Telstra Ventures, a venture capital firm, led a $15m funding round in OpenSolar, a software developer. “We started OpenSolar in Australia which is the most advanced solar market in the world, where you pay an extremely low price per watt and get your system installed within one to three weeks. With a leading position now in the Australian market, we’ve introduced much of that speed and efficiency to the rest of the world through our software,” Andrew Birch, OpenSolar Co-founder and CEO.