QuoteHarvesting energy from any light source – even a candle – a new generation of ultra-durable and flexible solar cells means devices never need charging. 'Our grandchildren will laugh that we had cables,' one industry pioneer tells...

Only skimmed this so far, but dropping it in here.

https://www.independent.co.uk/tech/solar-panels-battery-exeger-powerfoyle-b2554294.html

Looks very interesting, hoping it's not hype.

One to keep an eye on 

Good find