About
Blackvolt Energy develops, builds, and operates utility-scale battery storage in Austria. What distinguishes the company from other market participants is a founding team with international investment banking experience, combined with deep technical and regulatory expertise in the Austrian energy market.
The result is a battery storage developer that understands both sides: the perspective of institutional investors as well as the engineering and regulatory requirements of large-scale storage projects.
Why Blackvolt Energy
About us
Blackvolt Energy is the first project developer in Austria to deliver utility-scale battery storage across the full value chain: from site analysis and permitting to construction and ongoing operation. With a portfolio of 2.5 GW and more than 30 projects in development, the company holds the most advanced project maturity in the Austrian BESS market by a clear margin.
Three factors shape the company's DNA.
The founding and leadership team brings more than 50 combined years of experience in investment banking, M&A, and infrastructure finance, gained at institutions including Bear Stearns, UBS, Jefferies, and RBC Capital Markets. This capability feeds directly into the structuring of bankable projects.
The technical team combines experience in energy systems engineering, mechatronics, and battery technology. Algorithm-driven trading strategies maximise revenue across multiple market channels.
Through the subsidiary Blackvolt Operations and Management GmbH, Blackvolt operates and maintains its own assets, a differentiating feature that gives investors control over the full value chain.
Behind Blackvolt Energy stands a founding team with international experience across energy, technology, capital markets, and corporate development. Greg Green, Johannes Srajer, and Constantin Vana bring distinct perspectives and track records: from international capital markets and corporate finance to technology development and operational delivery.
What connects them is a shared understanding of how sustainable infrastructure and energy projects need to be developed today: technologically grounded, economically viable, and built for the long term. Blackvolt was founded on that premise, with the objective of connecting technology, sustainable infrastructure, and scalable growth.
CEO
More than 20 years of experience in investment banking, capital markets, and equity investment, with prior roles at Bear Stearns, RBC Capital Markets, Jefferies, and MAS Energy. Co-founder of MAS RNG Supra, a renewable natural gas platform divested for over USD 1 billion in 2022. Founder and managing partner of Clarence Capital Partners, the majority owner of Blackvolt Energy.
Education: University of Wollongong. Chartered Financial Analyst (CFA).
LinkedIn profile
CFO
More than 13 years in investment banking, M&A, and capital markets, with prior roles at UBS, Jefferies, Cantor Fitzgerald, and the UniCredit Group. Responsible for financial strategy, investor relations, and capital structuring across the Blackvolt projects.
Education: Cranfield School of Management; Vienna University of Economics and Business.
LinkedIn profile
CTO
More than 15 years as a technology executive and in the management of technology companies, with prior roles at IMS Nanofabrications, DAS Energy, and CCE Clean Capital Energy. Responsible for technical design, system architecture, and the trading-algorithm framework across the Blackvolt storage projects.
Education: TU Vienna, BOKU University Vienna, Danube University Krems. Dr. DI, MBA.
LinkedIn profileThe core team combines capital-markets, finance, and technology capability, from project structuring through asset development to ongoing operation.
VP of Corporate Finance
9 years of experience in corporate and investment banking, M&A, capital markets, and infrastructure development, with prior roles at RBC Capital Markets and Cavnue. Associate Director at Clarence Capital Partners, the majority owner of Blackvolt Energy.
Education: Marquette University.
Senior Technical Advisor to Management Board
45 years of experience in the energy and power sector, including nuclear and renewables. Extensive leadership track record as Director, Executive Vice President, and CEO, with active board roles at listed and private companies across the United States, the United Kingdom, and Europe.
Education: MA Engineering, University of Cambridge.
Chief Legal Officer
More than 40 years of experience in project finance, M&A, corporate finance, and securities law, representing investors, sponsors, developers, lenders, and utilities.
Lead Business Development
More than 15 years of experience as an energy expert, including an extended tenure at the International Atomic Energy Agency of the United Nations.
Education: Technical Physics, Vienna University of Technology (TU Wien).
Lead Finance & Accounting
More than 18 years of experience in finance, operations, strategic planning, and organizational management across high-growth companies and advisory firms. Responsible for financial operations, business strategy, process optimization, and human capital initiatives across multiple industries.
Education: Indiana University Kelley School of Business.
Accounting & Controlling
More than 27 years of experience in accounting and financial management. 17 years in the telecommunications sector, followed by 10 years in IT with responsibility for multiple operating entities across Austria and the CEMEA region.
Education: BFI Vienna (European Business and Management), certified accountant.
Lead Asset Realisation
Qualified electrical engineer with comprehensive expertise in high-voltage systems, industrial plant engineering, and electrical infrastructure. With extensive experience in project management and technical leadership, he ensures efficient, safe, and high-quality electrical engineering solutions.
Asset Developer
Comprehensive experience in the development of mechatronic systems, with focus areas in electrical engineering, robotics, DevOps, and system scaling. Complemented by project management expertise and certifications as Project Manager (Level D) and Data Protection Officer.
Education: FH Technikum Vienna (Mechatronics and Robotics Engineering); currently MSc in Innovation and Technology Management.
Asset Developer
Substantive experience in battery development with a focus on BESS and sustainable energy systems. Combines analytical and structured thinking with international academic and practical experience in Sustainable Energy Systems.
Education: MSc Sustainable Energy Systems; BSc Industrial Engineering, Mechanical Engineering.
Asset Developer
Technical training at the Austrian Higher Technical Institute for Renewable Energy, Environment, and Sustainability. Substantive knowledge in electrical engineering, business administration, and project management. Responsible for the preparation and revision of technical CAD drawings and site planning.
Education: HTL Renewable Energy; currently studying Industrial Engineering.
More than 50 combined years of experience in investment banking, M&A, and infrastructure finance, applied to bankable project structures and coordination with capital providers.
Energy systems engineering, mechatronics, and battery technology, combined with algorithm-driven marketing across multiple market channels.
The in-house operations company secures administrative management, maintenance, and compliant continuous operation of the assets after commissioning.
For Blackvolt Energy, the separation between development and ongoing operation is a deliberate design choice. Development teams focus on permitting and realisation; the operations company carries operational responsibility after grid connection.
Blackvolt Energy GmbH is the parent company and is responsible for project development, financing, and strategic steering. The headquarters is located in Vienna.
Blackvolt Operations and Management GmbH is an independent subsidiary that is responsible for the ongoing operation of the storage assets. Operational delivery, including maintenance, servicing, and technical inspections, is executed through leading Tier-1 service partners under internal monitoring and management oversight. The subsidiary is additionally responsible for the administrative and commercial management of the project SPVs and the compliance with all safety standards.
Headquarters Vienna
Währinger Straße 6-8/11
1090 Vienna, Austria
Location Steyr
Upper Austria
The majority owner of Blackvolt Energy is Clarence Capital Partners, an investment company founded by Gregory Green with a focus on infrastructure and energy.
