I apologize in advance for the size of this image, but I had an idea whilst in the bath, so to speak for 'saving the world™' as it were, Eureka! - and have been working on this over the weekend. I think its pretty self explanitary as marked up, obviously this is just a pictorial schematic and doesn't represent what a working model would look like,(for instance I know the radiator and the cool side of the stirling engine should be seperated) but I present it here for public consumption, and gleely await hardeeharhar's rampant demolishing of the principle. . And no, I cant do the calculations!
The point of this device is how to store solar energy during the day without using a battery so that power can still be generated during night time. I have converted the solar energy into potential energy - raising water as steam (rises naturally so needs no pump) into a reservoir so that the potential energy can be released during the night. Nothing here is particulary complicated at all, which means that practically anyone could build one and it will be dirt cheap relatively speaking. Will be great for third world countries, abundant sun-shine and simplicity of manufacture. Because of the immense weight of water - a square metre of it weighs one ton - you can really step up the gearing on this - so the generator will fly for very little movement of the ballast. A bit like Hassan pedalling his bike with a 72 tooth chainring on to a 9. It isn't supposed to be a quick cycle on this thing - I envisage the total downstroke of the ballast should be about 6 hours! so it only cycles twice a day. I've drawn it with a 1 metre cubed ballast, but there is no reason why the ballast couldn't be a mile long if scaled up! running hundreds of generators and quarter of a mile in the sky - All you need to do is scale up the rest of the components and the steam generator.
I know there is nothing new here, its just the combination of already existing devices arranged in a certain manner. Have fun!