Winston-Salem, NC · Tier III · Carrier-neutral

Tier III bank data center expanding to 125MW AI facility

470,000 square feet in downtown Winston-Salem, fed by 6 circuits from 3 substations.
Fiber from 5 providers. 4 MW critical load available in Q1 2027, 9.25 MW in Q3 2027,
followed by 18.5 MW and 30+ MW upgrades in 2028 and beyond.

Aerial view of the West End Data Center and Annex in downtown Winston-Salem, with twelve lettered points of interest marked across both buildings

Looking north — 801 W 4th St & 809 4½ St W, Winston-Salem NC

Photographed 2026 · E & H under construction

A

West End Center — main building

809 4½ St WOver 380,000 SF across seven floors. The lower two levels hold UPS and battery systems with significant room for expansion.
- Level 1Security, offices and conference rooms, a lounge with showers and restrooms, and white space for central infrastructure.
- Level 2Roughly 75,000 SF of raised-floor white space.
- Levels 3–4Former office space wired for over 1,000 employees. Open for data center expansion or continued office use.
- Level 5Operations center and infrastructure — transformers, pumps and water treatment.
The Annex

801 W 4th StRoughly 90,000 SF on the main floor with 15 ft ceilings and two sets of restrooms, plus 12,000 SF across two sections on the second level. Structure can be extended to carry any number of additional floors. The current rooftop holds just under 200 parking spaces.
Tunnel

A wide tunnel and conduit run beneath 4½ St W, connecting the Annex to the West End Center main building.
Offices and conference rooms

Roughly 8,400 SF of office space with elevators and one set of restrooms.
Rooftop cooling infrastructure

3,800 tons of air-cooled chillers and HVAC equipment in place today. A platform to carry thirteen additional chillers for future liquid-cooling systems is under construction.
Diesel generators — west

Five diesel generators with switching systems and a dedicated control room.
Diesel generators — north

Four diesel generators and switchgear.
New generator building

Capacity for ten new 4 MW generators plus fuel and switching.
4 × 3 MW generators ready for installation Q2 2027.
The roof is built to carry heavy loads for future expansion.
Fuel storage and polishing

34,000 gallons of fuel storage integrated with an additional 5,000 gallons of belly tanks, diesel polishing and cleaning systems, and dual external inputs at the loading dock.
Six loading docks

One dock on the Annex’s southwest corner along W 4th St and one on its northeast corner along 4½ St W. Three internal bays sit on the West End Center’s southwest corner along 4½ St W, plus a drive-in dock on the northeast corner at 5th St.
6 in steel natural gas feed

A 6 in line runs along W 4th St beside the building. Engineering studies are underway to establish the maximum pressure and volume available for additional on-site backup and primary generation.
100 kV transmission line

The initial request for 90 MW fed via transmission has been granted. GIS substation design and engineering studies are pending, with capacity estimated to be available in 2029.

< 4 ms

to Ashburn

< 3 ms

to Atlanta

< 3 ms

to Raleigh

2 vaults

diverse fiber entry

5 carriers

in the meet-me room

Phased buildout · cumulative IT load

Capacity you can schedule against.

Q1 2027 · Phase I

4MW IT

Q3 2027 · Phase II

9.25MW IT

Q2 2028 · Phase III

18.5MW IT

2029 · Phase IV

30+MW IT

Live firstFirst halls energized on service already delivered to the building.

UPS completeAdditional generators, switches, and UPS systems installed to increase critical IT load capacity.

+13 MWNew Duke Energy capacity lands, following 2.575 MW 480 V feed and 13 MW 24 kV feeds added in Q2 2027.

TransmissionAdditional transmission capacity in study for 2029–2030. Generator plant expands toward 40 MW.

Why this building

Q1 2027 availability with long-term growth.

The power is already here

Six utility feeds from diverse Duke Energy substations, 2N through UPS and PDU with N+1 generation. Nine generators in place, with first four of ten more being installed in 2027.

Utility feeds: 25 MW
Delivered today: 20,641 kW
Planned delivery: 36,216 kW
Duke average rate: $0.0663 / kWh

Eye towards AI density

A chilled-water coil loop is available for AI workloads, with four 550-ton chillers dedicated to 65°F in-row cooling. CRAH is N+2 on every floor, pumps and chillers N+1.

Per cabinet: 50+ kW
Chiller plant: N+2
CRAH units: 30+
Raised floor: 18–24 in

Room for expansion

Beyond the data halls sits 365,000 square feet of conditioned office and storage already inside the envelope — staging, spares, secure build rooms, or your own operations floor.

Total area: 470,000 SF
Conditioned spare: 365,000 SF
Floors: 5 + 2 sub
Clear height: 12–15 ft

Inside the building

Brick exterior of the West End Center main building seen from street level — **West End Center**Main building on 4½ St W

Three roll-up loading bay doors on the southwest corner of the main building — **Internal loading bays**Three bays on the southwest corner

Lobby security turnstiles in the main building requiring displayed access credentials — **Tier III security**Credentialed access at Level 1

Street-level front elevation of the Annex, with its glazed central entrance bay on West 4th Street — **The Annex**Main entrance at 801 W 4th St

Annex entrance lobby with two revolving security doors and optical turnstiles — **Inside the Annex**Revolving security doors and turnstiles

Brick office and conference block on the Annex second level, with a canopied glazed entrance opening onto the deck — **Annex offices and conference rooms**Second level, entered from the deck

Contained hot aisle between two cabinet rows, with a sealed roof and glass end doors — **Hot-aisle containment**Sealed roof and end doors on the cabinet rows

Open raised-floor data hall with lettered grid references and CRAH units around the perimeter — **70,000+ SF of white space**Raised floor with CRAH units on the perimeter

