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RNZ's Kathryn Ryan has talked to energy researchers who claim rising demand for electricity in summer (largely due to increasing air conditioning requirements and EVs) will have repercussions on lake levels come next winter. And while Transpower says the risks of an electricity supply shortage this year have eased, next winter's forecast is concerning. Irrigation is also a major user of electricity in summer in some regions. Solar is well-suited to both of these cases as the electricity is usually required during the day when the sun is out, so more solar at home and on our farms can provide a lot of what we need with less strain on the grid and at the lowest cost.
As we have mentioned previously, New Zealand's electricity is much less renewable - and much more expensive - when there’s not enough water in our hydro lakes and we have to burn coal or gas in winter at times of high demand, like we did this year.
Rooftop solar is the cheapest form of electricity availlable to New Zealand households, because the price of the panels has declined so rapidly and the energy is generated where it is used. The price has declined rapidly, while grid electricity has risen and is expected to keep doing so (the red line is what customers are expected to pay for more expensive upgrades to the poles and wires).
Sunshine hours are, on average, 5% higher in a dry year compared to the average and 10% higher in April/May/June. More rooftop solar could help provide the electricity the country needs through winter, and also ensure we go into winter with higher lake levels.
A proposal to let people install solar panels and other green technology using low-interest loans from their council needs to go ahead "as soon as possible", its proponents say. The government asked Local Government New Zealand to present its business case for the proposed Ratepayer Assistance Scheme (RAS) in late 2025. However, ministers still had not made any decisions about whether to go ahead with the scheme - which would let councils provide long-term loans to any homeowner who wanted to access them. That's despite growing political support from parties across the spectrum.
Read moreDownloadQueenstown, New Zealand (18 May 2026) Leading politicians debated New Zealand's energy future on the second day of Electrify Queenstown 2026 today. The sold-out session, moderated by journalist Paddy Gower, opened with speeches from Deputy Prime Minister and ACT Party Leader Hon. David Seymour, Labour Leader Rt Hon. Chris Hipkins, Energy Minister Hon. Simeon Brown, New Zealand First Co-Leader and Associate Energy Minister Hon. Shane Jones, Green Party Co-Leader Chlöe Swarbrick, and The Opportunities Party Leader Qiulae Wong.
Read moreDownloadDiesel generators, you're cooked! We’ve seen a few of our electric communities plug in to their EVs at small events and that's great to see, but Hamish Roberge from Tom Tom Productions in Queenstown has developed a solution that can be rolled out for bigger gigs. Roberge is currently on the job delivering the third Electrify Queenstown conference and it was during last year's conference that he was inspired to create NRG Event Batteries.
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