Sounds like something I would write in my yearly performance self-review

obviously not going to save the world by itself but 4% improvement in solar efficiency would be equivalent to 10s of millions of tons of CO2 reduction if this turns out to be scalable

Fuller context from TFA:

> Produced in collaboration with the Fraunhofer Institute for Solar Energy Systems, the panel achieved a record 25% conversion efficiency, a significant increase on the more typical 24% efficiency of commercial modules.

> Oxford PV, a spin-out of the University of Oxford, is a world leader in the development of perovskite-on-silicon tandem solar cells, which have a theoretical maximum efficiency of over 43%, compared to less than 30% for silicon solar cells.

I was wondering that myself, 25% doesn't seem like a "significant increase" over 24%.

I'm wondering if it's just sloppy reporting. At the end they claim their record breaker was 28.6%.

Great but only 4% and unclear if the increased efficiency would justify the production cost