HomeMy WebLinkAboutSP2026-02Narrative Description: Proposed Behind-the-Meter Battery Energy Storage System
Project Location: 4550 State Hwy 360, Grapevine, TX
To City of Grapevine,
This letter is provided to describe the proposed installation of a behind-the-meter Battery
Energy Storage System (BESS) at the subject property, along with its intended use,
operational characteristics.
The proposed installation consists of a prefabricated, non-walk-in outdoor battery cabinet
mounted on a small concrete equipment pad.
The proposed system is designed to store electrical energy sourced directly from the Oncor
Electric Delivery utility grid during periods of lower demand. This stored energy can then be
discharged back to the facility and/or grid during periods of high system demand. By doing
so, the system helps alleviate strain on the electrical grid, contributing to overall grid stability
and supporting demand management efforts within the region.
From a site operations perspective, the BESS will provide several key benefits:
Backup Power Capability:
● In the event of a utility outage, the system is capable of supplying backup power,
allowing the business to continue operating and minimizing downtime. This enhances
the resilience and reliability of the site.
Operational Cost Reduction:
● The system helps lower electricity costs by reducing usage during higher-demand
periods. It can store energy and use it at more optimal times.
● As part of the agreement, the property owner will receive an annual credit on their
electricity bill.
Special Considerations
● The system is non-walk-in & non-occupied, reducing safety and life-safety concerns.
● Equipment is factory-contained and UL-listed, designed for outdoor installation.
● The installation will maintain appropriate setbacks from property lines and structures.
● The system will be screened from public view where required, using fencing
consistent with local ordinances.
● The screening fence will be minimum 8’ tall, wood material, and must remain in place
and be maintained in good repair.
● Emergency access and shutdown procedures will be incorporated into the design in
accordance with applicable fire and electrical codes.
● The installation will not alter existing parking, traffic flow, drainage patterns, or
materially change impervious cover.
● All work will comply with applicable building, fire, and electrical codes, including
relevant standards for energy storage systems.
● Applicable building & electric permits will be obtained prior to construction.
● No changes to existing improvements are planned as part of this scope of work.
Value to the Property
The addition of the BESS significantly enhances the property by:
● Improving energy reliability and resilience
● Reducing operational energy costs
● Supporting grid stability and regional infrastructure
The proposed system is a low-impact, code-compliant infrastructure improvement that
provides both economic and operational benefits to the property while contributing positively
to the broader electrical grid.
Please feel free to reach out with any questions or if additional information is required.
Sincerely,
--
Jason Duthie - Operations Manager
647-860-7007 https://branchenergy.com
SP26-02 – 1st Review 1
Email a PDF of the revised plans by August 4, 2026 at 12:00 p.m. to
emarohnic@grapevinetexas.gov, atriplett@grapveinetexas.gov, and
lflores@grapevinetexas.gov. Verify that all text is legible on an 11”x 17” sheet.
PROJECT DESCRIPTION: SP26-02; request to add a battery energy storage
system and concrete pad to a site with an existing office building
PLANNING SERVICES
Site Plan – Sheet # E-1
• Some of the previously approved improvements are not shown on this plan
(SP12-05). Make sure this plans reflects all existing improvements on the site
such as:
o Show and label the existing carport
o Show and label the location of the existing monument sign
o Revise the parking configurations
• Add Title Block with relevant information (both
pages)
• The proposed location of the battery is labeled as
approximate. This plan will approve the exact
location of the battery, equipment, and screening.
Remove the word “approximate” and ensure that
this is the exact location you’d like to request.
• Label the existing perimeter fence. Include height
and material
Elevations and Data Table
• Put the elevations of the battery on
the page as well. This helps illustrate
the total height of the machinery.
• The proposed side of the site plan
summary data table should reflect the
existing conditions on the site.
Revise.
• The proposed side of the landscape
plan should reflect the existing conditions on the site. Revise.
o There should also be a reduction in landscaping because of the proposed
pad.
SP26-02 JULY 31, 2026
4550 SH 360 BATTERY STORAGE
4550 STATE HIGHWAY 360
LOT 1, BLOCK 1, OFFICES AT GRAPEVINE
360
BATT
BCP INV
FRON
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SWG
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BATT
BCP INV
FRO
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SWG
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Sheet Contents
E-1
CHECKED BY:JR
SHEET:
PROJECT NO.:
SCALE:AS NOTED
DRAWN BY:
DRAWING STATUS DATE
BUILDING PERMIT NO.:
ISSUED FOR PERMIT
EB
Consultant
Stamp
Contractor
Site Plan
SCALE : 1/32" = 1'
SITE MAP1 N
Project
Project For
2700 Post Oak Blvd Galleria
Office Tower 1, Floor 21,
Houston, TX 77056, USA
help@branchenergy.com
214.724.6134
jrivera@riveramep.com
Solar - EV - Telecom - Buildings - Infrastructure
www.riveramep.com
Registered per local engineering practice law, if required.
