Rokas Peciulaitis Lithuania
Founder & Managing Partner
Rokas is a founder and managing partner at Contrarian Ventures. With a passion for building communities, Rokas believes deeply in the power of networks and collaboration. Rokas has led and was the first institutional check in a range of leading climate tech companies, including PVcase, BeZero Carbon, and Ember to name a few.
He dedicates significant time to enhancing the firm’s platform and has co-founded and spearheaded key climate tech ecosystem initiatives such as the Energy Tech Summit, Climate 50, Climate Brick and the WinterFest European edition.
He began his career as an inflation trader at Bank of America Merrill Lynch before transitioning to entrepreneurship and early-stage climate investing in 2016.
Outside of his professional life, he is committed to building social capital. He serves on multiple non-profit boards such as Vilnius University Endowment (Board of Trustees), and Rupert Art Center (Board of Trustees). He is also the Co-founder and Chairman of the Origins Foundation, producing a docuseries about Litvaks and their cultural legacy.
Originally from Lithuania, Rokas holds an M.A. in Economics from the University of Glasgow and studied at the University of California, Santa Barbara and Harvard Business School (Executive Program in PE & VC). He is a Kauffman Fellow (Class 25).
Portfolio
Starflow
Norway
Starflow is designing seamless, beautiful, and intelligent energy systems for the home.
PVcase
Lithuania
PVcase is #1 end-to-end solar development platform — uniting site selection, design, and yield optimization to deliver faster, more precise solar projects worldwide.
Ember
UK
Ember is building the UK’s first fully electric, zero-emission coach network, using a full-stack platform to deliver faster, cheaper, and cleaner public transport.
Marvin
Israel
Marvin helps companies comply with regulations, mitigate risk, and benefit from sustainable operational excellence through AI-driven supply chain solutions.
BeZero Carbon
UK
The independent carbon ratings agency. Its ratings and risk products equip world-leading organisations with the knowledge, tools and confidence to make better climate decisions.
Chooose
Norway
Chooose enables aviation and freight customers to build, operate and scale their lower carbon fuel programs.
Altrove
France
Altrove designs, synthesizes, and manufactures alternatives to critical materials at scale.
Metafuels
Switzerland
Metafuels is commercialising a breakthrough technology for the production of cost-competitive, sustainable aviation fuel.
Delfos
Spain
Delfos Energy uses AI to transform operational data into predictive insights, helping energy operators prevent failures, cut downtime, and maximise asset performance at scale.
H2Pro
Israel
H2Pro is commercializing breakthrough decoupled electrolysis technology for affordable, scalable green hydrogen production.
Eliq
Sweden
Eliq’s cloud platform uses data and AI to deliver personalized energy insights, helping providers engage customers and drive loyalty.
Switchee
UK
Switchee’s IoT technology provides real-time data and actionable insights to social housing landlords, preventing issues such as damp and mould, and delivering better outcomes for residents.
SatVu
UK
SatVu captures high-resolution thermal data from space for a safer and more sustainable Earth.
Urbio
Switzerland
Urbio’s AI platform streamlines district heating network planning, helping cities reduce emissions with efficient, future-ready energy systems.
Hepta
Estonia
Hepta’s AI-powered platform analyses grid data to detect and prioritise faults, enabling faster repairs, fewer outages, and more resilient infrastructure.
IniOn Software
Lithuania
Inion delivers advanced analytics to optimise solar and wind plant performance, from rooftop PV to utility-scale assets.