The calculator crunches the numbers for you. Installing a solar-energy system can cost many thousands of dollars, so will the numbers stack up for you? This is Dr Alan Wood from the University of Canterbury. His team has developed a calculator that will help you decide. Alan? The calculator crunches the numbers for you. It takes into account things like whether you're at home during the day and using power, as that can make quite a difference. So it's easy to use? Absolutely. For more information, visit energywise.govt.nz INDICATOR CLICKS RHYTHMICALLY (GASPS) SILENCE (EXHALES SLOWLY) Mate, I'm so sorry. I thought there was time. You just pulled out. I don't have time to stop. It was a simple mistake. LOUD RUMBLING Please. (VOICE TREMBLES) I've got my boy in the back. I'm going too fast. I'm sorry. (SOBS) SEAT BELT CLICKS EERIE CREAKING HARSH WHOOSHING The calculator crunches the numbers for you. Installing a solar-energy system can cost many thousands of dollars, so will the numbers stack up for you? This is Dr Alan Wood from the University of Canterbury. His team has developed a calculator that will help you decide. Alan? The calculator crunches the numbers for you. It takes into account things like whether you're at home during the day and using power, as that can make quite a difference. So it's easy to use? Absolutely. For more information, visit energywise.govt.nz