Electricity Charges

Orla

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Joined
24 Feb 2006
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545
Location
NW Scotland :)
www.yachtorla.com
The marina I'm in for the winter sell cards for electricity (10KW & 50KW).
I want to leave a wee heater 500W on for the next 5 weeks while I'm away.

When were onboard we use very little mains electric, battery charger, laptop and thats about it. Ive only used 2 x 50KW cards so far (3 months) costing 17.50 euros each.
Whats it going to cost me to run the 500W heater for the next 5/6 weeks?

And does 17.50 euros sound about right for a 50KW card?

Im not good at working this kind of stuff out :o
 
The marina I'm in for the winter sell cards for electricity (10KW & 50KW).
I want to leave a wee heater 500W on for the next 5 weeks while I'm away.

When were onboard we use very little mains electric, battery charger, laptop and thats about it. Ive only used 2 x 50KW cards so far (3 months) costing 17.50 euros each.
Whats it going to cost me to run the 500W heater for the next 5/6 weeks?

And does 17.50 euros sound about right for a 50KW card?

Im not good at working this kind of stuff out :o

12 Kw per 24 hrs / 50 = 4.16666 days

you need on of these
http://www.tlc-direct.co.uk/Main_In..._Menu_Index/Therostats_All/Therm_1/index.html
 
Last edited:
I take it you mean 10kWh and 50kWh


A 500 watt heater is 0.5 kW

It will use 0.5 kWh for every hour that is is on if its not thermostatically controlled

There are 24 x 7 x 5 = 840 hours in 5 weeks

so it will use 0.5 x 840 = 420 kWh in that time

It will use 420/50 = nearly 9 50kWh cards

9 x 17.5 € = 157.5 €

Fit a thermostatically controlled heater!
 
As regards charges, you seem to be paying €2.85 per kwh. We felt hard done by in Greece paying €0.39 per kwh, so I think the charges are a little steep.

Really glad I got my Relek's stove up and running for this winter, couldnt imagine the cost of heating the boat all winter with mains electric......
 
12 Kw per 24 hrs / 50 = 4.16666 days
I'm not sure what that calculation is meant to represent, but this is a HLIAPOS question. It depends on the heater having a thermostat, what you set it at, and the ambient temperature. If no thermostat, or you leave it on a high setting, you will use 0.5kW x 24h = 12kWh per day. Don't even consider this! You would be better with a 3kW heater with a thermostat.

My son has an apartment where he pays 24p per kWh for the first 900kWh and 12p for the rest. I have no idea how much I pay at home, or how much other marinas charge.
 
I'm not sure what that calculation is meant to represent, but this is a HLIAPOS question. It depends on the heater having a thermostat, what you set it at, and the ambient temperature. If no thermostat, or you leave it on a high setting, you will use 0.5kW x 24h = 12kWh per day. Don't even consider this! You would be better with a 3kW heater with a thermostat.
.

Your quite right it is a HLIAPOS...
The wee heater we are going to use is an oil filled radiator type, and it does have thermostat built in, but the potential is there for it to be on flat out if its cold enough. Orla is really well insulated, so hopefully wont be to bad.
I guess I will just have to bite the bullet on this one and get something better in place for the future..

Many thanks to all

Dougie
 
I run two 500 watt Dimplex heaters all winter on my boat whether she is in or out of the water. Never costs more than £50 for he whole winter and we pay about the same per unit.

If you are not on the boat there is no reason to have the heating on high, it just needs to prevent freezing and dampness.

If the boat is well ventilated set it to keep the temperature above 5 degrees C and you should say completely damp free and spend very little money.
 
The cost of 17.50 Euros per kWh comes to 35cents per unit.
My last marina electricity bill was charged at 14pence +5% VAT per unit. So 50kWh would cost me £7.35 including VAT.

I would expect to use that amount of electricity per week on average over the winter months (in the midlands UK). My frost protection heat , which has a thermostat, is rated at 200W.
 
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