About us
Sun Exchange is powering progress in Africa by delivering world-class solar solutions to high-impact businesses and organisations.
A trusted leader
in solar
We do our part by making world-class solar power and energy storage accessible, affordable and simple for schools, businesses, farms, retirement homes and other high-impact organisations.
Established in Cape Town in 2015, Sun Exchange is a recognised solar industry leader having deployed one of the largest fleets of commercial solar projects across South Africa.
Meet the Team
Our leadership team has a proven track record and deep, multidisciplinary expertise, enabling us to deliver fully funded, best-in-class solutions that solve our customers energy needs.
Saul is an accomplished leader with a 20+ year track record of successfully raising funds and scaling businesses. He joined Sun Exchange as CFO in 2017 and was appointed CEO in 2023. Previously, he spent 15 years in Silicon Valley guiding startups through critical growth phases, and has also led and built finance teams at multi-million dollar companies in the USA and South Africa.
Saul Wainwright
Chief Executive Officer
Lisa has an entrepreneurial spirit and has been a founder or co-founder in four businesses. As the COO, Lisa is responsible for strategy implementation, process optimisation, coaching the management team and developing talent at Sun Exchange.
Lisa Lyhne
Chief Operations Officer
Louis has over 30 years experience in business development and senior commercial management in the energy sector, specialising in the sustainable energy space. Louis is responsible for commercial business development including tactical development of market verticals, the development of the project pipeline, strategic funding partnerships, and stakeholder management.
Louis Serfontein
Head of Business Development
Dermott is an experienced solar energy professional with a proven history of working in the renewables industry for over 10 years. Dermott oversees solar development design and implementation as well as O&M programmes at Sun Exchange.
Dermott Murphy
Head of Solar Engineering
Retha is an experienced Finance Director with a demonstrated history of working in the technology industry. Retha is skilled in International Financial Reporting Standards (IFRS), Consolidation, Managerial Finance, Payroll, and Account Reconciliation, and plays a vital role in managing the finances of Sun Exchange.
Retha Meyer
Finance Director
Saul Wainwright
Chief Executive Officer
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Saul is an accomplished leader with a 20+ year track record of successfully raising funds and scaling businesses. He joined Sun Exchange as CFO in 2017 and was appointed CEO in 2023. Previously, he spent 15 years in Silicon Valley guiding startups through critical growth phases, and has also led and built finance teams at multi-million dollar companies in the USA and South Africa.
Lisa Lyhne
Chief Operations Officer
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Lisa has an entrepreneurial spirit and has been a founder or co-founder in four businesses. As the COO, Lisa is responsible for strategy implementation, process optimisation, coaching the management team and developing talent at Sun Exchange.
Louis Serfontein
Head of Business Development
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Louis has over 30 years experience in business development and senior commercial management in the energy sector, specialising in the sustainable energy space. Louis is responsible for commercial business development including tactical development of market verticals, the development of the project pipeline, strategic funding partnerships, and stakeholder management.
Dermott Murphy
Head of Solar Engineering
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Dermott is an experienced solar energy professional with a proven history of working in the renewables industry for over 10 years. Dermott oversees solar development design and implementation as well as O&M programmes at Sun Exchange.
Retha Meyer
Finance Director
Learn more
Retha is an experienced Finance Director with a demonstrated history of working in the technology industry. Retha is skilled in International Financial Reporting Standards (IFRS), Consolidation, Managerial Finance, Payroll, and Account Reconciliation, and plays a vital role in managing the finances of Sun Exchange.
Job Openings
Join a team making a positive impact with solar power.
Solar Construction Project Manager
Sun Exchange is looking for a Solar Construction Project Manager to join our team. The primary function of this role is to ensure the smooth functioning of all solar projects under construction.
Operations and Maintenance Manager
Sun Exchange is looking for a Cape Town based O&M Manager. The primary function of this role is to ensure the effective management of O&M activities across Sun Exchange operational assets.