TBPE Reg. # 12096
BESS LOCATION NOTE:
1.PER NFPA 855 §9.5.2.6.1, OUTDOOR ESS’S ARE REQUIRED TO MAINTAIN A MINIMUM 10 FT
SEPARATION FROM LOT LINES, PUBLIC WAYS, BUILDINGS, COMBUSTIBLES, HAZARDOUS
MATERIALS, AND OTHER EXPOSURE HAZARDS. BASED ON UL 9540A PROPAGATION TESTING
OF THE SYL BATTERY RACK (MODEL SR8K96FE4), WHICH CONFIRMED NO THERMAL
RUNAWAY PROPAGATION BEYOND THE INITIATING MODULE, THE PROPOSED BESS
INSTALLATION QUALIFIES FOR THE EXCEPTION IN NFPA 855 §9.5.2.7 ALLOWING THE
SEPARATION DISTANCE TO BE REDUCED TO 3 FT.
2.A HAZARD MITIGATION ANALYSIS, PER IFC 1207.1.4, IS NOT REQUIRED. THE BATTERY IS
LI-ION TYPE AND EACH MODULE IS SIZED AT 9KWH.
LEGEND
BATT
BCP
BATTERY ENERGY
STORAGE SYSTEM
BATTERY CONTROL PANEL
INV INVERTER
ACD BESS MAIN INTERCONNECTION
DISCONNECT
Offices at Grapevine 360
New BESS at 4550 State Highway
360 Grapevine, TX 76051, USA
Utility: Oncor Electric
AHJ: City of Grapevine
SEE ENLARGE VIEW 2/E-1
(N) APPROXIMATE
LOCATION OF BATTERY
ENERGY STORAGE SYSTEM
04-22-2026
SITE NOTE:
1.EXISTING SITE CONDITIONS AND IMPROVEMENTS ARE PER PREVIOUSLY APPROVED SITE
PLANS. PROPOSED CONSTRUCTION IS LIMITED TO THE ADDITION OF A BATTERY ENERGY
STORAGE SYSTEM (BESS), INCLUDING A CONCRETE EQUIPMENT PAD AND WOOD SCREENING
FENCE. NO CHANGES ARE PROPOSED TO EXISTING SITE CIRCULATION, PARKING,
LANDSCAPING, DRAINAGE PATTERNS, UTILITIES, SCREENING, OR BUILDING STRUCTURES.
(N) BATTERY CONTROL
PANEL
(N) BATTERY ENERGY
STORAGE SYSTEM
(N) ISLANDING
SWITCHGEAR
SCALE : 1/8" = 1'
ENLARGED VIEW2 N
(N) INVERTER
(N) CONCRETE PAD
(N) 8FT TALL MIN.
WOOD FENCE
(CONCEALING BESS)
SWG ISLANDING SWITCHGEAR
42'-3"
40'-10"
4'
3'
3'
3'
5'
1'
SITE PLAN
CITY OF GRAPEVINE
APPROVED
APPROVAL DOES NOT AUTHORIZE
ANY WORK IN CONFLICT WITH
ANY CODES OR ORDINANCES.
PLANNER
DATE
SHEET:OF
DEPARTMENT OF DEVELOPMENT SERVICES
Show existing carport.
Ensure parking reflects
existing conditions on
the site.
Label the
monument sign
Add title block
Label perimeter fence
Sheet Contents
E-1
CHECKED BY:JR
SHEET:
PROJECT NO.:
SCALE:AS NOTED
DRAWN BY:
DRAWING STATUS DATE
BUILDING PERMIT NO.:
ISSUED FOR PERMIT
EB
Consultant
Stamp
Project
Project For
2700 Post Oak Blvd Galleria
Office Tower 1, Floor 21,
Houston, TX 77056, USA
help@branchenergy.com
Contractor
214.724.6134
jrivera@riveramep.com
Solar - EV - Telecom - Buildings - Infrastructure
www.riveramep.com
Registered per local engineering practice law, if required.
