We did a SunPower install Q4 last year, budgeted £30k, but inverter hiccups cut output 8% in year 1. long term solar costs factory flagged this risk, wish we’d planned better. Anyone else see payback slipping past 6 years? How do you handle warranty claims?

https://alexisnvjp587.iamarrows.com/real-factory-solar-costs-our-actual-bills-before-and-after

We did a SunPower install Q4 last year, budgeted £30k, but inverter hiccups cut output 8% in year 1. long term solar costs factory flagged this risk, wish we’d planned better