now, dinorwig ru ns wales for 5.5 hours.e it pumps its water uphill at night using cheap electricity it buys from the national grid and charges a premium for the energy it generates during the day. if we were to move completely away from fossil fuel power stations, would that mean that this sort of power station would be able to run? in reality, if we need to pump that water up the hill we need to buy that electricity from the market somewhere, whether that's a thermal power station, a set of windmills, gas power station, whatever it might be. why are there not more of these around? i suppose the greatest challenge is finding a suitable place in the uk to build them. you've seen yourself that you've got to have them in a specific area, it's got to have two legs, the lakes are ideally close together, good vertical separation. are not the kind of things you can easily build on the back of a wagon and reel them in somewhere. those lakes need to exist or you need to create them, so it comes with cost. so i think it's a limited a

hidden inside this mountain is the dinorwig pumped storage power station and it is basically a monstertery. it stores energy by pumping water from this lake to a lake at the top of the mountain and then letting it flow back downhill, releasing that energy at times of peak demand. when you pop the kettle on during breaks in championship matches of that sport they call football, this bad boy springs into action to supplement our national grid, delivering power to our homes in under 12 seconds. it's an incredible view. it's one of the fastest responding power stations on the planet and we'll have a nosy inside the thing later in the programme. dinorwig offers a semi—renewable energy solution at a time when our national resources are being used up. as solar, wind and tidal power alternatives advance, we're craving a method of using their generated energy 24/7 despite the weather or time of day and this is where batteries come in. now, this isn't your stereotypical battery. admittedly when i say battery you probably think of the ones in these. these are rechargeable lithium ion batteries. w

well, that's it from the dinorwig power station in north wales.ello, this is breakfast, with naga munchetty and jon kay. another brexit challenge from boris johnson as theresa may tries to assert her grip on the conservatives ahead of the conservative party conference. public sector pay is once again at the top of the political agenda. good morning, it's saturday the 30th of september.

well, that's it from the dinorwig power station in north wales. visit such an unusual place. feel free to get in touch with us on social media — if you have enough battery, that is. good afternoon. where you get the sunshine, some lovely colourful displays on show out there where the changing autumn colours. those will disappearfrom changing autumn colours. those will disappear from sight over the next few days, windy weather on the way. areas of low pressure to the west, re m na nts of areas of low pressure to the west, remnants of hurricane maria. remnants of hurricane leak, both will have minimal impact on our weather. big area low—pressure, more ofan weather. big area low—pressure, more of an effect. way out at the moment, not a bad afternoon for much of northern ireland, scotland, eastern england, sunny spells continue. temperatures close to 19. a lot more cloud across wales, the midlands, southwest, outbreaks of rain to end the afternoon. in fact, we started are not self—respect for a time, clear is whether in the north, cloudier further sou

hidden inside this mountain is the dinorwig pumped storage power station and it is basically a monsteren letting it flow back downhill, releasing that energy at times of peak demand. when you pop the kettle on during breaks in championship matches of that sport they call football, this bad boy springs into action to supplement our national grid, delivering power to our homes in under 12 seconds. it's an incredible view. it's one of the fastest responding power stations on the planet dinorwig offers a semi—renewable energy solution at a time when our national resources are being used up. as solar, wind and tidal power alternatives advance, we're craving a method of using their generated energy 24/7 despite the weather or time of day and this is where batteries come in. now, this isn't your stereotypical battery. admittedly when i say battery you probably think of the ones in these. these are rechargeable lithium ion batteries. we really can't live without these. lithium ion batteries have truly revolutionised electronics. they power the mobile miracles that we use every day. they have a