Case Study 1:
Byrne Insurance is open from 8am to 6pm Monday to Friday. During the evenings between 6pm to 11pm they are charged on a day-time tariff (.16c/kWh) by their electricity supplier. Between 11pm and 8am they are charged on a night time tariff (.075c/kWh).

5 hours on day time tariff and 9 hours on night time tariff.

Each workstation has the following items which are left plugged in during the above times when the office is closed. The Wattage is the electricity usage if the items were left switched on:
PC - 130 Watts
Monitor - 150 Watts
Printer - 200 Watts
Phone charger - 20 Watts
Total Usage per Workstation: 0.500 Kilowatts

Results:
Day time: 0.500 Kw x 5 hours x 365 days x .16c/kWh = €146
Night time: 0.500 Kw x 9 hours x 365 days x .075c/kWh = €123
Total Cost if all the items above were left switched on = €269 per year per workstation.

Solution:
Easy-Off Auto Power Block cost = €31.47... SAVING YEAR 1 = €237.53pp
Potential saving to Byrne Insurance with their staff of 100 = €23,753

Case Study 2:
Speedy Couriers is open from 7.30am to 5.30pm Monday to Friday. They are on a general purpose tariff (.16c/kWh) with their supplier.

14 hours on a general purpose tariff.

Each workstation has the following items which are left plugged in during the above times when the office is closed. The Wattage is the electricity usage if the items were left switched on:
PC - 130 Watts
Monitor - 150 Watts
Printer - 200 Watts
Phone charger - 20 Watts
Total Usage per Workstation: 0.500 Kilowatts

Results:
Daytime 0.500 Kw x 14 hours x 365 days .16c/kWh = €408
Total Cost if all left switched on as above €408 per year.

Solution:
Easy-Off Auto Power Block cost = €31.47... SAVING YEAR 1 €376.53pp
Potential saving to Speedy Couriers with their staff of 15 = €5,647.95