I have parents in a central Scotland (all electric) retirement property with an E.ON supplied smart meter.
They have been offered E.ON EnergyPlan from April 26th 
No other options available to them as they have an Economy 10 meter and E.ON do not have any tariffs for that except the flat rate (high tariff). Apparently E.ON wrote to users last year but my parents only moved in last month.
So hobsons choice or what to do?