ATA member profile: Making sinewaves in Australia

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Long-time ATA member and software engineer Rod Scott continues to expand the work of Selectronic, his family business which 35 years ago created Australia’s first inverter. He talks to Kulja Coulston.

The success of the renewable energy industry has often tracked along a “sinewave sales curve”, according to Rod Scott, the products and business manager of inverter manufacturer Selectronic. “It’s standing on its own feet more now, but there were times when government program early announcements could dry up business for five months at a time,” he says of the ‘boom and bust’ cycle that has typified the renewable sector in Australia.

Together with his brother Ken, Rod Scott is continuing the work of his pioneering family business which has been part of the local industry from the beginning. Selectronic produced their first inverter in 1981: “It was a 360 watt DC to AC square wave inverter,” explains Rod. “We started small and it grew from there.” In 1990 Selectronic developed one of the earliest model sinewave inverters.

“It was then that our bigger models started to come out with energy-management functionality. It was all off-grid back then,with Australia being such a sparse country—storage for on-grid systems would have been a very strange concept!” It was in the early 2000s when they developed their first grid-interactive inverter, as that side of the market started to take off.

Rod’s parents established Selectronic in 1964 as a contract manufacturing business and ran it out of the Scotts’ backyard bungalow in Boronia, Victoria, before moving into a factory. The company cut its teeth custom-making transformers and inductors for the local electronics industry before launching its own electronics products division. Decades later, Selectronic continues to manufacture products locally, when most manufacturing has moved offshore.

“We were one of the first to make inverters in Australia, and we might also be one of the last.” Employing around 35 to 40 staff at its Chirnside Park factory in Victoria, Selectronic indirectly employs another 100 people in Australia through its supply chain, and will soon open an international office in Johannesburg. “We can’t get everything made here, particularly the specialist electronics, but we support local if we can, as it gives us flexibility and control over the quality of the product.”

Research and development has underpinned the company’s success for half a century, explains Rod: “Our future products look like what our customers demand, and it’s always been that way. When we developed the SP PRO in 2008, we already had 28 years of off-grid experience.” Selectronic’s continued commitment to the traditional offgrid market is also paying off, as the flexibility and reliability of those systems is relevant to the growing solar hybrid market. A few years ago a German company, KACO New Energy, rebadged Selectronic’s 5 kW SP PRO under their own label.

Rod has been an active ATA member and committed advertiser in ReNew. He is also personally committed to renewable technology at home, and is running off a 5 kW SP PRO with about 2.5 kW of solar photovoltaic panels. At a recent party none of his guests noticed the suburb-wide power outage: “I had to take everyone out onto the street before they believed me that we were the only ones still with power.”

This member profile is published in ReNew 136. Buy your copy here.

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