AI-Ready Data Centers. Built Right from the Start.
Independent advisory, owner's engineering, and site development for the facilities powering the next generation of AI. We help you get the architecture right before any equipment is ordered or concrete is poured.
Critical Infrastructure Advisory
59 LLC is a critical infrastructure advisory firm. We provide owner's engineering, manufacturer's representation, and site development for data centers designed to support AI training, inference, cloud, and colocation workloads. Our core business is enabling five nines of reliability across network, power, and cooling in the most efficient and effective way possible.
Our advisory work is fee-based and independent of equipment sales. Our manufacturer's representation is disclosed to every client. We don't blur the line between the two.
Owner's Engineering & Architecture Advisory
We work with site developers, facility operators, and hyperscaler engineering teams on the design decisions that define a facility for the next 25-40 years: power architecture, cooling strategy, modular integration, and the design standards that tie them together.
That means working through questions like: How do you design power and cooling infrastructure flexible enough to serve AI training, inference, and traditional cloud workloads without overbuilding for any single use case? Where should the greyspace/whitespace boundary fall so the building infrastructure survives multiple generations of IT equipment? How do you write specifications that preserve optionality without creating scope creep?
Our principal brings direct experience developing design standards for high-density computing and liquid cooling integration, performing CFD modeling to validate white space layout and MEP design, and compiling the technical documentation that wins hyperscale leases - having directed over $1 billion in data center development spend and supported development efforts across multiple campuses and states.
On power architecture specifically, our recommendations draw on cross-industry precedent: rail traction, telecom HVDC, utility-scale solar, automotive EV. We track the full vendor landscape and the semiconductor supply chains underneath it, so our guidance reflects what's actually buildable, not what's in a product brochure.
Manufacturer's Representation: Knick Interface
59 LLC is the North American data center lead for Knick Interface, supporting power monitoring and control solutions for high-voltage DC systems up to 4800VDC.
Knick builds the isolated measurement and signal conditioning equipment that DC protection schemes depend on - the fast, accurate voltage and current transducers that feed circuit breakers and protection relays the data they need to detect faults and coordinate trips. In the high-voltage DC measurement space, they have effectively zero direct competitors at their performance tier, which is why they're deployed across rail traction, energy storage, and industrial power systems worldwide. As data centers move toward higher-voltage DC architectures, this measurement layer becomes critical infrastructure rather than an accessory.
This is a commercial relationship and we disclose it to every advisory client. Knick makes measurement and isolation equipment, not power conversion or distribution gear, so this relationship does not create conflicts with our architecture recommendations.
Site Development
We serve as technical partners on data center development projects - land and utilities - across the USA, with active involvement in projects exceeding 2GW of total capacity. We develop modular data center design and integration strategies flexible enough to serve cloud, inference, AI training, and colocation tenants from the same infrastructure.
Our development work applies the same architecture principles we advise on: design the long-lifecycle infrastructure to be topology-agnostic, so the building outlasts the technology inside it.
Expertise That Moves Projects Forward
Full-Stack Infrastructure Expertise
Data center architecture is a multi-discipline problem. Power decisions affect cooling layouts. Cooling strategy constrains density. Density drives structural and civil requirements. We work across all of it: substation, outside plant, civil, architectural, structural, telecom, electrical, and mechanical. Design decisions in one discipline don't create problems in another.
An Operator-First Approach
We design for the people who have to run the facility for the next 20 years, not just the team that builds it. Every design standard, every specification, every vendor recommendation gets pressure-tested against the question: can your operations team actually maintain this at 3am on a Sunday? If the answer is complicated, the design needs more work.
Industry Relationships That Accelerate Your Project
We maintain an active network across the data center ecosystem: OEMs, contractors, designers, and supply chain partners. We sit on ASHRAE SSPC 127 (developing test standards for data center air and liquid cooling) as a voting member, observe IEEE working groups P3710.1 (DC distribution for data centers) and P3593 (stationary battery risk), and serve on the board of Data Center Young Professionals through 7x24 Exchange. These aren't decorative affiliations - they're where we stay current on what's actually shipping, what's delayed, and what's coming next.
