Our team members are passionate about self-improvement and  living sustainably – both in their personal and professional lives.

We undertake regular professional development to keep ourselves abreast of the most current information and technologies and readily share this information within our networks and with our clients.

We can regularly be seen volunteering with groups such as WOMAD, Transition Gawler, KESAB, Apex, and OzHarvest.

Tom Brdanovic
Tom Brdanovic
Tom Brdanovic is a CEC-accredited Solar PV designer and off-grid installer with a
background in engineering and technical design. As passionate as he is about renewable energy, he knows that reducing your energy use is wiser than just making your own. Developing smarter ways to conduct business, saving energy and increasing productivity, is Tom’s specialty.

Tom’s background in technical production means that he not only identifies solutions, but follows through with design, procurement, and implementation assistance. His management and organisational oversight ensures a consistent, excellent result for all clients.

Rachel Brdanovic
Rachel Brdanovic
Rachel Brdanovic has provided energy auditing solutions for her clients over the past eight years. She specialises in identifying opportunities and creating sustainable change in businesses and organisations. Her Master of Sustainability degree provides a broad understanding of many sustainability based issues, and as a Certified Measurement and Verification Professional (CMVP), Rachel collects and analyses data to assist clients to make informed decisions relating to best practice equipment upgrades and purchases.

As a qualified trainer and Living Smart facilitator, Rachel also provides interesting and engaging presentations to management and staff.

Heather Smith
Heather Smith
Heather Smith is a consulting engineer, policy and strategy adviser with a strong technical background in climate change, energy advice and the design of alternative energy systems. As a graduate of the Company Directors Course, and a Certified Measurement and Verification Professional (CMVP), Heather provides a high level of technical knowledge and integrated thinking. She specialises in finding innovative engineering solutions to energy problems. With strong skills in influencing and connecting agendas, she has a keen interest in harnessing the power of markets and communities to deliver sustainable futures.
Sara Loechel
Sara Loechel
Sara Loechel specialises in event management and business administration. She has coordinated a variety of projects and key events including the Gawler Sustainable Living Festival Project in 2015 and 2016. She also has extensive experience in the writing of grant applications, as well as their implementation and acquittal. She provides work health and safety and quality assurance to ensure consistent safe work practice at Tandem.
Angus Groskreutz
Angus Groskreutz
Angus Groskreutz has a background in engineering with a B.Eng (Mechanical and Sustainable Energy)(Hons.), and has a wide range of knowledge surrounding renewable energy technologies and energy efficient practices. He focuses on finding well-rounded solutions for our clients’ energy management needs, whether it be efficient energy usage, renewable energy production, or a combination of both.
Raffaele Stomaci
Raffaele Stomaci
Raffaele Stomaci has previously worked as a small business specialist for ANZ Bank and is also a Certified Microsoft Small Business Specialist. At Tandem Energy he specialises in developing energy efficient IT solutions and other office upgrades. He has an excellent understanding of the options available to office-based businesses to improve their energy efficiency in IT upgrades and behaviours.
Lynda Curtis
Lynda Curtis
Lynda Curtis has expertise in managing both compliance and behavioural change in large organisations. She is an experienced trainer and Living Smart facilitator, and has a good understanding of a wide range of sustainability topics. Her skills in developing action plans and engaging with staff empowers organisations to develop ongoing systematic changes to provide ongoing savings.