BusinessClean and cheap: Solar's winning formulaTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoBusinessMalte Rohwer-Kahlmann10/19/2021October 19, 2021Solar energy is clean, renewable and costs less than burning fossil fuels. So why do we make such little use of it?https://p.dw.com/p/3tEdVAdvertisement