Why not tidal power?

[IsleofRum]

We have wind turbines and they are good at generating electricity when the wind blows, but the tide comes in and out twice(three times in some parts) a day. In some areas (pentland firth, north channel, Western isles) the tide stream is calculable, known to mariners and anyone who understands charts.
Why do we not exploit this to generate wave and tidal power?

Swansea was scuppered by Brexit.

Brexit took away EU Green funding and European Investment Bank loans.

Not enough private investors were interested because our government a) demonstrated daily that they couldn't be trusted.

And b) that they were idiots who didn't have a plan for if enough people were stupid enough to vote to effectively place economic sanctions on their own country.

And c) Uncertainty and chaos and absence of competence deters investment.

(First there was no Brexit deal, and then there was a stupid Brexit deal that will obviously have to be renegotiated because Tory idiots controlled by ideology created a deal that we can't fully implement because it would be so damaging.)

And we need external funding more than ever because there's less money for infrastructure because Brexit hobbles our economy.

We could've been actually "world leading" in something.

But flip-flopping on green energy and creating barriers to scientific cooperation with Brexit are not conducive to getting stuff done.

I’m not sure many countries use it do they?

Seems we’re third?

With total installed tidal power capacity of 511MW, South Korea is leading the way globally, according to the information provided by National Energy Board of Canada.

South Korea is followed by France with 246MW, and the United Kingdom with 139MW.

The recent CfDs are encouraging but tidal flow is always going to be niche.

The Swansea barrage (tidal range) would have been very damaging to the local environment.

I don't see a direct link between Swansea and Brexit.

The UK is actually a world leader when it comes to renewables.

We're back in Horizon now fortunately.

The UKRI guarantee funding system actually wasn't that bad. But it'll definitely be easier without the extra paperwork!

Because estuaries are generally wide and internationally important for migrant bird populations. To put a tidal barrage across would be very expensive and would kill off yet more wildlife.

A zombie thread I know but I thought this might be of interest:
https://mercatormedia.cmail19.com/t/y-e-mtiiyil-ihjighdiu-b/
Personally I think 2050 would be a challenge.