Every 35 minutes solarZero installs a new residential solar system. It plans to invest $1 billion in new solar and battery systems over the next decade and already has 12,000 installations. It made headlines this time last year when it was acquired by Blackrock, the world’s largest investors. And in September just gone, the government-owned NZ Green Investment Finance invested $80m alongside two other funds. In other words, solarZero is on the march. The 15 year dream of solar enthusiast Andrew Booth is now mainstream.. How does it work, why is it attracting so much capital, and how does it reconcile being owned by one of the largest coal and fossil fuel investors in the world?

Vincent spoke to chief executive Matt Ward.