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Expedite - install solar photovoltaic & bess system on single family home. system comprised of (25) 370w photovoltaic modules with microinverters racking system (1) 60a air conditioning disconnect (1) 125a solar subpanel (1) 10.5 kwh energy storage module (1) microgrid interconnection device (1) 125a backup loads subpanel. system size = 7.25kw air conditioning inverter rated or 9.25 k... see more
Valuation:
N/A
Permit #:
22041-10001-44945
Status:
approved
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Expedited per applicant request [e-plan] install solar photovoltaic system on roof of single family home. system comprised of (58) 370w modules with microinverters racking system (1) 125a solar subpanel monitor and (1) 100a fused air conditioning disconnect. system size is 21.46kwdc 16.82 kw air conditioning
Valuation:
N/A
Permit #:
22041-10001-45801
Status:
approved
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Pv1. install solar photovoltaic & bess system on single family home. system comprised of (25) 370w photovoltaic modules with microinverters racking system (1) 60a air conditioning disconnect (1) 125a solar subpanel (1) 10.5 kwh energy storage module (1) microgrid interconnection device (1) 125a backup loads subpanel. system size = 7.25kw air conditioning inverter rated or 9.25 kw dc n... see more
Valuation:
N/A
Permit #:
22041-10000-44945
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Permit fee is $0.00 due to ab1414 [e-plan] installing a solar photovoltaic system on roof of single family home. system comprised of (58) 370w modules with microinverters racking system (1) 125a solar subpanel monitor and (1) 100a fused air conditioning disconnect. system size is 21.46kwdc 16.82 kw air conditioning
Valuation:
N/A
Permit #:
22041-10000-45801
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
[eplan]pv1 roof mounted solar system using microinverters and interconnected to a battery energy storage system air conditioning coupled. system comprised of (8) 435w modules with (8) microinverters racking system (1) 125a solar subpanel (1) 200a microgrid interconnection device (1) 125a critical loads subpanel (1) solar 30a air conditioning disconnect and (1) 10.5 kwh battery energy ... see more
Valuation:
N/A
Permit #:
21141-10000-26374
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
[e-plan] install roof mounted solar photovoltaic and battery energy storage system on single family house. solar is comprised of (39) 380w modules capacity = 14.82kw dc. (39) 290w microinverters behind each panel inverter capacity = 11.31kw air conditioning. battery energy storage system comprised of (1) 10.5 kwh lithium iron phosphate energy storage system. (1) 125a photovoltaic subp... see more
Valuation:
N/A
Permit #:
21041-10000-21839
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
**expedited per applicant request** [eplan] new rooftop mounted pv1 installation with (15) modules (15) micro-inverters (1) combiner box and (1) ess device all interconnected to an existing 125a msp. system size is: 6.0kwdc 5.235kwac
Valuation:
N/A
Permit #:
23041-10001-28656
Status:
approved
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
(eplan) pv1 pc for installation of roof mounted solar panels. photovoltaic system includes 9 modules with 9 microinverters and 1 combiner box connected to existing main service panel. system size is 3.6kw dc/3.29kw air conditioning
Valuation:
N/A
Permit #:
23041-10000-19083
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Eplan: installation of a 7kw dc 5kw air conditioning roofmounted system with (20) moudles optimizers (1) load center and (1) inverter along with an existing photovoltaic system interconnecting through the main service panel
Valuation:
N/A
Permit #:
22041-10000-45777
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Similar Contractors See more
143
BZ Score
$12.6K
Avg Project
-
Projects
164
BZ Score
$12K
Avg Project
-
Projects
License # 998940
Sherman Oaks, CA
152
BZ Score
$7.5K
Avg Project
-
Projects
Altadena Energy & Solar Inc Reviews
BuildZoom hasn't received any reviews for Altadena Energy & Solar Inc. Click here to be alerted when reviews are posted about them.
Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Altadena Energy & Solar Inc License info
Verified License
| License # | 979146 |
| Status | Active |
| State | California |
| Type | Solar, Electrical |
| Business Type | Corporation |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for Altadena Energy & Solar Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 138376 |
| Status | Inactive |
| State | California |
| Type | Electrical |
| Business Type | Corporation |
- According to the California Contractors State License Board, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.
Check this license's status for Altadena Energy & Solar Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
110
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
236
Permits
- Building permit records show that Altadena Energy & Solar Inc has worked on 236 permitted projects.
Altadena Energy & Solar Inc Employees
HR
Hans William Rosenberger
Rmo / Ceo / Pres
JL
Joy Yuenyu Lam
Officer