Expertise
Karl is a Partner and lawyer at the Berlin office of Addleshaw Goddard , with more than ten years of experience advising on German and European energy, regulatory, and antitrust law. He advises clients at every level of the energy market, with particular depth in renewable energy — including renewable generation and battery energy storage systems (BESS) — as well as innovative energy solutions across the entire energy value chain.
Karl advises a broad range of market participants, including utilities, supply and trading companies, project developers, investors, and energy-intensive industrial companies.
His practice further focuses on energy cost optimisation and the decarbonisation of both power generation and industrial operations. He regularly supports clients through the development, construction, and modernisation of renewable energy generation facilities and flexibility solutions, and advises extensively on Power Purchase Agreements (PPAs).
Karl also has significant experience guiding clients through the transition to RFNBOs, with a particular focus on the hydrogen economy, as well as on other energy infrastructure projects, including low-carbon gas as a transition technology. He further advises on district heating networks and the deployment of industrial and renewable heat solutions.
- Experience
- Advised a global energy trader and infrastructure investor on grid connection matters, grid connection agreements, and related regulatory issues for more than ten battery storage projects in Germany. (2025–2026)
- Advised a European industrial, energy, and metals group on the acquisition of several ready-to-build battery storage projects in Germany, with a focus on buy-side due diligence, regulatory requirements for grid fee exemptions, and project development, construction, operation, and market access agreements. (2026)
- Advised one of Europe's largest fertiliser manufacturers on RFNBOs, in particular on the requirements for green and blue RFNBOs under EU law, as well as on Power Purchase Agreements (PPAs) and biomethane supply contracts, including contract drafting and negotiation. (2025–2026)
- Advised a large German municipal district heating supplier on structuring district heating prices, in particular price adjustment clauses, and represented the company in energy antitrust proceedings. (2025)
- Advised a major German energy supply company on low-temperature networks, the utilisation of waste heat from data centres, and high-temperature large-scale heat pumps. (2023)
- Advised a German municipal utility on the modernisation and new construction of power plant facilities, including subsidies for CHP plants, the modernisation of an existing GT-CHP plant, the construction of a new biomass CHP plant, and the corresponding permitting processes. (2023–2026)
- Education
Karl studied law at the University of Passau and the University of Sydney. He completed his legal traineeship in Berlin, where he inter alia worked for an international law firm and the German Federal Ministry of Economics and Energy (Renewable Energy Department). Prior to that, he completed internships with a major German energy company and an international law firm.
He was admitted to the bar in Berlin, Germany in 2016.
Karl started his professional career in 2016 as an associate in the energy practice of an international law firm in Berlin, Germany. During this time, he completed an in-house secondment with the largest network of municipal service providers and utilities in Germany. Together with the energy law team, he joined another international law firm as senior associate in 2020.
Karl joined Addleshaw Goddard in January 2024.
- Languages
- German
- English
- Professional memberships
- Bar Association Berlin
- Publications
Karl also regularly publishes in newspapers and professional journals. Recent examples include:
- Handbook on Hydrogen Law – Legal Framework for the Hydrogen Economy, Wende/Otto (eds.), Beck-Verlag, Glattfeld/Holtkamp, Chapter 6, ‘The Distribution of Hydrogen, Costs, Sales and Use in Industry, Commerce and Households’, January 2026.
- ‘Data Centres in a Field of Tension: Between Electricity Demand and Sustainability Requirements – Site Decisions Guided by Energy Infrastructure and Regulatory Framework’, Holtkamp, Pasalic, in: Börsen-Zeitung, 15 May 2026
- ‘Grid connection procedure for battery storage: Time for a binding legal framework’, Rothe, Holtkamp, in: Tagesspiegel Background, Energy Law, 18 November 2025
- ‘State Aid Framework for the Clean Industrial Deal (CISAF) announced – “Fast-track procedure” for aid for decarbonisation of industry and expansion of renewable energies’, EnergieKrise-Aktuell 2025, 010581
- ‘Energy Sector Relief Mechanisms and Ecological Consideration Requirements‘, in EnergieKrise-Aktuell 2023, Issue 20, 010241
- From 2018 to 2022 he published the bimonthly article "ER-Aktuell" on current developments in the energy sector for the energy law journal “Energierecht (ER)”, e.g. Holtkamp, Dr. Scholtka, et. al, Aktuelle Entwicklungen im Energierecht (ER Aktuell), in EnergieRecht, ER, Heft 6 2022, 248 et. seq.
- Recognitions
- "TOP Lawyer" for Energy Law (WirtschaftsWoche 2026)
