The Assembly Govt and Uk Govt are doing a joint feasability study into the Severn Barrage idea, expecting to lead to a final decision in 2010. The study will also look at the possibility of tidal lagoons and decide whether they are in fact a better alternative than a Barrage (can't have both unfortunately, a Barrage would alter the tidal flow). I think tidal lagoons would be a better option because there are enough sites for them to produce more energy than the barrage, they'd be cheaper, and wouldn't destroy any animal habitats. The fact nobody else has made them yet is a challenge rather than an obstacle. Wales should be the first in the world to do this! Leanne Wood asked a question in the Senedd yesterday raising the issue of lagoons, and although Rhodri's reply was dodgy, I think it is very good that lagoons haven't been ruled out at this stage and that there will be some official information emerging on them: "The First Minister: We recognise that there are mammoth environmental problems connected with a barrage, and that there would be some substantial environmental problems connected with tidal lagoons. We are not ruling anything out at this stage, but, as I recall, there will be a feasibility study into the construction a barrage. However, the broad principle is that of how you capture, to the best effect, the enormous power generated by the tidal inflow and outflow of 5 cu km of seawater in the Severn estuary once every 12.5 hours. It is a colossal force to capture, if it can be captured. The answer to the question of whether lagoons are better than barrages has not yet emerged. You paint a pretty rosy picture of lagoons, and you say that they could do the same job as a barrage, but the indications that we have show that they would not do the same job. It may be that we will end up with lagoons and not with a barrage, but they will not do the same job as a barrage. The barrage is a better way of capturing the power, but, as we all accept, it brings with it mammoth environmental problems. " I don't know what indications Rhodri has at all about tidal lagoons (not the Friends of the Earth ones, that's for sure!) but it's a good thing that the feasability study won't be ignoring them.