TBPE Reg. # 12096
Offices at Grapevine 360
New BESS at 4550 State Highway
360 Grapevine, TX 76051, USA
Utility: Oncor Electric
AHJ: City of Grapevine
Site Plan Summary And
Dimensioned Elevation Screening
FENCE DIMENSION ELEVATION SCREENING1SCALE : NTS
8' HIGH WOOD FENCE
8'
24'-6"
4' WIDE
ROLLING/SLIDING GATE4'
05-10-2026
CITY OF GRAPEVINE
Site and Landscape Plan Data Summary
Tables
SITE PLAN
Site Plan Data Summary Table
Item Required Proposed
General Site data
Zoning (from zoning map) PCD PCD
Land Use (from Zoning Ordinance; include all applicable uses)
Office building
with parking
Office building
with parking
Total Lot Area (square feet and acres)
96,106 SF (2.206
acres)
96,106 SF (2.206
acres)
First Floor-Building Footprint Area (square feet) 20,000 SF 20,000 SF
Total Building Area (square feet) 20,000 SF 20,000 SF
Building Height (feet/# stories) 1 story 1 story
Floor Area Ratio (ratio x.xx.1)
0.21–0.22 FAR
(20,000 / 96,106)
0.21–0.22 FAR
(20,000 / 96,106)
Open Storage (square feet) None None
Residential Units
Building Distance Separation N/A N/A
# of Studios/Efficiencies/Minimum Unit Size N/A N/A
# of 1 Bedrooms/Minimum Unit size N/A N/A
# of 2 Bedrooms/Minimum Unit size N/A N/A
# of 3 Bedrooms/Minimum Unit size N/A N/A
Total Unit Count N/A N/A
Residential Density (Units/Net Acreage*)
Net Acreage = Total acreage minus streets and open space N/A N/A
Parking
Parking Ratio (from Zoning Ordinance) 72 72
Accessible Parking (# of spaces) 4 4
Site and Landscape Plan
Data Summary Tables
Planning Services Department
200 S. Main Street Grapevine, TX 76051
(817) 410-3155
1
LANDSCAPE PLAN
Site and Landscape Plan
Data Summary Tables
Planning Services Department
200 S. Main Street Grapevine, TX 76051
(817) 410-3155
2
Landscape Plan Data Summary Table
Item Required Proposed
Landscape Area
Landscape Perimeter Area (square feet) 19,285 SF 19,285 SF
Interior Landscape Area-Parking Lot Landscaping (square feet) 3,166 SF 3,517 SF
Additional Interior Landscape Area N/A N/A
Other Landscape Area within the lot (square feet) N/A N/A
Total Landscape Area 22,451 SF 22,802 SF
Impervious Area
Building Footprint Area (square feet) 20,000 SF 20,000 SF
Area of Sidewalks, Pavement & other Impervious Flatwork
(square feet) 37,327 SF 37,450 SF
Other Impervious Area N/A N/A
Total Open Space (square feet and percentage) 22,451 SF (23%)
32,802 SF
(40.2%)
Total Impervious Area (square feet and percentage)
57,327 SF
(59.65%)
57,450 SF
(59.8%)
Add the dimensioned battery elevations to this page
The proposed
column should
reflect existing
conditions
There should be a
reduction in
landscaped area
Why is the
landscaping in the
parking lot
changing?
This open space and impervious
should be based on the
requirements of the "PCD"
zoning district
SP26-02 – 1st Review 2
______________________________________________________________
Email a PDF of the revised final plans by August 4, 2026, at 12:00 p.m. to
emarohnic@grapevinetexas.gov, atriplett@grapveinetexas.gov, and
lflores@grapevinetexas.gov. Verify that all text is legible on an 11”x 17” sheet.
Please direct all questions to Erica Marohnic at (8l7) 410-3155 or Lindsay Flores at (817)
410-3154.
SP26-02 – 2nd Review 1
Email a PDF of the revised plans by August 14, 2026 at 12:00 p.m. to
emarohnic@grapevinetexas.gov, atriplett@grapveinetexas.gov, and
lflores@grapevinetexas.gov. Verify that all text is legible on an 11”x 17” sheet.
PROJECT DESCRIPTION: SP2 6 -02; request to add a battery energy storage
system and concrete pad to a site with an existing office building
PLANNING SERVICES
Remove the clouding from all of the revisions
Site Plan – Sheet # E-1
• ADDRESSED Some of the previously approved improvements are not shown on
this plan (SP12-05). Make sure this plans reflects all existing improvements on
the site such as:
o Show and label the existing carport
o Show and label the location of the existing monument sign
o Revise the parking configurations
• PARTIALLY ADDRESSED – Put the title block
closer to the lower right-hand corner of the page
Add Title Block with relevant information (both
pages)
• ADDRESSED The proposed location of the
battery is labeled as approximate. This plan will
approve the exact location of the battery,
equipment, and screening. Remove the word
“approximate” and ensure that this is the exact location you’d like to request.
