Waste generated by discarded systems is enormous. Here’s how to decide if it’s really time to replace your current array

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Technically, solar panels have no expiry, but failing parts, changes in certification standards and a hunger for more kilowatts are seeing huge numbers of home solar systems meeting their fate earlier than they need to.

With limited onshore recycling options for solar panels, the waste generated is headed for a crisis point. While some upgrades are unavoidable, here’s how to decide if it’s really time to replace your current array.