About KRD Renewables
Independent Technical Advisors for Energy & Infrastructure Investments
Independent advice. Practical experience. Better project decisions.
Since 2011, KRD Renewables has supported investors, lenders, developers, IPPs and asset owners across the renewable energy sector. Our role is simple: provide independent technical insight that helps clients understand risk, make informed decisions and deliver stronger projects.
KRD at a Glance
Years of renewable energy experience
GW of projects advised
Projects & installations supported
Core technologies. Solar PV, BESS & Wind.
Our Story
2011
KRD Global Group is founded in Poland.
Oscar Charro & Sergio Cardamas establish the company, initially focused on the solar PV and renewable energy sector.
2013
European Expansion.
International partnerships expand KRD’s presence across the European solar PV supply chain.
2014
Growing in Poland.
KRD strengthens its position in the Polish utility-scale solar market.
2019
Innovation & R&D.
KRD joins the Eurostars-funded PV-SolAir international R&D project.
2021
10 years – 2.5+ GW
KRD celebrates its tenth anniversary with more than 2.5 GW of renewable energy projects supported worldwide.
2022
Zwartowo Solar Park.
KRD serves as technical advisor for the landmark 290 MWp Zwartowo Solar Park in Poland.
2025
8+ GW Technical Due Diligence.
KRD’s advisory experience continues to grow across more than 20 countries, spanning Solar PV, Wind and BESS.
2026
KRD Renewables.
KRD celebrates its 15th anniversary and rebrands as KRD Renewables, reflecting a sharper focus on independent technical advisory for renewable energy and power-intensive infrastructure investments.
What Defines KRD
INDEPENDENT
Objective, technical advice without technology, EPC or supplier bias.
DECISION-FOCUSED
Technical insight translated into practical recommendations for investment, financing and project development decisions.
EXPERIENCED
15 years of renewable energy experience across developing and operational assets
Senior Leadership
KRD is led by its two co-founders, whose complementary experience spans renewable energy engineering, manufacturing, procurement, project development, investment assessment and independent technical advisory. Their combined backgrounds reflect KRD’s evolution from the European solar industry to today’s utility-scale Solar PV, Wind and BESS markets.
Oscar Charro
Co-Founder & Managing Director
Oscar Charro has more than 20 years of experience in renewable energy engineering, manufacturing, project development, investment and technical advisory. He co-founded KRD in Poland in 2011, following an early career in renewable energy engineering and the development and management of industrial-scale solar cell and module manufacturing at Pevafersa in Spain.
He subsequently established DNV’s Solar PV activity in Poland, serving as Technical Lead on due diligence assignments covering more than 2.5 GW of projects across Poland and neighbouring markets. During this period, he also worked as Senior Business Development Consultant EMEA at Canadian Solar, contributing to the origination, acquisition and negotiation of transactions involving more than 1 GW of Solar PV projects in Poland.
Oscar later served as interim Director Solar and Storage Europe at RWE Renewables, overseeing activities across multiple European markets and contributing to the development and investment approval of utility-scale Solar PV and energy storage portfolios.
At KRD, Oscar combines technical, transactional and development expertise to advise investors, lenders and developers on Solar PV, BESS and Wind projects, with particular emphasis on technical due diligence, project bankability, M&A and the Polish and Central European energy markets.
He is also an expert at the PSME Competence Centre, contributing practical industry experience in energy storage, battery technologies and Poland’s energy transition.
AREAS OF EXPERTISE:
Solar PV · BESS · Wind · Technical Due Diligence · M&A · Project Bankability · Poland & CEE
Sergio Cardamas
Co-Founder & Board Member
Sergio Cardamas has more than 20 years of experience in renewable energy, combining business leadership, industrial and commercial expertise with technical advisory, investment assessment and international energy innovation.
He co-founded KRD in Poland in 2011 after working at Pevafersa in Spain, where he was responsible for procurement and cost control for the company’s solar cell and module manufacturing facilities. His subsequent experience includes coordinating solar module manufacturing with Polish manufacturers and managing procurement assignments for SunEdison and Solarplicity in the UK.
Since KRD’s establishment, Sergio has played a central role in managing and developing the company, overseeing business operations, client relationships, commercial strategy and the delivery of renewable energy advisory assignments. His involvement spans Technical Due Diligence and Lender’s Technical Advisory (LTA), supporting investors, lenders and developers in assessing project bankability, technical and commercial risks, CAPEX and OPEX assumptions, contractual exposure and the technical foundations of investment and financing decisions.
His experience also extends to international renewable energy innovation, including publicly funded programmes involving energy storage, microgrids and grid stabilisation. This broader perspective complements his work at KRD, particularly in assessing emerging technologies and their technical and commercial viability.
He holds a Business degree and an MBA and has participated twice in the Ignite programme at Cambridge Judge Business School.
AREAS OF EXPERTISE:
Company Leadership & Strategy · Technical Due Diligence · Lender’s Technical Advisory · Project Bankability · Investment Risk Assessment · Solar PV & BESS
Recent Project Highlights
