Scottish Power Economy 2000

Scottish power Economy 2000 tariff for example provides 18hrs of electricity per day at 6.70p/Kw hr.
Interrupting the supply at times of maximum power station demand for 3x2 hour periods per day.
(Note : please check with provider for current rates)

Approximate shut down periods are 8.00am until 10.00am, 4.30pm until 6.30pm and from 12.00am until 2.00am.

Scottish & Southern Energy Economy 10

The E10 Tariff from Scottish & Southern Energy provides 10 low rate hours in a 24hr period. The low rate hours are as follows:

00.00- 5.00, 13.00 – 16.00, 20.00 – 22.00.  The full property is low rate within these hours.

Using the Thermaflow to take advantage of low rate hours

To make most benefit of the low rate you would need to have the unit charge up as much as possible in the low rate periods and activate the heating control to come on an hour and a half before the low rate period ends this means you have heated your house up to temperature and recharged the boiler up to maximum temperature before the low rate period ends.

Depending on the individuals lifestyle, you may have to time the off peak control box to run into the higher rate periods as the heat remaining in the boiler will only last about an hour for heating and will have enough heat in the hot water section to provide one or two showers.

On the last low rate period in the evening you would time the off peak controller to switch off an hour before when the heating system runs until as this will deplete the heat from the boiler ready for recharging during the next low rate period.

So put simply we want to deplete the heat from the boiler before the beginning of the low rate period and activate the heating system before the end of the low rate period to allow us to heat the property and recharge the boiler with low rate electricity.