Energy · Digital Infrastructure · Industrial
Arthur Baker is the founding partner of four operating companies building the energy and digital infrastructure of tomorrow.
Heathcote Capital, Nordeston, SteelTech, and Karsman. One platform, four operating companies, spanning development, capital, and the industrial backbone of the energy transition.
FOUR
OPERATING COMPANIES
TWO
CONTINENTS
IN-HOUSE
MANUFACTURING CAPABILITY
FOUNDER-LED
LONG-HORIZON DECISION MAKING
OWN CAPITAL
ALIGNED WITH EVERY PROJECT
Who We Are
Operator-developers with an industrial backbone.
Arthur Baker is a privately held investment platform and the founding partner of four operating companies. Heathcote Capital develops and invests in energy and digital infrastructure. Nordeston manufactures energy storage and power systems. SteelTech delivers industrialized construction. Karsman engineers building envelope systems. Each company operates independently in its market under its own day-to-day leadership, with Arthur Baker as long-term controlling partner. Together, they span the full value chain of the energy transition.
Nordeston's battery manufacturing facility. One of four Arthur Baker operating companies.
Our Structure
Four companies. Four disciplines. One platform.
Energy & Construction Systems
Three Manufacturing Companies
Nordeston, SteelTech, and Karsman are independent operating companies in energy storage, industrialized construction, and building envelope manufacturing. Each serves its own market with its own customer base and competitive position, with most revenue coming from external customers across utility, industrial, commercial, and data center sectors.
- Nordeston: BESS, supercapacitor, and transformer manufacturing
- SteelTech: prefabricated cold-form steel and construction services
- Karsman: metal and glass façade solutions
Development & Capital
Heathcote Capital
Heathcote Capital originates, develops, and invests in institutional-scale data centers, energy, and real asset opportunities across the United States and Europe. As an active developer working alongside institutional capital partners, Heathcote leads Arthur Baker's deployment into utility-scale renewable energy, firm power, and hyperscale digital infrastructure.
- Utility-scale solar, wind, BESS, and natural gas generation
- Hyperscale data center campuses
- Origination, development, and execution across the project lifecycle
One platform spanning major core parts of the value chain of the energy, digital infrastructure, and industrial construction economy.
Portfolio Companies
Four operating companies. Independent in market. Founded and built by Arthur Baker.
Each company operates independently in its market with its own day-to-day leadership. Arthur Baker is the founding partner of all four. Together, they cover the full value chain of the energy transition and digital infrastructure economy.
ENERGY & DIGITAL INFRASTRUCTURE
Heathcote Capital
DEVELOPMENT · INVESTMENT · STRATEGIC CAPITAL
Heathcote Capital originates, develops, and invests in institutional-scale data centers, energy, and real asset opportunities across the United States and Europe. Active development from early-stage origination through construction, stabilization, and exit.
Visit Heathcote Capital→ENERGY STORAGE & POWER SYSTEMS
Nordeston
BESS · SUPERCAPACITOR · TRANSFORMER
Nordeston manufactures battery energy storage systems, supercapacitors, and transformers for grid-scale, renewable, and industrial applications. Serving utility, developer, and industrial customers across multiple markets.
Visit Nordeston→INDUSTRIALIZED CONSTRUCTION
SteelTech
PREFABRICATED COLD-FORM STEEL · CONSTRUCTION
SteelTech manufactures prefabricated cold-form steel building systems and delivers construction services for hotels, student housing, multifamily, industrial, commercial, and data center projects. Designed for speed, repeatability, and predictable cost on demanding schedules.
Visit SteelTech→BUILDING ENVELOPE SYSTEMS
Karsman
METAL & GLASS FAÇADE SOLUTIONS
Karsman designs and manufactures engineered metal and glass façade systems for commercial, industrial, and data center applications. Integrated design-fabrication capability eliminating the schedule risk of fragmented curtain wall supply chains.
Visit Karsman→Group Leadership
The leadership across Arthur Baker and its operating companies.
Arthur Baker is led by its Managing Partner alongside the co-founders of its operating companies, each bringing operating, transactional, and strategic leadership experience across energy, infrastructure, finance, and manufacturing.
Jacob Seymen
CO-FOUNDER & MANAGING PARTNER, ARTHUR BAKER
Jacob Seymen leads Arthur Baker's investment platform across renewable energy development, digital infrastructure, clean-energy supply chains, and precision manufacturing. He founded and led a broadband infrastructure company sold to a GSM operator in 2013, and previously served on the board of a Bloomberg Tier 1 solar manufacturer with an international production footprint. Two decades across operating, transactional, and strategic leadership in energy and infrastructure inform how Arthur Baker thinks about projects, partners, and long-term ownership.
