First Up - The Podcast, Tuesday 29 July

On today's First Up pod: Mike Casey from Rewiring Aotearoa explains how we can use our hydro lakes as energy batteries, if we boost rooftop solar; Weather Watch head forecaster Philip Duncan has the latest on the severe wind and heavy rain that's heading our way and the Minister of Finance Nicola Willis explains why the government's scrapping PayWave surcharges for customers. First Up - Voice of the Nathan!