Yvonne Rankin Constantine is the Interim CFO at BECIS. She is a results-driven, highly energized global finance and business leader with extensive experience across diverse markets, functions, and cultures. Her portfolio includes finance, M&A, business development, supply chain, transformation, projects, and operations. This diverse background has equipped her to tackle many challenges and seize opportunities for innovative and sustainable solutions across the company.

 Yvonne is a member of ACCA and CA ANZ, as well as a certified professional coach. She brings over 20 years of experience in the global energy sector to her role.

Before joining BECIS, Rahul co-founded Sunshot Technologies Pvt. Ltd. in 2010. The company engineered, constructed, and developed on-site solar power plants for large Industrial and Commercial customers and in 2019 became the 3rd largest company in the onsite solar EPC segment in India. In June 2020, Sunshot team was acquired by BECIS. Prior to this Rahul worked with Nokia in sales and marketing.

Rahul has been awarded the ‘Economic Times Young Leaders Award’ and was also featured multiple times as one of India’s 100 Most Powerful Leaders in the Solar Industry.

He completed his graduation in Telecommunication Engineering at R.V. College of Engineering, Bangalore followed by his MBA from the Indian Institute of Management, Ahmedabad.

Ugo is Head of Pricing Strategy & Sales Support. He has over 17 years of experience in the Energy Business spanning from oil &gas production to renewable energy. Ugo started his career in the up-stream oil & gas sector, on- and off-shore operations, patent development and sales for important industry players such as Shlumberger, Welltec, Total and Shell in Europe and West Africa. In 2017, Ugo embraced the emerging energy transition.

Ugo owns MS Degrees from Insa Lyon in mechanical engineering and an executive master from ESCP Europe in Energy Management/corporate finance.

Dionpius Jefferson is the Managing Director of Indonesia. Previously, he was the Deputy CEO of SUN Energy, where he spent 5 years growing the business across commercial, sales, marketing, operations, and licensing aspects.Before SUN Energy, he worked in various industry sectors for over 13 years, from automotive to telco. His roles included business analyst, IT analyst, consulting, corporate strategy, marketing analytics, and project management. He holds a Master of Business Administration from San Jose State University and a Bachelor of Science in Industrial Engineering from Parahyangan Catholic University.

John Ku is Group Head of Asset Management & IT​ at BECIS.  He has 15 years of experience in energy, spanning solar, energy efficiency, and other distributed resources.  He has worked for and with organizations such as Samsung C&T, Pacific Gas & Electric, SP Group, and Vestas Asia Pacific.  John has experience leading strategic and technology transformation projects, helping companies build new capabilities.  John is from the US and has been living in Singapore for the past 6 years.  He holds an MBA from New York University and was a member of the Catherine B. Reynolds Fellowship in Social Entrepreneurship, where he focused on sustainability.

Indrajeet is the Senior Group Head of Business Operations. He brings over 13 years of experience in renewable energy and sustainability to this role. Before joining BECIS, Indrajeet co-founded Sunshot Technologies Pte. Ltd. in 2010. Within a decade, it became the 3rd largest onsite solar Engineering, Procurement, and Construction (EPC) player in India before being acquired by BECIS in June 2020. Indrajeet has worked in operations management across the automobile and retail industries. He holds a degree in Production Engineering from the National Institute of Technology (NIT), Trichy and a Master of Business Administration from the Indian Institute of Management (IIM) in Ahmedabad.

Hally Huang is the Managing Director, China, Vietnam & Cambodia. He brings over 10 years of expertise in renewable energy project development and investments in his past role of Business Development Director of Symbior Solar and OCI China Co. Ltd. He leads the BECIS China team to help local clients reduce their carbon emissions by offering varied energy solutions. He holds a Master of Business Administration from the Cheung Kong Graduate School of Business in China.

Oscar is Group Head of Business Development & Marketing. He has over 20 years of experience in developing and operating distributed energy solutions across South America, Europe, and Asia. He leads up the development of additive solution offerings as well as drive key account management and group-wide sales coordination activities. Oscar comes from Engie Group where he served as Managing Director of Engie China’s Territory and Industry department. He has an EMBA from INSEAD Business School.