Long row of cabinets running the length of a data hall — **Liquid-cooling upgrades**Existing rows staged for high-density conversion

Caterpillar diesel generator set installed inside a walk-in enclosure — **Diesel generator**CAT set inside its enclosure

Russelectric paralleling switchgear lineup in the generator control room — **Paralleling switchgear**Russelectric controls at the generator plant

Two 17,000 gallon diesel service tanks under a screened enclosure — **Fuel service tanks**Two 17,000 gallon tanks, 34,000 total

Eaton main switchgear assembly fed from Transformer 1 at 480 volts — **Main switchgear**480 V distribution fed from Transformer 1

Row of metal-clad switchgear sections in the main electrical room — **Distribution lineup**Switchgear in the main electrical room

Row of Vertiv UPS modules facing their output switchgear — **UPS gallery**Vertiv modules alongside output switchgear

Large UPS cabinets installed in a distributed-redundant arrangement — **UPS modules**Distributed-redundant configuration

UPS distribution breakers and maintenance bypass section — **UPS distribution**Breakers and maintenance bypass

Rows of C and D battery strings on racks in the battery room — **Battery plant**C&D strings on monitored racks

Numbered Trane air-cooled chillers on the roof deck walkway — **Air-cooled chillers**Trane units on the roof deck

Trane CenTraVac water-cooled chiller in the central mechanical plant — **Water-cooled chiller**Trane CenTraVac in the main plant

Chilled water pumps and welded steel headers in the plant room — **Chilled water pumps**Pumps and headers in the plant room

Chilled water distribution piping running the length of the mechanical gallery — **Mechanical gallery**Chilled water distribution

Specifications

Detailed specifications

Download PDF

Utility service	18.416 MW from four 12 kV lines from two substations. 2.125 MW from a 480 V feed from a third substation. 2.575 MW from a new 480 V line in Q1 2027. 13 MW from new 24 kV feeds to be added mid 2027.
Redundancy	2N UPS and PDU, N+1 generation. Six separate power feeds from three substations. Concurrency and failover throughout.
UPS	15 Vertiv distributed-redundant units, 675 kW minimum module. 9.25 MW IT support in Q2 2027, with 20 MW IT support Q1 2028.
Battery	VLA and lithium with continuous monitoring. 10–15 minutes at full load.
Generators	Currently 4 × 1.00 MW, 2 × 1.5 MW, 2 × 2.25 MW, 1 × 2.5 MW. 4 × 3 MW online in new 10-generator building Q3 2027.
Fuel	More than 38,700 gallons of diesel on site. 6″ natural gas line.
Energy cost	Duke Energy average rate $0.0663 per kWh.

Chiller plant	Four 250-ton and two 400-ton Trane air-cooled chillers at N+2.
High-density plant	Four additional 550-ton air-cooled chillers at N+1 serving 65°F in-row cooling.
Loop type	Chilled-water coil loop available for AI workloads.
Cabinet density	Supports 50+ kW per cabinet.
CRAH	30+ units at 20 and 30 tons, N+2 on every floor.
Redundancy	Minimum N+2 CRAH, minimum N+1 pumps and chillers.
Humidification	Ultrasonic.

Footprints	Cages, cabinets and private suites.
Area	470,000+ SF total, including 365,000 SF of conditioned office and storage space.
Structure	Structural steel and reinforced concrete, concrete exterior. Built 1984; remodeled 1997, 2015 and 2026.
Floors	Main building: five above grade plus two subterranean floors. Clear height 12–15 ft. Annex: 90,000 SF main floor with clear height 15–18 ft. 12,000 SF across two sections on the second level.
Floor system	Antistatic raised floor, 18–24 in.
Seismic	Zone 2D, built to a 1.5 importance factor. Not in a flood plain.
Fire protection	Pre-action dry pipe. Smoke, heat and subfloor detection, remotely monitored, with subfloor leak detection.
Logistics	Six loading docks at opposite corners of both buildings. Built to accommodate large and small trucks.
Expansion	Outdoor steel structures under construction for 10 new generators and additional MEP infrastructure.

Model	Carrier-neutral, with a dedicated meet-me room.
Carriers on net	AT&T, Verizon, Lumen, Segra and Spectrum, with additional carriers nearby.
Entrance vaults	Two diverse fiber vaults.
Backbone	Direct connections toward Virginia, Atlanta and the I-85 corridor.
Latency	Under 4 ms to Ashburn, under 3 ms to Atlanta, under 3 ms to Raleigh.

Guards	On site 24/7/365.
Access control	HID proximity readers plus biometrics.
Surveillance	IP CCTV throughout.
Recording	NVR with a minimum 180-day retention, on site and backed up off site.
Intrusion detection	Yes.

Certifications	HIPAA and SOC 2 Type II.
Audits	Independent compliance audits performed annually.
Design standard	Tier III, 2N, concurrently maintainable.

The site

Two blocks downtown.

Two connected buildings on West 4th Street, running as a Tier III data center, with expansion potential up to 125 MW.

Two blocks at 801 W 4th St and 809 4½ St W
Duke Energy service via redundant lines from 3 substations
Loading docks and freight access sized for industrial data center infrastructure equipment
Approved data center zoning and community appreciation of recent enhancements.
No height limits for potential greenfield expansion at the 801 W 4th St Annex

The Annex rooftop parking deck with mechanical plant along its north edge and the West End Center main building rising behind it — Annex rooftop deck, looking north to the main building

contact@westenddc.com +1 512 574 2032

Theme

West End Center — main building

The Annex

Tunnel

Offices and conference rooms

Rooftop cooling infrastructure

Diesel generators — west

Diesel generators — north

New generator building

Fuel storage and polishing

Six loading docks

6 in steel natural gas feed

100 kV transmission line