Historically, New Zealand has relied on coal as its main fuel for development. No more.The country’s share of renewable electricity generation, already the fourth largest in the world, is now close to 80 percent. With the quick rise in geothermal generation, New Zeland is well on its way to achieving its ambitious goal of having 90 percent of its electricity supply generated by renewables by 2025. Meanwhile, Vector, the country’s largest network operator, is heavily promoting Tesla’s Powerwall battery storage systems for solar energy to the home market.