A Boutique Transactional Firm
Energy · Infrastructure · Digital Infrastructure
Counsel for the infrastructure that powers and connects the modern economy.
A boutique transactional practice serving developers, owners, contractors, and manufacturers across the energy, infrastructure, and digital infrastructure sectors, led by a former Chief Counsel with two decades of senior in-house experience advising across the full project lifecycle.
Learn More ↓Built on the lessons learned from being the client.
After two decades inside operating companies, most as the lawyer being relied upon to get the deal done on a schedule, I founded Markeson Law Firm to do for clients what I wished outside counsel had done for me. Less staffing, more substance. Less learning curve, more execution. Less billing-hour pressure, more business judgment. The firm exists for the matters where a senior, deeply experienced attorney working directly with the client produces a materially better outcome than a layered team running up the meter.
Every matter is handled directly by Katie Markeson. No handoffs, no over-staffing, no learning curve on your dime. Clients work with a former Chief Counsel who has personally led billions in EPC and equipment supply transactions, not an associate working under a partner who joins the call for the close.
Embedded for years as the in-house lawyer to operations, supply chain, engineering, and construction leadership, most recently as Chief Counsel for Operations at one of the largest renewable platforms in the U.S. The firm advises clients the way a trusted in-house lawyer would: commercially, practically, and with the business outcome in view, understanding deal economics, schedule pressure, and the real-world consequences of contract language.
Deal-focused, commercially pragmatic, and structured to move at the pace of your business. The firm operates without the overhead, billing layers, conflict tables, and bureaucracy that slow large firms down, passing those efficiencies through to clients in the form of more responsive service and more reasonable fees.
The firm serves a wide range of clients across the energy, infrastructure, and datacenter value chains, bringing the same focused, senior-level engagement to each:
Markeson Law Firm is a boutique transactional practice serving clients across the energy, infrastructure, and digital infrastructure sectors. The firm was launched to bring a different model to sophisticated commercial work: one built around direct senior engagement, deep industry fluency, and a commercial sensibility refined through years of in-house leadership.
The firm's founder, Katie Markeson, spent the bulk of her career in senior in-house roles at publicly traded global energy, grid technology, and industrial manufacturing companies, most recently as Chief Counsel for Operations at AES Clean Energy, where she advised on a 16+ GW operating portfolio and a 55+ GW development pipeline. Earlier in her career, she led commercial contracting and major project work for global manufacturers of engineered industrial equipment (Flowserve Corporation) and grid technology (Alstom Grid, now GE Grid Solutions).
That background shapes everything the firm does. Clients hire Markeson Law Firm when the work matters too much to delegate down, and when the difference between a well-structured deal and a costly one is the experience of the person on the other end of the phone.
Admitted to practice in California, New York, and Washington State.
The firm's work centers on four closely related practice areas, supported by deep cross-border and international transactional experience.
Practice Area 01
Development, supply, operations, and disposition across renewable and conventional energy assets.
Counsel to developers, owners, operators, and equipment suppliers across the energy value chain. The firm advises on the agreements that move projects from greenfield through long-term operation, including development documents, power purchase agreements, equipment procurement, EPC and balance-of-plant contracts, interconnection, and long-term service and asset management arrangements. Work spans solar, wind, battery storage, conventional generation, and transmission infrastructure, with deal experience across North America, Latin America, EMEA, and Asia-Pacific.
Practice Area 02
EPC, design-build, procurement, and the contracts that govern execution at scale.
Major capital projects succeed or fail on the strength of their underlying contracts. The firm structures and negotiates the full suite of construction and procurement instruments: EPC and design-build agreements, balance-of-plant contracts, supply-and-install arrangements, long-lead equipment procurement, commissioning and performance testing protocols, warranty regimes, and change-order frameworks. Clients include project owners, developers, contractors, and OEMs navigating the operational and financial risk inherent to large infrastructure builds.
Practice Area 03
M&A, joint ventures, commercial agreements, and fractional general counsel services.
The firm supports clients on the broader commercial matters that surround infrastructure work and stand on their own: stock and asset purchases, joint ventures and partnership structures, services and supply agreements, intellectual property and licensing arrangements, and corporate governance matters. Fractional general counsel engagements are available for growth-stage companies that need senior legal leadership without a full-time hire.
Practice Area 04
Transactional counsel for the companies building, powering, and operating the digital economy's physical infrastructure.
The world's digital infrastructure runs on physical assets: datacenter campuses, transmission and power equipment, cooling and grid technology, and the complex supply chains that build them. The firm advises hyperscalers, datacenter developers and operators, EPC contractors, and equipment suppliers across the full transactional spectrum of datacenter buildout. Particular depth in the energy and infrastructure interfaces that distinguish datacenter projects: behind-the-meter generation, large-load utility coordination, on-site storage, and grid stability commitments.