• ADDRESSED Label the existing perimeter fence. Include height and material
Elevations and Data Table
• ADDRESSED Put the elevations of
the battery on the page as well. This
helps illustrate the total height of the
machinery.
• PARTIALLY ADDRESSED The
proposed side of the site plan
summary data table should reflect the
SP26-02 AUGUST 7, 2026
4550 SH 360 BATTERY STORAGE
4550 STATE HIGHWAY 360
LOT 1, BLOCK 1, OFFICES AT GRAPEVINE
360
SP26-02 – 2nd Review 2
existing conditions on the site. Revise.
• The proposed side of the landscape plan should reflect the existing conditions on
the site. Revise.
o There should also be a reduction in landscaping because of the proposed
pad.
• Please confirm – the previously approved site plan shows a building coverage of
21,230 sq. ft. Please ensure that what is shown in the provided column reflects the
existing conditions on the site.
______________________________________________________________
Email a PDF of the revised final plans by August 14, 2026, at 12:00 p.m. to
emarohnic@grapevinetexas.gov, atriplett@grapveinetexas.gov, and
lflores@grapevinetexas.gov. Verify that all text is legible on an 11”x 17” sheet.
Please direct all questions to Erica Marohnic at (8l7) 410 -3155 or Lindsay Flores at (817)
410-3154.
BATT
BCP INV
FRON
T
SWG
FRON
T
VLLD
BATT
BCP INV
FRO
N
T
SWG
FRO
N
T
VLLD
Sheet Contents
E-1
CHECKED BY:JR
SHEET:
PROJECT NO.:
SCALE:AS NOTED
DRAWN BY:
DRAWING STATUS DATE
BUILDING PERMIT NO.:
ISSUED FOR PERMIT
EB
Consultant
Stamp
Contractor
Site Plan
SCALE : 1/32" = 1'
SITE MAP1 N
Project
Project For
2700 Post Oak Blvd Galleria
Office Tower 1, Floor 21,
Houston, TX 77056, USA
help@branchenergy.com
214.724.6134
jrivera@riveramep.com
Solar - EV - Telecom - Buildings - Infrastructure
www.riveramep.com
Registered per local engineering practice law, if required.
TBPE Reg. # 12096
BESS LOCATION NOTE:
1.PER NFPA 855 §9.5.2.6.1, OUTDOOR ESS’S ARE REQUIRED TO MAINTAIN A MINIMUM 10 FT
SEPARATION FROM LOT LINES, PUBLIC WAYS, BUILDINGS, COMBUSTIBLES, HAZARDOUS
MATERIALS, AND OTHER EXPOSURE HAZARDS. BASED ON UL 9540A PROPAGATION TESTING
OF THE SYL BATTERY RACK (MODEL SR8K96FE4), WHICH CONFIRMED NO THERMAL
RUNAWAY PROPAGATION BEYOND THE INITIATING MODULE, THE PROPOSED BESS
INSTALLATION QUALIFIES FOR THE EXCEPTION IN NFPA 855 §9.5.2.7 ALLOWING THE
SEPARATION DISTANCE TO BE REDUCED TO 3 FT.
2.A HAZARD MITIGATION ANALYSIS, PER IFC 1207.1.4, IS NOT REQUIRED. THE BATTERY IS
LI-ION TYPE AND EACH MODULE IS SIZED AT 9KWH.
LEGEND
BATT
BCP
BATTERY ENERGY
STORAGE SYSTEM
BATTERY CONTROL PANEL
INV INVERTER
ACD BESS MAIN INTERCONNECTION
DISCONNECT
Offices at Grapevine 360
New BESS at 4550 State Highway
360 Grapevine, TX 76051, USA
Utility: Oncor Electric
AHJ: City of Grapevine
SEE ENLARGE VIEW 2/E-1
(N) LOCATION OF BATTERY
ENERGY STORAGE SYSTEM
08-19-2026
SITE NOTE:
1.EXISTING SITE CONDITIONS AND IMPROVEMENTS ARE PER PREVIOUSLY APPROVED SITE
PLANS. PROPOSED CONSTRUCTION IS LIMITED TO THE ADDITION OF A BATTERY ENERGY
STORAGE SYSTEM (BESS), INCLUDING A CONCRETE EQUIPMENT PAD AND WOOD SCREENING
FENCE. NO CHANGES ARE PROPOSED TO EXISTING SITE CIRCULATION, PARKING,
LANDSCAPING, DRAINAGE PATTERNS, UTILITIES, SCREENING, OR BUILDING STRUCTURES.
