winningstreak
20 Mar 2018
Re: Tidal Power Iclaude - Thanks for that clear information, very good indeed!Plenty tidal power along the coastline of the U.K. No need to go shallow, can go deep as well, the whole sea-mass moves back and forth, power can be captured from the whole depthin both tidal directions.ws
Iclaude
20 Mar 2018
Tidal Power For lovers of 'tittle tattle' here is a description of The Rance Tidal Barrage in Brittany, which has been up and running since 1966 and is the second largest in the world:The Rance Tidal Power Station is the world's first tidal power station and also the world's second biggest tidal power station. The facility is located on the estuary of the Rance River, in Brittany, France. Opened on the 26th November 1966, it is currently operated by EDF, and is the second largest tidal power station in the world, in terms of installed capacity. With a peak rating of 240 MW, generated by its 24 turbines, it supplies 0.012% of the power demand of France. With a capacity factor of approximately 40%, it supplies an average 96 MW, giving an annual output of approximately 600 GWh. The barrage is 750m (2,461ft) long, from Brebis point in the west to Briantais point in the east. The power plant portion of the dam is 332.5m (1,091ft) long. Power is generated from 24 bulb turbines with a 5.35m (17.55ft) diameter that rotates at 93.75rpm and is rated at 10MW at a head of 5.65m (18.54ft).Bearing in mind that this produces 96MW one wonders why we have not 'as yet' resurrected The Severn Tidal Barrage, which was forecast to produce 8,640MW of power and 12% of the U.K's energy needs. There must be quite a few estuaries around the UK coastline that could be utilised for tidal power and in my view it would be much more cost effective than planting solar panels everywhere, which degrade over time. Self-sufficiency is the answer to our power needs and tidal is the best method. perhaps we are just waking up to it again.
Chip_Scashtin
20 Mar 2018
Re: Ex-Director sells? What's wrong with tittle-tattle anyway?And I can't stand boards where we all have to go ra ra and big up the company all the time.
Artji
20 Mar 2018
Re: Ex-Director sells? Sorry, haven't been around for a while.John Ward holds 63.9m shares as per the RNS dated 23rd Feb. Prior to that he held 86.4m (see RNS 02/08/17), hence he's sold 22.5m shares.And I don't think that keeping accurate records of major shareholders and their buying/selling is tittle tattle.Artji
Chip_Scashtin
20 Mar 2018
Re: RNS today RedT's system lets you store the energy and sell it into the grid when wholesale prices are high. This is what they do at the Cornwall installation. If the tide is flowing at 3am you will get very little for your watts, but if you can hold onto them until 8.00 then they are worth much more.And it means that the owner of this installation can offer to supply the grid a guaranteed steady amount of electricity, which might make the project viable. But tidal has had no luck so far in the UK, nor should it if the Cardiff Bay project is anything to go by, IMHO.So I'm just taking this as an endorsement of the technology.
weeshyte
20 Mar 2018
Re: RNS today I've always favored harnessing the tide because of it's predictability.FOUR per day, ebb and flow, if you could harness both directions ?
pied kingfisher
20 Mar 2018
Re: RNS today ...and we need baseload rather than peak supply to replace coal/oil burning power statio
dunekiller
20 Mar 2018
Re: RNS today Because the tide time changes each tide, the main thing is its predictable 2 a day every day as long as the moon stays with us.
winningstreak
20 Mar 2018
RNS today Another RNS today, this time about storage for a tidal energy project.But why can tidal energy not be delivered direct to the net?ws
Chip_Scashtin
19 Mar 2018
Re: Another Generation Isn't everyone, and RedT seem so close ... however I think there may be issues with the way these things work, for instance can they cope with a rapid surge in demand when you put the kettle on etc etc. They seem to like these semi-industrial installations rather than go for the mass market.
Global Nomad
19 Mar 2018
Re: Another Generation was also thinking about the domestic scale as an alternative to litium ion batteries.
Chip_Scashtin
19 Mar 2018
Re: Another Generation Well, at least they have a product shipping, unlike some pie in the sky tech plays I have indulged in. Mind you often the hope is better for the SP than the reality.Yes I agree. The smallest machine holds 5kw x 4hrs, which is at least double what is required given that you can timeshift heavy loads like washing machines into daytime sun. The regular load we have to get our heads round is a water pump which will be about 1kw, but not sure at this point how long it will need to run per day -- and power consumption depends on the location of the tank. 2kw x 4hrs capacity for £5k would be a much more interesting proposition, and not beyond the bounds of possibility for RedT down the line, it seems to me.But it does make me think there is demand for this stuff. RedT suggested a 'minigrid' with the neighbours, but unfortunately we are quite isolated. I can think of people who might be interested in that, but it would need to be very Plug-And-Play -- it all feels a bit developmental at the moment.
winningstreak
19 Mar 2018
Re: Another Generation It is high time we see hard cash real sales, not enquiries booked aspotential future sales. Yes, it would be nice to see small domestic storage units coming tothe market some day - Perhaps Redt Generation 4 Units?ws
Chip_Scashtin
19 Mar 2018
Re: Another Generation Update in Feb had 330 units in 'final stage customer selection' -- whatever that is.So this 195 might already be included.They seem to be making good progress, jam the year after next I reckon. MaybeBTW I have initiated a sales enquiry re a property in Portugal, where sun and space are not an issue. Their smallest unit is £25k, which has multiples of the capacity (and cost) for a domestic installation, but not totally out of reach. I'm planning to submit numbers to RedT when I have put the project together and see if they can't get a bit nearer to a domestic scale product. Will update if anything meaningful comes out of this -- but it will be a few months.
Global Nomad
19 Mar 2018
Re: Another Generation 195 units €11m selection for gen 3 pre orders,]I know that those are not sales but that is significant
