Updated: Jun 04, 2026
Location and Projects
Address
13113 JOHN BAUER AVE, Grass Valley, CA, 95945
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Empire Energy Construction
Empire Energy Inc operates out of Grass Valley, California, focusing on energy solutions for both residential and commercial properties. Serving clients throughout Nevada County and surrounding areas, the company specializes in solar panel installation, home battery systems, and energy efficiency upgrades. With six years of industry experience, Empire Energy Inc manages a range of projects involving photovoltaic solar arrays, backup power systems, and energy audits aimed at reducing utility costs and promoting sustainable energy practices. The company's portfolio includes work on single-family homes, multi-unit residences, and local businesses seeking to adopt clean energy technologies. Empire Energy Inc emphasizes the use of high-quality panels and current technologies to customize each installation, ensuring that each system aligns with client energy demands and site conditions.
Empire Energy Inc Services
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Empire Energy Inc Contact Information
Phone Number: (530) 272-5462
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Address: 13113 JOHN BAUER AVE, Grass Valley, CA 95945
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Empire Energy Inc Grass Valley
Quality
103
90th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Empire Energy Inc has a BuildZoom score of 103, which places them above 90% of 336,931 contractors in California.
Activity
|
2 projects
|
2025 |
|
1 project
|
2024 |
|
1 project
|
2023 |
Our building permit records indicate that Empire Energy Inc has worked on at least
4.0 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
|
3 projects
|
Home Additions |
Analyzing permits over the last 4 years shows that Empire Energy Inc mostly works on
home addition
projects.
Pricing
|
1 project
|
$5k-$20k |
|
2 projects
|
$20k-$50k |
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.
Empire Energy Inc Reviews
5 out of 5 stars, based on
1
review
-
By John S.July 29, 2020Generator Install$14,000
This is a sample of this contractor's permits. Click here to access their complete permit history.
Residential: full review - additions adu accessory structures pools remodel demolish generators and
2025-11-26
Install of 20 kw kohler generator with corresponding automatic transfer switch elevated stand plumbing running and install of electrical conduit and conductors meetings with gas company needed paperwork. any other documentation needed. * applicable sections to the carbon monoxide affidavit must be filled out by home owner before final inspection. * home owner must make call to gas com... see more
Valuation:
$26,000
Permit #:
BLD25-02456
Status:
complete
Fee:
$344
Permit Type:
Accessory
Building Type:
N/A
Residential: full review - additions adu accessory structures pools remodel demolish generators and
2025-03-13
Install new 26kw kohler stanby generator (n) generator: 26kw kohler (n) ats: 200a kohler ats new trench for electrical from pump house to sub panel ***placer county fire to inspect new lpg line to generator***
Valuation:
$24,500
Permit #:
BLD24-06982
Status:
complete
Fee:
$511
Permit Type:
Accessory
Building Type:
N/A
Residential - with plan check - alteration or addition
2024-08-08
Full install of 14kw kohler generator. including ats (automatic transfer switch) installed near pg&e main panel. installing 60 of steel pipe from natural gas main to generator location. generator will be placed on precast slab
Valuation:
$16,500
Permit #:
24BLD-0405
Status:
final
Fee:
$409
Permit Type:
Generator
Building Type:
N/A
Residential: full review - additions accessory structures pools demolish generators and other
2022-08-11
(1) 14 kw generator: kohler 14rca (1) 100a ats: kohler rxt (with internal load center) (e) 200a msp w 200a mcb & 100a ats breaker fuel source: (e) lpg tank trenching: 55 ****************placer hills for inspection*********
Valuation:
$18,700
Permit #:
BLD22-01382
Status:
complete
Fee:
$336
Permit Type:
Accessory
Building Type:
N/A
Residential: full review - additions accessory structures pools demolish generators and other
2021-05-21
Install generator 24kw liquid cooled 1800 rpm set off main electrical service with transfer switch e-200a msp n-200a ats kohler rxt jfnco200a n-42ct 200a subpanel any new propane lines to be inspected by placer county fire p.d
Valuation:
$30,000
Permit #:
BLD21-01818
Status:
complete
Fee:
$281
Permit Type:
Accessory
Building Type:
N/A
Residential - with plan check - alteration or addition
2020-05-29
Install 20kw coded generator south of house near electric service. install automatic transfer switch to right
Valuation:
$12,043
Permit #:
19BLD-0542
Status:
final
Fee:
$220
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
B23-2611
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Residential generator: install 14kw natural gas powered automatic home standby kohler generator and automatic transfer switch on concrete pad w a 49’ electrical line and 25’ gas line. the generator will be bolted down to a kolher engineered prefabricated slab. gas: from meter travels through 1 1/4 steel gas pipe for 2 and enters crawlspace. the gas will continue through the crawlspace... see more
Valuation:
$14,653
Permit #:
20BLD-0187
Status:
final
Fee:
$381
Permit Type:
Electrical - 2 in...
Building Type:
N/A
Residential: full review - additions adu accessory structures pools demolish generators and other
2022-03-14
Install new 20kw backup generator and 100a transfer switch msp: (e) 200a w/100a ats breaker ats: (n) 100a ats w/relocted loads (rdt-cfnc-0100b) generator: (n) 20kw kohler (#20reca)
Valuation:
$15,900
Permit #:
BLD21-06992
Status:
complete
Fee:
$285
Permit Type:
Accessory
Building Type:
N/A
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158
BZ Score
-
Avg Project
-
Projects
152
BZ Score
$120K
Avg Project
-
Projects
156
BZ Score
$30.2K
Avg Project
-
Projects
Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Empire Energy Inc License info
Verified License
| License # | 1052127 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Corporation |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Empire Energy Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
103
BuildZoom Score
Bonded
| Bonded Agent | Wesco Insurance Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
9
Permits
- Building permit records show that Empire Energy Inc has worked on 9 permitted projects.
Empire Energy Inc Employees
BV
Birken Thomas Vogt
Ceo / President
JS
John Westley Sifford
Rmo
Empire Energy is a growing presence centered in Grass Valley but striking out to the Loomis-Roseville area, Colfax, Penn Valley, Nevada City, Loma Rica, North San Juan and the high Sierra. The senior owner, Birken Vogt, grew up with an understanding of mechanics, has serviced Generators and repaired every extent of breakdown that a generator can know; he has over ten years of experience in just this area. Over the years with Birken's experience leading the way and with the construction savvy that his business partner brings to the table; Empire Energy certainly contends as an industry leader in the area. Empire Energy's bread and butter is fully off-grid power systems and new installations of standby generators. They take care of the warranty work as needed, the routine service and long-term maintenance of your generator. Years of experience and a high standard makes Empire Energy Inc a sure professional in your neighborhood.