In a new twist on the "sharing economy", they have developed technology that monitors solar power usage by individual tenants in real time, bills them for the amount they use and remits the payments to the landlord.
The just-launched Digital Solar service can offer solar power to tenants for about 9¢ a kilowatt hour - compared with peak tariffs of 48-52¢ in NSW and Queensland - and still leave a margin for the landlord to repay his investment in solar panels.
Normally, landlords and tenants have little incentive to invest in solar panels. Small and medium businesses are another potential market, and there are more than 100 million rental homes in Japan, Germany, Britain and North America.
"Once we have got the technology into homes we can start delivering other services over it. There is no limit to what we can do," Mr Barnes said.
The system can be used to deliver other services - such as monitoring and maintaining swimming pools and airconditioners, or managing battery storage systems to help people get more value from solar panels.
First they aim to get the platform humming in Australia - where solar rooftop panels are on 1.4 million roofs or almost 25 per cent of detached households, the world's highest. Then they plan to offer it to the rest of the world.
Mr Barnes and Mr Mrakas say the company will need at least $20 million in new capital to achieve its goals and are considering a public float late this year or early next.
Their company, Matter, has previously raised $5 million from AGL Energy and $3 million from wealthy investors including venture capital firm Investible. Stockbroker Bell Potter is advising the company on the float.
Craig Swanger, the chief executive of Investible, said his investors were attracted by Matter's "simple solution to a complex problem with global applications."
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