agreed

That's what I was thinking. But I guess the places with the strong tidal currents are not necessarily the places with the best wind.

Pretty sure they will tend to be exposed coast areas facing large stretches of water, so good enough for both. Might not be the best tide generation places, but will have enough flow to make a big difference, seeing as the wind plant puts down the same heavy anchor, which is a large part of the cost, to anchor it, so the floating tide generator or an anchored one is a minor added cost, all the rest is already there.

@@iAmTheSquidThing Dong Energy is building a massive offshore turbine farm in the straights of Anholt, which coincidentally has some of the strongest tidal flows in all of europe. Frankly I'm surprised they didn't add tidal turbines to the bases of those as well.

The tidal turbine assembly would weaken the strength of the wind turbine pylon. That's a real concern in storms.

@@georgew2014 The old Dutch windmills had adjustable sails could not wind turbines have something similar adjusting to the strength of the wind?

*The Orkney islands

KR!RK greedy capitalism my brother

Needs must

£600000 in subsidie and bankrupt today

YEP @KR!Rk especially being Islands surrounded by renewable water

Kr!rk, as usual, when you analyse the system it proves not to be a very good or effective way to generate power. Once again, like all renewables, asynchronous, no inertia and intermittent. The fact that you know when it happens doesn't help. Add to that horrendous maintenace liabilities and it makes little sense to pursue such schemes.

Peter Faber They're in the goldfish bowl! If they realised the potential and actually applied their expertise to exploit Wind, Wave, and tidal flow, they could make serious profit!

Stumbling and hitting your head on a bit of steel is also a thing.

Gordon L Seriously. The risk of that is minuscule. If so, why weren’t they wearing hard hats on the next boat. It’s just some silly rule that gives H&S a bad name.

Hugh Marcus Not seagulls, sheep! "They don't so much fly, as plummet!" (Someone will get it!)

Hugh Marcus It’s the issue of bashing your head going through doors, up and down stairs, and so forth. Ships are a bit more hazardous than your standard office environment.

It's also about litigation and compensation, because everyone knows you can only trip and bump your head in the work environment so if you do so you can call an ambulance chaser and take your boss to the cleaners.

Living in a post Trump world I don't know if this is a clever joke or a serious comment.

True

You can trust people who edit there texts...

The moon is moving further away. More friction, which is trivial, would add to the slowing of our day length and add to the moon's move further way.

I bet Andy added the moon bit to make sure people know it's a joke.

Building a dam you can use all the water that flows by to produce energy, but these would only produce a fraction of that as most of the water flows by. Also with a dam you can very quickly (within seconds) adjust to current electrcity demand which is one of the biggest advantages of common hydroelectric power.

Chris Stork Just testing and refining the technology at the moment.

This is the only one of its kind and is the most advanced in the industry for run-of-river. In time they will be.

It is a research project.

I love the videos, but I also would love to hear the numbers as well. I know its new tech, and that things are subject to change, but its hard to really get excited over something that is otherwise so nebulous.

They are very viable, & profitable that's why Meygen are deploying lots of tidal turbines in the Pentland Firth...

For a simple comparison, Atlantis, the developers of the first commercial scale tidal project slightly to the south of Orkney (MeyGen) put in a bid at the recent UK gov Contracts for Difference auction of ~£150MWh (a very competitive bid for this nascent industry), for the second phase of the project (up to 86 turbines - there are currently 4 for phase 1). The winning bids were by three offshore wind projects, one at (i think) ~£70MWh and the other two at £59MWh). These costs for offshore wind represent huge reductions (50% in 2 years) and as tidal had to compete against this much more advanced technology, it put them at a distinct disadvantage and risks the future of the Meygen project. The Government needs to ringfence this money for wave and tidal technologies, otherwise once again we will lose the head start we have with wave and tidal, like we did with wind.

~£150MWh ? I know what MWh's are, and £ is the British pound right? So is that 150MWh/£? or 150£ / MWh?

Are you refering to the energy generation done by companies like Minesto? I read an article about them about a year ago and the tecnology seems really promising since they use the "kite" motion to increase the flow-through velocity. I haven`t although heard anything since then so I'm wondering how it's progressing. As a follow-up to this episode could you Robert review and comment their technology? They have deployed their turbines at Holyhead Deep but I have no idea if it's up and running yet. Seems like a better idea thanks the surface based turbines. So it would be intressting to get Robert's opinion on it. Www.minesto.com... Thanks for an intressting show.

Star Lord Link to story gas2.org/2017/10/03/new-toshiba-scib-electric-car-battery-needs-just-6-minutes-add-320-kilometers-range/

The problem is that hydrogen really doesn't like to be stored. Making containers where you can keep the hydrogen contained for even a week is really difficult. And extremely expensive.

Probably just relying on the fact it's hard to slice something with a slow turning blade.

Darragh Magee Will be under Dublin Rule after the brits give the go ahead for a border referendum.

Rhiad Marhes Retracting platform legs and oil tanker spills... Compare and contrast to determine the effects on marine life.

You clearly haven't seen this episode kzfaq.info/get/bejne/iN-So8Sizc2ZgZs.html

What an interesting episode. Far more informative than the article I read from itm power. I can't understand why renewable created hydrogen isn't in every corner of the country. I can't see the downside of it.

That's why I specifically mentioned the Scottish government and EU in the voice over introduction

From what I remember being told a few years back, in and around the Scottish Islands there are about 140 locations suitable for tidal turbines, there is more than enough to capture energy to power the entire UK.

There's the Severn as well with one of the most powerful tides in the world