Our Team
We are a highly qualified team of over 200 professionals with backgrounds in the chemical industry, waste and recycling management operations, alternative technologies development, project finance and regulatory markets.
Carlos Monreal
Founder and Chief Executive Officer
Olga Olmedo
Chief Financial Officer
Charlotte Holder
General Counsel
Alberto Medina
Chief Operations Officer
Hernan Calvo
Vice President of Sales and Corporate Development
Daniel De Sousa
Vice President of Digital Technologies
Christopher Strivens
Vice President Product Delivery
Susan Fitzsimons
Head of Communications
Carlos Monreal
Founder and Chief Executive Officer
Carlos Monreal is the Founder and CEO of Plastic Energy, one of the world’s leading chemical recycling companies, with industrial plants in operation for over a decade. He is an engineer by training and has been a serial entrepreneur for more than 35 years, focusing on developing disruptive technologies and innovative solutions in the sustainability sector. He has founded a wide range of companies whose activities include the development of precision farming and machine control of fleet management, as well as an EPC company on renewable energy. Carlos is the founder and chairman of Circular Resources and has served on the board of Green Dot Global, focusing on recyclability and sustainability of packaging. Carlos is also a founding partner of Radikal Capital, a company which identifies high-growth ventures and transformative projects in sustainability, circularity and resource efficiency.
Olga Olmedo
Chief Financial Officer
Olga Olmedo is Plastic Energy’s Chief Financial Officer and brings over 20 years of international finance experience across the renewable energy, infrastructure, and industrial sectors. She has been with Plastic Energy since 2022, where she has played a key role in strengthening the company's finance function, with a particular focus on finance operations, manufacturing, business performance, and supporting the company's growth and investment readiness. As CFO, Olga leads Plastic Energy's finance function, overseeing financial planning and analysis, reporting, treasury, tax, business partnering, and corporate governance. She works closely with the executive team to ensure finance supports strategic decision-making, operational excellence, and the successful execution of the company's growth strategy. Throughout her career, Olga has led finance transformation programmes, ERP implementations, process optimisation initiatives, and high-performing international finance teams, helping organisations scale, while maintaining strong financial governence.
Charlotte Holder
General Counsel
Charlotte is Plastic Energy’s General Counsel, responsible for the day-to-day legal aspects of the business, and has been with Plastic Energy since 2021. Prior to joining Plastic Energy, she worked in private practice at CMS, advising on corporate transactions with a focus on deals in the infrastructure and renewables sectors. She has lived and worked in London and Singapore. Charlotte holds a BA in English Literature from Durham University and qualified as a solicitor in England and Wales in 2014.
Alberto Medina
Chief Operations Officer
Alberto Medina is Plastic Energy’s Chief Operations Officer and previously served as the company’s Chief Operations Readiness Officer. He has over 25 years of experience across production operations, maintenance, health and safety, and business management duties at large industrial facilities. His career began in the oil and gas industry, before transferring into the cleantech sector. Outside of his role with Plastic Energy he supports Seville University with academic programmes, including their Maintenance Master course and the orientation programme for recent graduates from Seville’s College of Engineers. Alberto holds an MBA and Masters in Engineering from Seville University. He also holds two additional Masters in Health and Safety; the first focused on industrial safety, and a second on Industrial Health, Applied Ergonomics and Psycho-sociology at Work.
Hernan Calvo
Vice President of Sales and Corporate Development
Hernan Calvo is Plastic Energy’s Vice President of Sales & Corporate Development and has been with the company since 2019. He has more than 30 years of international executive and business development experience, having held senior leadership positions including CEO, Managing Director and Board Director across the transport, maritime, tourism, hospitality, healthcare and energy transition sectors. Throughout his career, Hernan has led business development, market expansion, start-up projects and strategic initiatives across Europe, Latin America, Africa, the United States and the Caribbean, building extensive experience in identifying, structuring and executing opportunities across diverse international markets. At Plastic Energy, he focuses on sales, corporate development, strategic projects and partnerships, supporting the company’s commercial growth and international expansion within the circular economy. Hernan holds a degree in Management and Business Administration and an MBA in Finance.
Daniel De Sousa
Vice President of Digital Technologies
Daniel de Sousa is Plastic Energy’s Vice President of Digital Technologies and has been with the company since 2018. He has over 20 years of experience in control automation, IT infrastructure, and operational technology, spanning roles across multiple industries, including recycling, oil and gas, and manufacturing. During his time at Plastic Energy, Daniel has grown and led a multidisciplinary team, delivering cutting-edge solutions in automation, network security, data analytics, and digital transformation. Previously, he held senior positions at ASR Group and Tate & Lyle, where he spearheaded global EC&I strategies, regulatory compliance, and advanced process control systems. Daniel holds a Bachelor of Electrical and Electronic Engineering (with Honours) from the University of Canterbury and is a Chartered Engineer with IET.
Christopher Strivens
Vice President Product Delivery
Christopher serves as Plastic Energy’s Vice President Product Delivery, leading the team responsible for delivering new projects and partnerships. Previously, he held key roles as the company’s Head of Technology Development and Head of Engineering. He brings over 17 years of experience in industrial engineering, specialising in product development and delivery across a range of sectors, including waste management, water treatment and petrochemicals. He is a Chartered Environmentalist, Chartered Engineer, and Chartered Resource and Waste Manager. He holds a Bachelor of Science degree in Chemical Engineering from the University of the Witwatersrand in South Africa.
Susan Fitzsimons
Head of Communications
Susan has 13 years of experience in the marketing and communications field, and 8 years of experience working in the sustainability field. In her role as Head of Communications at Plastic Energy, she leads on events, PR and media relations, internal communications, social media and branding and content creation, to showcase the company's mission to reduce plastic waste and plastic pollution. Throughout her career, Susan has focused on events, digital marketing, branding, and communications for companies across the charity, legal, advertising, and sustainability sectors, in both the US and UK. Before joining Plastic Energy in 2020, Susan worked for London-based sustainability consultancy, the Carbon Trust, and led marketing and comms for a programme for small businesses to become more sustainable, as well as led on marketing for product carbon footprint labelling clients. Susan holds a B.A. in Communications and Social Science from the University of Central Florida, and an LL.M. in International Human Rights Law from the National University of Ireland, Galway.