Proven Scale
Our principal has supported development efforts across multiple data center campuses in multiple states, directed over $1 billion in development spend, and compiled the technical responses that helped win over $3 billion in new hyperscale business in a single year. That means hands-on experience with CFD modeling, design standard development, basis of design overhauls, and the supply chain relationships that turn a powered site into an operating data center.
Clients We Work With
Site Developers
You have land and power. You need the technical expertise to turn that into a facility that hyperscale tenants will actually lease. We provide the design standards, vendor strategy, and technical due diligence that bridge the gap between a development site and a commissioned data center.
Facility Operators
You're committing capital to buildings that need to earn returns for 25+ years, but workload requirements are evolving faster than building lifecycles. We help you design infrastructure that preserves flexibility across AI training, inference, cloud, and colocation use cases without requiring different buildings for different tenants.
Hyperscaler Engineering Teams
You're designing the facilities your operations teams will live with for a decade or more. We bring cross-discipline experience and vendor ecosystem depth to the architecture decisions that matter most, and we're honest about the tradeoffs rather than selling you a predetermined answer.
Institutional Finance & REIT Analysts
Infrastructure architecture decisions affect asset valuation, tenant flexibility, and refinancing risk across the facility lifecycle. We provide the technical due diligence that translates architecture choices into financial language: Which decisions create lock-in? Where do choices limit conversion options? How do you underwrite a 25-year asset when the technology inside it evolves on 5-7 year cycles?
Ecosystem Depth Without Conflicts
Our recommendations are informed by continuous monitoring of the vendor ecosystem across the full data center infrastructure stack. We don't partner with these companies (except where disclosed). We study their products, track their roadmaps, and understand where their capabilities fit, where gaps exist, and where the supply chain is thin.
Power Conversion & Distribution
Delta Electronics, Vertiv, Schneider Electric, ABB, Eaton, Hitachi Energy, Legrand/Starline, LayerZero Power Systems, Mitsubishi Electric, MGM Transformer, Giga Energy, Prolec GE
DC Protection & Switchgear
Secheron, G&W Electric, Powell Industries, ABB SACE, Atom Power, S&C Electric, Eaton
On-Site Power Generation
Caterpillar, Cummins, Rolls-Royce/MTU, Volvo Penta, Generac, Perkins, Mitsubishi, Enchanted Rock, Capstone, Waukesha, Jenbacher, Siemens SGT, GE, Solar Turbines, Mitsubishi Heavy Industries, 2G Energy, Wabtec
Energy Storage & Batteries
SAFT, Samsung SDI, East Penn Manufacturing, BYD, CATL, Vertiv
Cooling & Thermal Management
Vertiv, Schneider Electric, Trane, York/Johnson Controls, AAON, Munters, CoolIT Systems, Motivair, JetCool, Iceotope, Green Revolution Cooling, Alfa Laval, SPX Cooling, Armstrong Fluid Technology, Grundfos
Measurement & Isolation
Knick Interface (represented by 59 LLC), LEM, Yokogawa, Belimo, Krohne, Emerson, Pyromation, Amphenol
Semiconductor Supply Chain
We track the underlying device supply chains by voltage class. The components available at each voltage determine what's actually buildable at scale, regardless of what vendor marketing suggests.
Standards & Working Groups
ASHRAE SSPC 127 (cooling test standards, voting member), IEEE P3710.1 (DC distribution for data centers, observer), IEEE P3593 (stationary battery risk, observer), NEC Article 712, UL 2755, UL 489G
Original Analysis on Data Center Architecture
We publish original research on data center architecture, drawing on cross-industry analysis and first-principles engineering.
The Greyspace/Whitespace Demarcation
Why the boundary between facility infrastructure and tenant equipment is the most consequential design decision in a hyperscale data center, and how to draw it so the building outlasts the technology inside it.
Stop the Spec War
The industry is debating voltage standards when the more important question is topology. A framework for making the long-cycle infrastructure decisions first and the short-cycle equipment decisions second.
The 140-Year Pattern
Voltage standards are historically set by the weakest component in the deployment chain. Rail traction, telecom, and solar all followed this pattern. What it means for data center power architecture today.
Topology Locks Harder Than Voltage
Why topology decisions have 25-40 year replacement cycles while voltage decisions have 7-12 year cycles, and why this asymmetry should drive your architecture strategy.
Ready to discuss your infrastructure requirements?
Let's talk about how we can help you get the architecture right from the start.