We'll see if it will catch on or not. Note that the speed for the ship in the OP is 10 knots, while the other one is 16 knots or less. That is way slower than diesel-powered cargo ships of that size. Whether shipping companies will accept running that much slower, in exchange for saving fuel costs, remains to be seen.
Of course, this is a trawler forum, so a lot of the people here think running slower is a fine thing. But even here we have participants who readily accept the increased fuel costs to be able to go faster.
Anyway, it is interesting what some people are coming up with nowadays.