Senthilkumar is the Director of Quality (QA/QC) for BECIS. He has more than 26 years of experience in the quality sector. He is proficient in matters related to project quality, ISO implementation and auditing at onshore and offshore construction, manufacturing, fabrication, marine and oil & gas operations. He has worked with companies such as Van Leeuwen, Intevac, Samco, Keppel and in his recent assignment at Exterran, he took control as a Regional Quality Manager, which covered quality related activities in the APAC region.  He holds a master’s degree in Engineering and Management from the University of South Australia (UNISA). He joined us to provide a strong and positive leadership, moreover to promote and adopt the best benchmarked QA/QC practices along with values.

Zhi is the Group Counsel of BECIS. He is a dual-qualified (Australia and Singapore) corporate lawyer based in Singapore. With a background in leading financing and projects transactions, he focuses on the renewable energy sector, specifically in solar and energy solutions. He has significant experience from working in top-tier international law firms, and experience from advising companies across SEA, North Asia and Australia. Zhi holds a double degree in Law and Commerce from the University of Western Australia.

Arnaud Dauvillier is Senior Managing Director (Thailand, Malaysia) and Senior Group Head of Commercial Operations. Arnaud’s career in the energy industry spans more than 25 years, with leadership roles in both Europe and Asia. He is responsible for providing leadership, strategic direction as well as driving the execution of key strategic priorities and developed Energy as a Service business for BECIS China and Thailand. Prior to BECIS, Arnaud served for more than 10 years in China, as CEO for Adenergy and Tera (JV between Total Eren and Aden), COO & Project Director for Engie China, worked for 10 years in Engie Cofely France and in particular led operations and development for the West region of France for Cofely Engie.

Hein was appointed as FMO’s representative to the BECIS board in July 2019. Hein spent 17 years at Unilever in various financial positions, most recently as VP Finance Unilever SEA. During a break in his Unilever career Hein co-founded www.indenpender.nl in 1999 and developed the business to the leading financial comparison site in the Netherlands. After his Unilever career as an advisor he was involved in a number of M&A transactions in Myanmar. In addition he is a member of the Board of Dawn Microfinance Myanmar since 2015 and also holds a Board opposition at Doh Eain (Our Home) Myanmar, a heritage building conservation enterprise since 2018. Hein lives in Bangkok.

Oscar Hernando Carrillo serves as Senior Equity Investment Manager at Siemens Financial Services since 2019, focusing on equity transactions within the energy, mobility, and healthcare sectors across Europe and Southeast Asia. He holds a director position at BECIS since July 2020. Prior to his tenure at Siemens Financial Services, Oscar gained over a decade of experience in Mergers & Acquisitions at Siemens Energy. He holds an MBA in Applied Quantitative Finance from the University of Nuertingen-Geislingen, Germany, and a Master of Science in Business Administration from the University of Muenster, Germany.

Greg serves as the Country Manager & Execution Director at BECIS Philippines. With an extensive 30-year background in the energy sector, including 14 years specifically in the renewable energy industry in the Philippines, Greg brings a wealth of experience to his role. Prior to re-joining BECIS, he led Vector Renewable Energy, a consultancy firm specializing in renewable energy services across the APAC region. Greg also spent 15 years at the Energy Regulatory Commission, where he developed a deep understanding of energy market regulations in the Philippines, focusing on ancillary services, renewable energy, and energy capital projects for transmission and distribution utilities.

Greg holds a degree in Registered Electrical Engineering from the Mapua Institute of Technology, as well as a master’s degree in energy engineering from the University of the Philippines. Additionally, he has completed a Master of Business Administration program.

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Thuan Thanos is a senior expert with more than 5 years of experience in the Renewable Energy Industry, successfully funding for projects totaling over 40 million USD and delivering 60 Mwp projects for solar rooftop projects in Vietnam. Currently, he holds the position of Country Director of BD & MKT at BECIS Vietnam and Cambodia, focusing on the development of solar rooftop and solution projects. Before entering the Energy Industry, Thuan spent 2 years as the General Manager of Oporto Vietnam (Craveable Brands Group) and held senior management positions with over 15 years of experience in Sales & Marketing for major multinational companies in different industries (FMCG, Education) such as British American Tobacco, Abbott, and Wallstreet English.

Thuan holds an Executive MBA granted by the Foreign Trade University (FTU).

