Well, currently the Fossil energy too much expensive, but I heard, Japan is working on retrieving this energy more easily using waves.

On the other hand, US department of energy has declared to donate $50 million funding opportunity through the Office of Fossil Energy to design, construct, and operate two large-scale pilots for transformational coal technologies.
These technologies improve coal-powered systems’ performance, efficiency, emission reduction, and cost of electricity.

So, I think, within 2020, we will be able to use Fossil energy easily and it will less expensive :)

This is the first time, I am hearing about WePower, though :D
I am holding high expectations from it :D