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Meet the Ukrainian woman solving the ‘five fear factors’ of wave energy
euronews (in English)
Follow
16/08/2023
Wave energy can produce much more energy than wind power, with much less space, why aren’t we using it more?
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00:00
According to the United Nations, 60% of the global greenhouse gas emissions are derived
00:07
directly from the way that we currently produce our electricity.
00:10
Wave energy can really be a game changer in that regard.
00:13
Hello, I'm Ina Braverman, founder and CEO of EcoWavePower.
00:20
The need for wave energy is unreliable because two-thirds of the world's population are currently
00:24
living on the coastline.
00:25
We can give clean electricity to people right in proximity to their homes instead of driving
00:31
electricity from some city or country center to the locations on the coastline.
00:37
We basically attach floaters to existent man-made structures such as piers, breakwaters, jetties,
00:43
and other types of marine structures.
00:45
The floaters are going up and down with the movement of the waves.
00:48
They're pushing hydraulic cylinders, which are transmitted by the gradable fluid, into
00:53
land-located accumulators.
00:54
A pressure is being built, which is used to turn the hydromotor, turn in the generator,
01:00
and via the generator, we send the clean electricity into the grid.
01:06
The density of water is actually 832 times greater than the density of air, meaning wave
01:13
energy can produce much larger electricity amounts with much smaller spaces, smaller
01:18
devices, which is a big advantage.
01:21
99% of the developers in the wave energy industry have decided to pursue offshore technologies,
01:29
and this created five problems which were common to all developers.
01:33
So the first one was the price of their systems, because when you're putting a power station
01:38
in the middle of the ocean, you need ships and divers and underwater mooring and cables.
01:44
So the installation, the operation, the maintenance becomes sky-high in terms of the cost.
01:49
Environmentalists, which were supposed to be the greatest proponents and supporters
01:54
of offshore wave energy, were actually objecting, because it created a new presence on the seabed,
02:00
which disturbed the marine environment and changed the ecological balance, since the
02:03
only thing in the water are the floaters, which belong in the water, and all the expensive
02:09
equipment, the generators, the conversion mechanism, and so on, is located on land,
02:14
just like a regular power station.
02:16
So that enables us a cost-efficient and reliable design.
02:20
Another problem was the survivability and reliability of those systems.
02:26
So basically, when you're that far into the offshore, you're exposed to wave heights of
02:30
20 meters, or sometimes even higher, and unfortunately, no man-made stationary equipment can avoid
02:36
waves of 20 meters and up.
02:39
Insurance companies saw that it's so expensive and breaking down, they were really reluctant
02:43
to insure offshore wave energy technologies.
02:46
Because we're connected to breakwaters, we have a patented storm protection mechanism,
02:50
that when the waves are too high for the system to handle, the floaters actually automatically
02:54
go up above the water level, and only when the storm passes, the floaters go back into
02:59
the water and commence operation.
03:01
Because we're cost-efficient and reliable, we also have full insurance from global reputable
03:06
insurance companies.
03:07
And then, on top of all of these problems, there became a big question mark on whether
03:12
wave energy can even safely connect to the electrical grid.
03:15
Because not many companies, if at all, have connected back then.
03:18
We have been connected to the grid in Gibraltar for six years.
03:21
Now, we've just connected our second power station to the grid in Israel, which became
03:26
the first wave energy power station in the history of Israel to ever connect to the national
03:31
electrical grid.
03:32
We're very, very excited about it.
03:34
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