That puts a different spin on things - I assumed it would be similar to the UK - where you could export and get paid, as well as use on site. The water wheel is 'small' at 700mm wide 2M diameter - but the water is very regular (unlike mine - which is now struggling at 600 watts

). Total power unknown at present.
Maybe it would be easier to keep the power 'off grid' then.... Just use it to power lights / phone chargers etc. Its being marketed as a 'green gite' - so maybe thats a route for him (got to keep it really simple for maintainance reasons)