(N) BATTERY CONTROL
PANEL
(N) BATTERY ENERGY
STORAGE SYSTEM
(N) ISLANDING
SWITCHGEAR
SCALE : 1/8" = 1'
ENLARGED VIEW2 N
(N) INVERTER
(N) CONCRETE PAD
(N) 8FT TALL MIN.
WOOD FENCE
(CONCEALING BESS)
SWG ISLANDING SWITCHGEAR
SITE PLAN
CITY OF GRAPEVINE
APPROVED
APPROVAL DOES NOT AUTHORIZE
ANY WORK IN CONFLICT WITH
ANY CODES OR ORDINANCES.
PLANNER
DATE
SHEET:OF
DEPARTMENT OF DEVELOPMENT SERVICES
41'-1"
46'-10"
3'
3'
3'
5'
(N) BESS VISIBLE
LOCKABLE LABELED
DISCONNECT
24'-6"
12'-9"
(E) MONUMENT SIGN
(E) CARPORT
(E) 6' TALL DOUBLE
SIDED WOOD FENCE
(TYPICAL)
SITE PLAN / BATTERY ENERGY
STORAGE SYSTEM
FOR
ACROPOLIS INC
LOT 1, BLOCK 1, OFFICES AT GRAPEVINE
AB 1863 TRACT 2B
CITY OF GRAPEVINE, TARRANT COUNTY, TEXAS
312.4 SQ. FT.
ZONE: PCD - COMMERCE-PLANNED, PROPOSED
ADDITION OF BATTERY ENERGY STORAGE SYSTEM
DATE OF SUBMISSION: JULY 28, 2026
PARKING PROVIDED:
76 SPACES (INCLUDES 4 ACCESSIBLE)
FINISH GRADE
SET BACK AREA
FINISH GRADE FINISH GRADE
Sheet Contents
E-2
CHECKED BY:JR
SHEET:
PROJECT NO.:
SCALE:AS NOTED
DRAWN BY:
DRAWING STATUS DATE
BUILDING PERMIT NO.:
ISSUED FOR PERMIT
EB
Consultant
Stamp
Project
Project For
2700 Post Oak Blvd Galleria
Office Tower 1, Floor 21,
Houston, TX 77056, USA
help@branchenergy.com
Contractor
214.724.6134
jrivera@riveramep.com
Solar - EV - Telecom - Buildings - Infrastructure
www.riveramep.com
Registered per local engineering practice law, if required.
TBPE Reg. # 12096
Offices at Grapevine 360
New BESS at 4550 State Highway
360 Grapevine, TX 76051, USA
Utility: Oncor Electric
AHJ: City of Grapevine
Site Plan Summary And
Dimensioned Elevation Screening
FENCE DIMENSION ELEVATION SCREENING1SCALE : NTS
8' HIGH WOOD FENCE
8'
24'-6"
4' WIDE ROLLING/SLIDING GATE
4'
BESS EQUIPMENT FRONT VIEW2SCALE : NTS
SCALE : NTS
BESS EQUIPMENT TOP VIEW3
BATTERY CONTROL PANEL
INVERTER
BATTERY ENERGY STORAGE SYSTEM
ISLANDING SWITCHGEAR
BESS VISIBLE LOCKABLE LABELED
DISCONNECT
1'-8"
6'
8'-2"
5'-6"
1"1"
6'-1"
4'-9"
2'-6"
4'-9"4'2'
9"1'-8"
1'-2"
4'-8"
20'
SWITCHGEAR DISCONNECT
CONTROL CONSOLE
4'-9"
SCALE : NTS
BESS EQUIPMENT LEFT VIEW4
1'-8"
8'-2"
6'-1"
4'-9"
5'-6"
4"
SCALE : NTS5BESS EQUIPMENT RIGHT VIEW
1'-8"
4"
SIDE CABLE OUTLET HOLE
SITE PLAN / BATTERY ENERGY
STORAGE SYSTEM
FOR
ACROPOLIS INC
LOT 1, BLOCK 1, OFFICES AT GRAPEVINE
AB 1863 TRACT 2B
CITY OF GRAPEVINE, TARRANT COUNTY, TEXAS
312.4 SQ. FT.
ZONE: PCD - COMMERCE-PLANNED, PROPOSED
ADDITION OF BATTERY ENERGY STORAGE SYSTEM
DATE OF SUBMISSION: JULY 28, 2026
08-19-2026