Alexander has many years of experience in advising national and international energy suppliers, global corporations and institutional investors across the entire value chain in the energy sector.
His work primarily involves advising on offshore wind, onshore wind, photovoltaic, and battery storage projects. He supports clients through all phases of a project, from establishing joint ventures for collaborative project development to acquiring project pipelines and investing in existing projects.
During a secondment, Alexander served a leading institutional investor specializing in infrastructure investments. He is recognized by Legal 500 Germany for his expertise in energy transactions (2023).
Alexander also advises on the drafting and negotiation of long-term power supply agreements (PPAs) for the procurement of electricity from renewable energy sources and on the associated regulatory and supervisory issues.
He has also advised on a large number of fundamental issues in the energy industry and represented clients in official and court proceedings. These include matters such as remuneration for power plant operators for redispatch measures, maintaining operational readiness of system-relevant coal-fired power plants, and the regulation of hydrogen networks.
Adrian represents clients in domestic and cross-border transactions, in particular local and international companies, private equity/venture funds and growth companies.
In addition Adrian acts as a business angel for several venture capital start-up companies.
He focuses in particular on disputes in antitrust law. His work includes representing a client from the petrochemical industry in the enforcement of antitrust claims for damages against companies involved in cartels.
Already as a trainee lawyer at Orrick, he contributed to the successful action for annulment of an investment control prohibition decision before the Berlin Administrative Court.
Before becoming a lawyer, Leon Diederichs completed a stage at the German Federal Cartel Office and worked for several international law firms including Orrick.
He has acted as counsel, presiding arbitrator, sole arbitrator, or chairman in more than 300 arbitration proceedings, including ad hoc proceedings and arbitrations under the rules of the leading arbitration institutions.
As counsel, he represents private investors, international corporations, sovereign states, and state-owned enterprises in a range of significant, complex, and often cross-border disputes.
In addition to counsel work and acting as an arbitrator, Siegfried also acts as an expert witness before German courts as well as courts in the United States and the United Kingdom and before regulatory institutions.
His experience includes disputes in the areas of M&A, energy, investment protection, engineering and construction, financing, joint ventures, and intellectual property.
He is admitted to practice as an attorney-at-law in both Germany and New York.
Chambers Global 2024 describes Siegfried as a "star individual" who is "often appointed as arbitrator in complex international arbitrations" and is also "a leading practitioner in the field of investment arbitration" with "extensive experience as an arbitrator in investment law cases".
Siegfried was a member of the Advisory Board of the American Arbitration Association (2009 to 2020) and a member of the Panel of Conciliators of the International Centre for Settlement of Investment Disputes (ICSID) (2011 to 2017). He was a member of the Board of the German Arbitration Institute (DIS) (2012 to 2022) and has been a member of the DIS Council (since 2022). He was also Chairman of the Mediation Committee of the International Bar Association (IBA) (2007-2008).
He is co-editor of the German Arbitration Journal (Zeitschrift für Schiedsverfahren (SchiedsVZ)). He regularly lectures and publishes on international arbitration and comparative law. Siegfried is also honorary professor at the Faculty of Law at Heinrich Heine University Düsseldorf, where he has been teaching international commercial arbitration and international civil procedure law for 25 years. Since 2013, he represents the Grand Duchy of Luxembourg as Honorary Consul in North Rhine-Westphalia.
Siegfried Elsing co-founded the German law firm Hölters & Elsing in 1989 and has overseen the merger with Orrick in 2008.
Carsten advises on all sorts of German tax and accounting issues arising for industry clients, financial institutions and private equity funds. Mainly focusing on corporate and real estate transactions and restructurings. He also advises and represents clients with respect to tax field audits and in tax litigation against the fiscal administration and before German fiscal and civil courts. Prior to joining Orrick Carsten completed his legal traineeship in both national and international law firms.
She advises domestic as well as international clients on German and European antitrust and competition law, including mergers, compliance, internal investigations, cartels and abuse of dominance. In addition, Julia advises on foreign direct investment proceedings before the German Federal Ministry of Economic Affairs and Climate Action . Another part of her practice is to provide general corporate counselling.
At the beginning of her career at Orrick, Julia advised national and international clients on complex cross-border mergers and acquisitions, private equity and venture capital investments, so she is experienced in corporate transactions to that extent.
Prior to joining Orrick, Julia worked as research assistant and trainee lawyer for several international law firms in Düsseldorf and Frankfurt.
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