Edward Tekin
CO-FOUNDER & MANAGING PARTNER, STEELTECH
Edward Tekin leads SteelTech's industrialized construction and building systems business, overseeing the manufacturing and delivery of prefabricated cold-form steel structures and the integrated construction services that bring them to site. His career spans engineering, fabrication, and large-scale project delivery across hotels, student housing, multifamily, industrial, commercial, and data center construction. His operating focus is the discipline that turns repeatable manufacturing into predictable build timelines, the constraint that determines whether infrastructure projects deliver on schedule.
Hakki Kara
CO-FOUNDER & MANAGING PARTNER, NORDESTON
Hakki Kara leads Nordeston's energy storage and power systems manufacturing, with deep experience in large-scale energy storage and power generation across Europe, Central Asia, and the Middle East. He has overseen the deployment, integration, and commissioning of utility-scale BESS, supercapacitor, and transformer systems for grid-connected and behind-the-meter applications. His hands-on approach to production management and battery system integration anchors Nordeston's operating discipline.
Mark Gollin
CO-FOUNDER & MANAGING PARTNER, HEATHCOTE CAPITAL
Mark Gollin leads Heathcote Capital's investment strategy and capital formation, with 25+ years across global real estate, credit, and special situations. He began his career at Bear Stearns and Lehman Brothers in structured credit and distressed debt, before senior roles at Apollo Global Management and Bayview Asset Management, where he built and scaled a €3.5+ billion European distressed real estate platform. Most recently, he served as Managing Director and Global Head of Platforms at Arrow Global Management, overseeing more than 20 operating businesses across eight European countries.
Our Approach
How we build, fund, and own better infrastructure.
Founder Capital
Arthur Baker invests as the founding partner of every company in the platform, alongside capital that shares our long-term horizon. This patience and discipline let us build durable businesses without the constraints of typical fund lifecycles or short-term mandates.
Vertical Integration
Three of our four companies manufacture the critical components that energy and digital infrastructure projects require. That means margin capture, schedule control, and quality assurance that third-party-dependent developers cannot match.
Independent Operating Companies
Each portfolio company operates with its own leadership, customer base, and competitive position. This independence keeps each business market-disciplined while allowing strategic alignment when it matters.
Cross-Continent Execution
We operate across the United States and Europe, with on-the-ground capability in both renewable energy development and industrial manufacturing. Two continents, one platform.
Partner-Led Discipline
Four Managing Partners lead four distinct functional disciplines. Decisions are made by principals, not committees. Our counterparties deal directly with the people accountable for outcomes.
Our View
A note from the founding partner.
The energy transition will be built by operators, not by financiers. We started Arthur Baker because we believe the most important infrastructure of the next two decades requires owners who understand how things are actually made, scheduled, and delivered.
Digital infrastructure is where this opportunity is most acute. AI compute, hyperscale data centers, and the reshoring of advanced industry are reshaping the demand curve for power, real estate, and capital faster than any sector in modern memory. We develop, finance, and own digital infrastructure assets directly. We do not separate the operating business from the capital that funds it. Heathcote Capital originates and structures the projects. The rest of our platform builds what they need.
The grid has its own crisis. Power demand from AI data centers, electrification, and reshored manufacturing is outpacing what the existing grid can deliver. Battery energy storage, transformers, and supercapacitors are no longer optional components. They are the infrastructure beneath the infrastructure. We manufacture them through Nordeston because reliable supply at scale has become a competitive moat, and because the customers building digital infrastructure cannot afford the queues, the import dependencies, or the quality risks that come with sourcing them anywhere else.
Construction is moving off the jobsite and into the factory. The labor economics, the schedule risk, the quality control problems that have plagued conventional construction for decades all point to one answer: industrialized manufacturing of building systems. This is why we build prefabricated cold-form steel structures through SteelTech and engineered envelope systems through Karsman. The next generation of hotels, student housing, multifamily residences, data centers, and industrial facilities will not be assembled by hand on muddy sites. They will be manufactured under roof and installed on schedule.
We invest with discipline and decades-long patience. Arthur Baker partners with capital that shares our long-term horizon. Every commitment we make is one we expect to honor for ten, fifteen, twenty years. This is a different patience than the typical fund model, and it is the patience real infrastructure deserves. The opportunity in front of us is generational, and we intend to be among the platforms that built it.
— Jacob Seymen
Co-Founder & Managing Partner, Arthur Baker
Get In Touch
Let's build the next platform together.
All inquiries are reviewed by our principals. We respond within two business days.
Arthur Baker Company
250 Park Avenue, Suite 701New York, NY 10177
United States
+1 (929) 213-6472