Nuclear reactors, the new generation

A new generation of "fast" nuclear reactors could use Britain's radioactive waste stockpile as fuel. It will provide enough electricity to power the country for more than 500 years.
This Britain's radioactive stockpile includes more than 100 tonnes of plutonium and 35,000 tonnes of depleted uranium. Terrorists can use the plutonium in nuclear weapons, that is why it will cost billions to get rid of them safely.
The government is looking for a way for disposing of or managing these waste. One option is to build a plant to combine the plutonium waste (very dangerous) with other materials to make mixed-oxide fuel (Mox), which is less dangerous. But, in addition to other difficulties, Mox fuel allows only a tiny proportion of the energy in the waste to be converted into electricity so they are still looking for new proposals.

The engineering firm GE Hitachi has proposed an alternative way based on its Prism fast reactor, which could consume the plutonium as fuel while generating electricity.
No Prism reactors have yet been sold, but GE believes it could construct one in a few years plus the time taken to license the technology.
The reactor will produce as much power as 100 large wind turbines running non-stop or a quarter of a conventional nuclear plant. The reactor core is submerged in a pool of liquid sodium, which acts as a coolant, transferring the heat to the turbines where electricity is generated.
According to the Guardian by Tom Blees, this alternative could produce enough low-carbon electricity from Britain's waste stockpile to supply the UK at current rates of demand for more than 500 years.

The cost of any Prism installation would depend on unknown quantities, including the details of the licensing requirements. However, Eric Loewen, chief engineer at GE Hitachi nuclear, claims that the technology should be economically competitive due to its small and fixed-size modular design, which allows it to be produced in an off-site factory.

It is true that it's better to use renevable energies but without other alternatives to get energy it wouldn't be enough with solar or wind energy.
Guillermo Satué Rodríguez