Dear All,

I have a power meter thing to plug into a GPO and program with tariffs and work out how much an appliance costs. In the set up I have found it has the ability to input 2 tariffs and a different cost for each tariff.

Problem is I have 3 tariffs. I need to average out some of my tariffs to make them into two I guess.

My tariffs are:

Peak 2pm-8pm weekdays = 46.01c/kwh

shoulder 7am-2pm weekdays & 7am-10pm weekends = 18.42c/kwh

offpeak 10pm-7am every day = 10.40c/kwh

I have figured I can input 9hrs per day x 7 days @10.40c/kwh fairly easily to work out the off peak load cost but it's averaging out the other times of the day where I get stuck.

I have 6hr x 5 days @46.01c/kwh

9hr x 5 days @18.42c/kwh

15hr x 2 days @ 18.42c/kwh which represents the rest of the time not off peak load.

My difficulty is averaging out these.

these work out to be 105 hours of the week. Peak is 30/105, shoulder is 75/105.

How do I 'average' these out and enter them into the meter?

I got as far as this then got confused!

peak= 30/105 * 46.01 = 13.14

Shoulder 5 week days = 45/105 * 18.42 = 7.89

Shoulder 2 weekend days = 30/105 * 18.42 = 5.26

(13.14 + 7.89 + 5.26) / 3 = 8.76

Now I know this is not going to be the correct c/kwh average to plug into the meter because it does not seem to be a correct average when it's lower than both the 46.01c/kwh and 18.42c/kwh.

So, what am I doing wrong with the maths???

Can someone steer me in the correct direction please?

What I would like is an average c/kwh I can input into the power meter for 7am to 10pm every day. And input in the off peak cost of 10.40c/kwh for 10pm-7am every day.

Thanks in advance.

Scott.