30+ years sounds excessive for managed installations (anything thats not just sitting inaccessibly on a roof with prohibitively expensive access costs), would t

30+ years sounds excessive for managed installations (anything thats not just sitting inaccessibly on a roof with prohibitively expensive access costs), would think max 10-20 years, if you have the option to upgrade some higher efficiency panels for maintaining best ROI given current trends continue and land being a cost factor in most regions.