The 'renewables' of Wave, Wind and Solar have some major real problems Bob, let alone the objectors on scenic grounds - onshore wind and solar (apart from wasting good land) are high maintenance, you try getting a real life figure of periodic or life time costs and don't the catch fire easily, the offshores even more as the tree huggers refuse to allow cables to be buried so they scrub themselves to death on the seabed at least the units can at least be big enough to gain some efficiency. If the environment agency, power companies and SAS got together we might be rid of the NIMBYs and place wave capture arrays at the points of our coast where erosion is worst and get a double win but thats not joined up thinking...........
However, the biggest threat is the intermittency of supply and the cost of feeding into the Grid, as a result of very little solar wind and wave feed on still frosty winter nights they have to keep generating plants 'hot' now, the tickover power from the nuclear stations is saved at some efficiency by the Dinorwic pumped storage scheme, come morning they open the taps and breakfast kettles glow, but it is not the same for coal or gas burning stations so the more left on standby the higher the cost of power. Until they come up with a viable power storage method this will only get worse.
We should be making more use of waste tip Methane and burning, rather than burying plastics, tyres etc, that or save them cleanly for chemical feedstock.
Old technology and us can play a part of course, Make Ole Blue Greener, Fart in a Fordson!
Brian, doubt I will be 'out to play' Sunday after all, after three days of searching I hooked our lovely little Tom Kitten out of the river on Thursday, family are devastated and there are tears before, during and after bedtime - I'm not ashamed to say plenty of them being mine.