The firm's transactional experience spans the full lifecycle of infrastructure and commercial work. Representative areas of practice include:
Two decades of transactional work across some of the largest infrastructure portfolios in the United States. Representative figures from in-house and firm engagements include:
A summary of the firm's transactional experience across energy, infrastructure, and datacenter sectors.
Extensive experience structuring and negotiating master supply, OEM, and equipment procurement agreements for utility-scale renewable, conventional, and grid technology projects, cumulatively in excess of $6 billion across solar, wind, battery storage, transmission, and balance-of-plant equipment categories. Includes long-lead procurement, master supply arrangements, channel partner agreements, and OEM partnerships.
Significant experience structuring and negotiating EPC, design-build, balance-of-plant, and civil/electrical agreements for utility-scale infrastructure projects, cumulatively in excess of $5 billion across renewable, conventional, and transmission asset classes. Substantive depth in commissioning and performance testing protocols, warranty regimes, change orders, and remediation negotiations on distressed and delayed projects.
Direct experience structuring and negotiating the transactional building blocks of datacenter and digital infrastructure work: site control and real estate, power procurement and renewable PPAs, EPC and design-build contracting, equipment supply, and grid interconnection. The firm's energy and infrastructure background applies directly to the legal and commercial questions that distinguish datacenter projects: behind-the-meter generation, large-load utility coordination, on-site storage, and grid stability commitments.
Lifecycle counsel on long-term service agreements (LTSAs), O&M agreements, asset management arrangements, and real estate matters across an operating renewable portfolio in excess of 16 GW and more than 500 individual projects. Real estate work spans land leases, easements, crossing agreements, and post-COD real property issues. Operations work spans warranty enforcement, claims management, performance disputes, end-of-life repower contracting, and recycling agreements.
Experience supporting transmission and distribution modernization initiatives, including network management systems, smart grid technologies, metering infrastructure, and grid technology integrations. Advising on the commercial, intellectual property, technology transfer, and implementation issues that arise as utilities and infrastructure owners modernize critical energy networks.
Senior in-house leadership of a $1.8 billion engineered products division, supporting commercial contracting, channel partner agreements, intellectual property and licensing, and product liability matters across a 1,100+ partner network.
Counsel on asset acquisitions and divestitures; lead counsel on joint venture negotiations, and management of partnership agreements across renewable and conventional generation portfolios; and ongoing advice to boards and senior executives on commercial risk, indemnification structures, and major transaction approvals.
Lead counsel on the reconstruction of a partially destroyed operating utility-scale renewable facility, designing a novel contractual and risk-allocation framework that aligned EPC reconstruction terms with insurance recoverability, lender approvals, offtake obligations, and live operational constraints. The matter required simultaneous compliance with multiple competing requirements: keeping the surviving facility operational under existing PPAs, structuring reconstruction terms acceptable to the EPC contractor and the lender, preserving insurance recoverability, and meeting environmental and regulatory obligations for damaged equipment. Returned the facility to full operation within the contractually required timeframe.
Founder
Katie Markeson is a transactional attorney with two decades of experience leading complex commercial, project, and infrastructure work for global energy and industrial businesses. She founded Markeson Law Firm to bring senior, focused counsel to the matters that most need it, particularly in the energy, infrastructure, and capital projects sectors where she has spent her career. Clients value her ability to combine sophisticated transactional experience with practical business judgment developed through years of advising operators, engineers, construction and procurement teams, and executive leadership.
Before launching her own practice, Katie was Chief Counsel for Operations at AES Clean Energy (formerly sPower), where she advised the senior executives and vice presidents responsible for operations, supply chain, engineering, and construction. In that role she supported a 16+ GW renewable operating portfolio and a 55+ GW development pipeline: negotiating master supply, EPC, balance-of-plant, and repower agreements; managing real estate matters across more than 500 operating projects.
Earlier in her career, Katie led commercial contracting and major project work for global manufacturers of engineered industrial equipment (Flowserve Corporation) and grid technology (Alstom Grid, now GE Grid Solutions). She began her legal career at AES Corporation, where she spent seven years supporting energy project development, financing, and operations. Across her career, she has structured and negotiated transactions across the U.S., Latin America, EMEA, and Asia-Pacific.
Katie is a regular advisor to operating company boards and executive teams on commercial risk, market and policy developments, and the structuring of large capital transactions. She has trained hundreds of cross-functional team members on contract negotiation and compliance matters affecting the energy and infrastructure sector.
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Markeson Law Firm