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Chetra is Business Development Manager for BECIS Cambodia. She brings over 20 years of experience in finance, digital marketing, and sales from different industries. Her role is to support clients to reach their carbon footprint goal with energy efficiency and some financial saving as a bonus through BECIS’s solutions.

She completed her bachelor’s degree in finance and banking from Phnom Penh International University and her master’s degree from Norton University. 

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Germaine Chow is the Group Head of Human Resources at BECIS, responsible for managing the overall HR function, practices, and processes while driving HR requirements across all countries and business functions.

Germaine has over 20 years of experience in HR in different industries including investment banking, reinsurance, IT software and data centres. Throughout her career, she has worked with organizations of various sizes, from start-ups to multinational corporations in different countries (Hong Kong & Japan) and has gained a deep understanding of the critical role HR plays in driving business success. Germaine holds a bachelor’s degree in Sociology from the University of Windsor, Canada.

Pål Helgesen has 15 years of experience with energy investment in developing countries, including serving on boards of many companies. Formerly, he worked with strategy, acquisitions, and business development at DNV, a technical risk management company with operations in more than 100 countries.

Pål holds a Bachelor’s degree (First Class Honors) in Naval Architecture and Ocean Engineering and an MBA from IESE Business School.

Rob is the General Manager of BECIS in Vietnam and Cambodia. He brings over 17 years of experience in the renewables field with leadership roles across Asia and Europe.

In 2004, he founded Ecosphere Renewables, a UK based company that offered solar and renewable solutions in Europe and Asia. He became the General Manager of Vietnam Solar Power Joint Stock Company (SPUC) in 2017, a joint venture between Ecosphere Renewables and Dragon Capital.

SPUC was one of the first companies in Vietnam to offer commercial, industrial, and institutional (C&I) solar solutions and was acquired by BECIS in 2021.

Rob started his career working for Citibank and has had experience working across London, Milan, and Frankfurt.

He holds a first-class degree in Business and Economics from the University of Westminster in London.

Ms. Chetnakarnkul, Investment Director, Head of Asia Region Office (Bangkok, Thailand) of the Norwegian Investment Fund for Developing Countries (“NORFUND”).

At NORFUND, she founded Norfund’s Asia office and has been responsible for building, leading, and managing Norfund’s investments in Asia. Prior to joining NORFUND, she worked at the International Finance Corporation (IFC), the World Bank Group in Washington D.C.

Ms. Chetnakarnkul holds a Master’s Degree in Arts – Quantitative Methods and Economic Theory; from the Southeast Asia Studies School of Advanced International Studies (SAIS), Johns Hopkins University (Washington D.C.) and a Bachelor’s Degree in Economics (International Program) from Thammasat University, Bangkok. She has also followed the Director Certification Program (DCP 184, Board Training) of the Institute of Directors of Thailand (Bangkok) and a Fintech certification course at the Massachusetts Institute of Technology (MIT).

Ms. Diana Leng has over two decades of executive experience within the Banking, Energy & Technology sectors. She has a proven track record in the areas of treasury, corporate finance, mergers and acquisitions, financial markets, and strategic management. Ms. Leng started her career with ING Group in the Netherlands where she gained experience in banking, insurance, and asset management internationally. As CFO of an international offshore drilling company, she was overall in charge of the finance function, capital, and asset management. As a key member of this management team, she insisted on being a hands-on executive who actively balances the demands of operational excellence and financial risk management in the Energy sector. Most recently she was the COO for a pre-launch Digital Health Platform. It was in this role, Diana gained completely new insights and exposures into a new sector of Healthcare, Health-Tech, and Consumer Market behavior. She successfully grew the company from a small Start-Up to a multi-market, independent, Digital platform across the region. She is passionate about education and mentorship and served as Executive Fellow and Fintech series Lecturer for NUS ACE. Diana holds various independent Board Positions and serves as an advisor to several Start-Ups and entrepreneurs. As CFO of BECIS, Diana is responsible for the Finance, HR, Legal and IT functions. In her free time, she enjoys mentoring young professionals, travelling and photography. She considers keeping up with the curiosity of her two young daughters the most rewarding personal challenge to date.  

Ms. Diana Leng holds a Master of Science in International Business and is a proud Alumna of the School of Business & Economics, Maastricht University. 

Rajesh is responsible to manage the Group’s ES & HS practices and processes and lead our ES and HS management requirements to ensure a sustainable and safe portfolio. This is a full encompassing role with particular emphasis on both internal and external stakeholder management. 

