'New Zealand can't afford not to electrify,' says Q&A's Jack Tame in the introduction to a story about Rewiring Aotearoa's new paper Investing in Tomorrow. He talks to Dr Saul Griffith about the savings at a household level, the $29 million a day electrification opportunity for the country as a whole, the economic slam dunk of rooftop solar and why the Government should be looking to give favourable finance to customers who can become part of our energy infrastructure.