Solar panel energy production is their efficiency in converting solar radiation into electricity.
So yes, they seem to be 20% more efficient in converting solar radiation into electricity.
Though I have to say that this is an iterative upgrade, not groundbreaking. If they increased their efficiency by 20% in absolute terms - that would be groundbreaking.
Interesting thanks. So could you have a panel that is slightly more efficient in energy capture than the current best alternative but uses 20% less panel area? I’m entirely unfamiliar with how testing is performed