Durability
noun
I have the nature of being resistant for a long time. Things that are resistant for a long time have good durability.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
太陽光発電のパネルの耐久性がどんなもんなのか気になっています。
I’m wondering how durable solar panels are.