Question 1

How long do solar panels take to pay for themselves?

Accepted Answer

The average payback period for residential solar panels is 6-10 years, depending on installation cost, electricity rates, sun exposure, and local incentives. After payback, solar panels provide essentially free electricity.

Question 2

How long do solar panels last?

Accepted Answer

Modern solar panels typically last 25-30 years with minimal degradation. Most manufacturers guarantee at least 80% output at 25 years. Inverters may need replacement after 10-15 years.

Question 3

Are solar panels worth it in New Zealand?

Accepted Answer

New Zealand receives good solar radiation, especially in the upper North Island. With electricity prices rising, solar panels typically pay for themselves in 7-10 years in NZ, then provide 15-20 years of savings.

Question 4

What is the typical ROI on solar panels?

Accepted Answer

Solar panels typically deliver 10-20% annual ROI, which is competitive with stock market returns. The ROI depends on your electricity rate, sun exposure, system size, and installation cost.