Rajesh has over 25 years of experience in EHSS within the pharmaceutical, energy, biotechnology and Media industry backgrounds with companies like GE Power, Novartis, AstraZeneca etc . In his last assignment with Netflix, he covered the APAC region and managed compliance, EHS matters, risk assessments & audits.  He has experience in renewable energy when he was at GE Power, he liaised with global energy leaders and worked on projects related to reduction of greenhouse gas emissions, environment, and sustainability on the EHS matters. He was also handling the sustainability reporting and the social impact in his previous role.

Rajesh has Bachelor of Engineering from Bangalore University, Diploma in workplace safety and health from Singapore and currently pursuing MBA from USA.

TC Kundi is the Founder and Board Member of Berkeley Energy Limited. He has over 25 years of experience in the renewable energy sector. Previously the Head of Engineering for Hanson Quarry Products, Europe, he was responsible for starting the energy division. He is also the ex-CEO of the Energy Division of the Waste Recycling Group (1994 to 2005), and was responsible for building the largest independent renewable energy business with 400+ employees in UK. He has a strong academic background in Mechanical Engineering and Business Administration.

Pedro Valle e Azevedo, is a Board Member of BECIS, having joined the company in July 2020. He is an Investment Director at Siemens Financial Services, with more than 10 years of experience in the renewable energy and infrastructure sectors. Mr Valle e Azevedo has extensive experience in both emerging and developed markets. In his role at Siemens Financial Services, he leads and executes investments in the energy, smart infrastructure, and digital industries. Mr. Valle e Azevedo holds an MSc in Investment Management from Cass Business School in London, United Kingdom and an MBA from Friedrich-Alexander-Universität (FAU) in Germany.

Eren Ergin is the CEO of BECIS. He has 20+ years of experience in the energy industry creating innovative sustainable solutions to improve operational performance and efficiency, developing, and implementing digitization strategies and leading business operations. Prior to joining BECIS, he served as Vice President & General Manager of Honeywell’s Renewable Energy business, Founder & Managing Director at Calterra Energy and General Manager at TAS Energy EMEA region. Eren started his career at GE Energy and served in various roles in engineering, project management, business development and sales for GE Energy’s gas turbine products and services businesses. Eren holds a Bachelor of Science in Mechanical Engineering from Duke University.

Jonathan Payne is a Managing Director for Berkeley Energy, with current responsibility for the Asian investments, including BECIS.  Jonathan joined Berkeley in 2015 and has worked across several functions covering financial management, operations and asset management. He is a member of the investment committees for Berkeley Energy managed funds of AREF, AREF 2, and REAF II.

Mr. Payne is a Chartered Management accountant with over 20+ years’ experience of driving performance in operating businesses. He has extensive experience in M&A activity, financial control, reporting, process and operational improvement, strategic planning, system implementation, and building strong teams. Mr. Payne has held senior finance roles in both the UK and Australia, including as Financial Controller for WRG developing the renewable energy business with TC Kundi. Mr. Payne was also part of the ultimate spin-off of that business into Infinis Plc and helped shape the continued growth.

Hannu Ikävalko is the Bioenergy Chief Operating Officer of BECIS. Prior to joining BECIS, Hannu co-founded Tasma Bioenergy, a company that delivers sustainable biomass-based energy to industrial clients in Southeast Asia, which was acquired by BECIS. He brings over 20 years of experience in biomass, pulp and paper businesses and has held senior operational roles across corporate development, finance, sales, and supply chain management. He holds a Master of Science from the Helsinki University of Technology in Finland, and a Master of Business Administration (with Honours) from the IE Business School in Spain.

Neil Allen is the Country Manager for BECIS in Cambodia. He brings close to 15 years of knowledge and expertise in various technologies such as biogas, biomass, waste to energy, and combined heat and power solutions. Prior to joining BECIS, Neil was the General Manager of Operations at SUEZ Asia, where he completed the operations management, build-up and successful handover of the first waste to energy plant in Thailand. Neil has extensive experience in the energy sector across service and electrical engineering roles working with Kantor Energy, Veolia Energy and EON among others. He holds a Higher National Diploma in Electrical and Electronic Engineering from Teeside University in the United Kingdom.