Mon, 17 Aug 2026 02:40:11 +0100 https://www.greenbuildingforum.co.uk/newforum/ Lussumo Vanilla 1.0.3 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10461&Focus=172693#Comment_172693 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10461&Focus=172693#Comment_172693 Thu, 04 Apr 2013 21:07:40 +0100 tony
They would be able to provide energy at constant rates in linked in pairs (high and low) would be in the sea do not look ugly like wind, have a lot going for them.]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10461&Focus=172696#Comment_172696 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10461&Focus=172696#Comment_172696 Thu, 04 Apr 2013 21:20:42 +0100 jamesingram https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10461&Focus=172704#Comment_172704 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10461&Focus=172704#Comment_172704 Thu, 04 Apr 2013 22:00:49 +0100 SteamyTea
There is also a lot of development money floating about on doomed project that are being developed for failure. And this is before the EIA is even considered (see my local press about Surfers Against Sewage and how they distorted the truth about the Wave Hub (that is one of the doomed failures as no one has connected to it in 3 years) and the dredging project going on on the North Coast (just about the only mine that was feasible to be opened has not been allowed to yet).

If we were serious about tidal power we would be installing turbines on a stick that is fixed in the sea floor. Tried and Tested now. And we would have built the Seven Barrage, but we have not.]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10461&Focus=172708#Comment_172708 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10461&Focus=172708#Comment_172708 Thu, 04 Apr 2013 22:25:26 +0100 Mike George http://www.foe.co.uk/resource/briefings/severn_barrage_lagoons.pdf]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10461&Focus=172709#Comment_172709 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10461&Focus=172709#Comment_172709 Thu, 04 Apr 2013 22:27:50 +0100 jamesingram ]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10461&Focus=172711#Comment_172711 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10461&Focus=172711#Comment_172711 Thu, 04 Apr 2013 22:35:08 +0100 SteamyTea http://www.thisiscornwall.co.uk/Surfers-Sewage-raise-concerns-coastal-mining/story-18068762-detail/story.html#axzz2PX4Xj2wm

http://www.thisiscornwall.co.uk/Company-defends-controversial-tin-mining-scheme/story-18090654-detail/story.html#axzz2PX4Xj2wm

Where in North Devon you surfing, I think the weather is going to get better, but the North Coast has not had good surf the last few weeks.]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10461&Focus=172712#Comment_172712 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10461&Focus=172712#Comment_172712 Thu, 04 Apr 2013 22:39:25 +0100 jamesingram http://www.surf-forecast.com/breaks/Woolacombe/forecasts/latest/days_2_to_7]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10461&Focus=172716#Comment_172716 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10461&Focus=172716#Comment_172716 Fri, 05 Apr 2013 07:26:36 +0100 SteamyTea https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10461&Focus=172719#Comment_172719 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10461&Focus=172719#Comment_172719 Fri, 05 Apr 2013 08:17:18 +0100 jms452 Posted By: tonyWhy haven't we got any yet?

They would be able to provide energy at constant rates in linked in pairs (high and low) would be in the sea do not look ugly like wind, have a lot going for them.

I agree they are a nice idea, fully dispatachable but I think with about half the energy generation per unit area of a barrage. At present 'we' just seem interested in renewable kWh(e) generated and the profit comes more from the ROCS rather than selling the electricity. In this commercial environment why would anyone half the amount generated over a simple barrage? As subsidies drop there will be a point where selling premium electricity will be commercially attractive (purely due to the electricity pricing) but until then I think you would need a extra ROC (or two) for tidal lagoons to get them seriously on the radar...]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10461&Focus=172722#Comment_172722 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10461&Focus=172722#Comment_172722 Fri, 05 Apr 2013 08:46:35 +0100 tony
Lagoons have some hope.]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10461&Focus=172725#Comment_172725 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10461&Focus=172725#Comment_172725 Fri, 05 Apr 2013 09:05:35 +0100 SteamyTea Tides may be predicable timewise, the height, and therefore the energy, varies. Not done the sums, but for the area they cover, and the investment, do they generate any more GWh/year than the alternatives?
According to Wikipedia, La Ranche produces 540 GWH/year, is 700m wide, 332.5m for the generating bit, and has a rise of 8m (not sure if that is the maximum range or the mean range). The basin is 22.5 km^2. Or about 4050 million tonnes of water being moved twice a day.]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10461&Focus=172731#Comment_172731 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10461&Focus=172731#Comment_172731 Fri, 05 Apr 2013 09:52:57 +0100 jms452 Posted By: tonythere is virtually no hope of a barrage in the UK due to feet dragging, lobbying by environmentalists, enquiries etc etc = zero

Lagoons have some hope.

The best lagoon sites would also be barrage sites so all these reasons apply for lagoons too.]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10461&Focus=172965#Comment_172965 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10461&Focus=172965#Comment_172965 Mon, 08 Apr 2013 10:38:10 +0100 jms452
http://www.guardian.co.uk/uk/2013/apr/07/swansea-bay-tidal-lagoon-funding
http://www.tidallagoonswanseabay.com/

Somewhere between the lagoons and barrage discussed above (i.e. just one lagoon so not fully dispatchable)]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10461&Focus=172966#Comment_172966 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10461&Focus=172966#Comment_172966 Mon, 08 Apr 2013 11:15:42 +0100 SteamyTea
Now using the fat in the London sewers is a good idea, and only £80m]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10461&Focus=172968#Comment_172968 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10461&Focus=172968#Comment_172968 Mon, 08 Apr 2013 12:04:47 +0100 fostertom Posted By: SteamyTeait looks like EDF is not going to raise enough money for Hinkley PointWot, so it may not happen?!]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10461&Focus=172972#Comment_172972 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10461&Focus=172972#Comment_172972 Mon, 08 Apr 2013 12:55:30 +0100 joe90 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10461&Focus=172976#Comment_172976 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10461&Focus=172976#Comment_172976 Mon, 08 Apr 2013 13:47:43 +0100 jms452 Posted By: joe90is there any downsides?

You need to build lots more 'walls' than a barrage.

If it is viable with 2 ROCs it should be comparable in cost to offshore wind and solar PV. In that case it is a useful technology as more diversity of renewable electricity generation should allow greater grid penetration (without storage).]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10461&Focus=172988#Comment_172988 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10461&Focus=172988#Comment_172988 Mon, 08 Apr 2013 14:59:55 +0100 SteamyTea
Just has to be cheaper than £14b for 8.760 TWh/year for 60 years.
We could just build some walls out at sea, add some sticks and then pop some turbines on top, may not have quite the capacity factor, but tried and tested. Actually we could not bother with the wall.

As for EDF, I think it is 80% owned by the French Government, can they afford the long term commitment on an 'overseas' project, would a British Government survive picking up the tab and there is a lack of private equity for these infrastructure projects at the moment. So I think that all parties involved are quite happy for it not to go ahead. Yes there will be some argy bargy about compensation on the losses already accrued, but these are minor (about £1.2b at moment), pocket money to country.]]>