Powering Renewable Growth in Poland

We collaborate with international investors to develop, structure, and optimize renewable energy projects across the Polish market.

Raen Sp. z o.o.
We are a renewable energy development and advisory company operating in Poland. We support international partners throughout the entire lifecycle of RES projects, including early-stage development, permitting to financing, construction readiness, and operational optimization.
Our core management team is experienced in working with foreign investors and meeting their project management and service quality requirements while operating within the Polish context, including its cultural, legal, and business conditions. Our team has decades of combined experience in wind and solar energy, engineering, project finance, and international business. We have contributed to notable photovoltaic and wind projects in Poland and actively support M&A processes throughout the renewable energy value chain.

We aspire to grow alongside our partners, evolving from development specialists into an integrated renewable energy producer and PPA supplier. Our goal is to minimize risk and speed up investments in clean energy in Poland. 

Through the "Getting Things Done" philosophy, we transform complex renewable projects into executable, profitable realities.

Investment Process Optimization for RES Projects in Poland

We support investors in optimizing the entire investment process for renewable energy projects in Poland. From early-stage structuring and permitting to coordination and execution support, we streamline development pathways, reduce risk, improve timelines, and enhance overall project feasibility and efficiency.

Energy Advisory & Production and Consumption Analysis

We provide strategic energy advisory services and detailed production and consumption analyses for energy producers and consumers. Our services support investment decisions, operational optimization, cost efficiency, and long-term energy strategy planning based on data-driven insights and market expertise.

O&M Services for Operational RES Installations in Poland

We provide comprehensive operations and maintenance services for renewable energy installations across Poland. Through proactive monitoring, preventive maintenance, and rapid response to operational challenges, our approach ensures technical reliability, optimal performance, and long-term asset value protection.


Adam Guz

C.E.O.

Founder and CEO of RAEN Sp. z o.o., operating in the renewable energy sector, completed the reverse takeover of RAEN S.A. (WSE main market) in 2023. Former CFO across energy, logistics, and e-commerce businesses, leading profitability improvements, ERP/BI implementations, strategic repositioning, and large-scale renewable investment projects, including Poland’s largest photovoltaic plant (300 MW). Corporate finance advisor with experience in M&A, MBO/LBO, and 14 IPOs on the Warsaw Stock Exchange. Former Business Angel, author of two business novels, and developer of proprietary financial reporting and planning tools for portfolio companies.

Maciej Zieliński

C.F.O.

Corporate finance advisor supporting entrepreneurs in capital raising and M&A transactions, with a background in corporate and investment banking and experience in Polish and international investment funds. Focused on helping businesses scale and improve economic efficiency, advising companies at every stage of development. Holds an MBA and advanced degrees in economics, and serves as an academic lecturer in behavioral and international economics. Combines practical business experience with academic expertise to deliver pragmatic, effective solutions.

Mariusz Rybak

C.T.O.

Electrical engineer with over 16 years of experience in renewable energy, delivering wind and photovoltaic projects from permitting and grid connection through construction and commissioning. Has contributed to more than 100 projects and holds unlimited design licenses in electrical and power networks and installations. Graduate of Lodz University of Technology in Electrical Engineering with postgraduate studies in business management. As Chief Engineer at RAEN, responsible for technical oversight, engineering optimization, and investment support across all project stages.

David Meister

Partner - Head of Investor Relations

Strategy and Marketing Director with 20+ years of international experience across the US, CEE, and Asia. Held senior leadership roles at TWA, Lowe Lintas GGK, Leo Burnett, DDB, and Tribal DDB, managing global brands including IKEA, McDonald’s, Volkswagen, Heineken and Vodafone, delivering award-winning campaigns and significant business growth. Entered renewables through US-based Anaerobic Digestors and Renewable Natural Gas, gaining experience in RIN, LCFS and RFS markets. Responsible for strategy, communication, investor outreach, and development of biogas and green methanol projects in Poland and the United States.

Vaughn Buntain

Active in the European renewable sector since 2007 as project investment advisor raising capital for utility scale, solar PV projects. Most recently facilitated the investment process for 29 solar projects (6 GW) in Portugal. Former management consultant in New York City with a focus on frontline manager productivity. Cross-cultural, relationship manager active in supporting the interface between development and finance. Multi-lingual, fluent in English, French, German, Spanish and Italian with a keen awareness and understanding of people, markets and cultures.

Peter Richards

Active in the renewable energy sector since 2004, contributing to the establishment of REEEP.org and supporting project development and financing across Central Europe. Secured €6 million for a biomass cogeneration project in Austria and €5 million for Continental Wind Partners in Romania, and advised Neste on biofuel feedstocks for Sustainable Aviation Fuels as well as USTDA on renewable energy initiatives in North Africa. Joined RAEN in 2023 to drive BESS investment and attract foreign capital to the Polish RES market. Brings experience across the full renewable energy value chain and currently leads M&A activities within RAEN’s Advisory team.

Jorg Schweinfurth

Active in international real estate and renewable energy development since 2000, with transactions exceeding €1.3 billion. Led major advisory and development mandates, ranging from participation in the Potsdamer Platz redevelopment for DaimlerChrysler to large-scale residential projects, including sales to Allianz. Founder of Greenvolt Trading and Greenvolt Investec UK, structuring and executing sales of 600+ MW of renewable projects across key European markets, working with counterparties such as BayWa r.e., E.ON, RWE and Allianz Climate Solutions. Operates at the interface of development and finance across Europe.

Tomasz Mikulski

Graduate of Spatial Management at the University of Gdańsk, specializing in GIS and spatial analysis, with a strong interest in the history of cartography. Lecturer at the University of Gdańsk, teaching spatial planning methods and land-use analysis. His academic work focuses on housing environments, the social production of urban space, and spatial segregation. Joined RAEN in mid-2024, supporting renewable energy projects in the area of spatial development, including the application of GIS technologies for advanced analyses and site selection assessments.

  • Krakowskie Przedmieście 13
  • 00-071 Warszawa, Poland

    contact@raen.pl