Much of these proposals are illogical and should never be built.
Hydrogen (It will have to be green) is a very expensive fuel, and even if it is made with reformed methane (The reason for CCS?) is wasteful and inefficient. Carbon Capture and Storage is another really impractical and expensive process and requires significant amounts of power from the generator.
The Welsh government, like the U.K. government is driven by idealism with no real understanding of the technicalities and disadvantages of renewable generation (And like the Scottish try to out do the U.K. with even more ambitious and ruinous plans). The significant one is the amount of grid expansion required, which if we had a sensible electrical system are not needed.
Trawsfynydd caught my eye, as I worked there when it was active. It was rated at 500 Mwatts so the talk of 1000 Megawatts is puzzling as the drid connection would not cope with that? It makes sense to use old sites a sthe grid connection exists but not if it has to be uprated? And why rule out nuclear?
Our grid is slowly and inexorably getting worse and less reliable. We had anear miss early in January and a trip of some generator or transformer could have put it over the edge. Trips cannot be forseen so that is the risk with reduced inertia and running very close to capacity.
Hydrogen is expensive, but it’s one of the options for long duration storage and grid flexibility, which is why it’s being supported
The 400 kV line from Pentir to Legacy can handle more than 1,000 MW and is currently being upgraded to take all the power that will be coming in subsea from Scotland
Nuclear is not ruled out, but it is more expensive than offshore wind, of which Wales could have an “excess”, so there is no need for it, but we can have it if we want it for other reasons. England is renewables deficient so needs nuclear, but building it in Wales just adds extra grid cost. It’s not flexible enough to “firm” variable renewables
" ...there is no need for any generation other than offshore wind."
Except when it's not windy.
Much of these proposals are illogical and should never be built.
Hydrogen (It will have to be green) is a very expensive fuel, and even if it is made with reformed methane (The reason for CCS?) is wasteful and inefficient. Carbon Capture and Storage is another really impractical and expensive process and requires significant amounts of power from the generator.
The Welsh government, like the U.K. government is driven by idealism with no real understanding of the technicalities and disadvantages of renewable generation (And like the Scottish try to out do the U.K. with even more ambitious and ruinous plans). The significant one is the amount of grid expansion required, which if we had a sensible electrical system are not needed.
Trawsfynydd caught my eye, as I worked there when it was active. It was rated at 500 Mwatts so the talk of 1000 Megawatts is puzzling as the drid connection would not cope with that? It makes sense to use old sites a sthe grid connection exists but not if it has to be uprated? And why rule out nuclear?
Our grid is slowly and inexorably getting worse and less reliable. We had anear miss early in January and a trip of some generator or transformer could have put it over the edge. Trips cannot be forseen so that is the risk with reduced inertia and running very close to capacity.
Hydrogen is expensive, but it’s one of the options for long duration storage and grid flexibility, which is why it’s being supported
The 400 kV line from Pentir to Legacy can handle more than 1,000 MW and is currently being upgraded to take all the power that will be coming in subsea from Scotland
Nuclear is not ruled out, but it is more expensive than offshore wind, of which Wales could have an “excess”, so there is no need for it, but we can have it if we want it for other reasons. England is renewables deficient so needs nuclear, but building it in Wales just adds extra grid cost. It’s not flexible enough to “firm” variable renewables