Hi Ralphe,
It’s great to see such enthusiasm!
I'm afraid that we don't have any smart meter trials at the moment but if you are interested in smart metering and npower's own smart plans you can register for the npower smart priority queue, available on mynpower.com
https://www.npower.com/at_home/Applications/MyNpower/Login.aspx?ReturnUrl=%2fat_home%2fapplications%2fmynpower%2fsecure%2fmynpower.aspx
Thanks,
Chris