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IDNO Loads

HI All

Just come across the attached - a snippet from an IDNO's documentation about loads for residentials.

Loads a lot lower than I am used to - what are peoples thoughts on this?

I would not be comfortable going down that low - e.g. an all electric flat with panel rads and a 3kW cylinder - don't see how you could drop down so much.

i tend to see 4.5 to 5.5 kVA for all electric flats, lowerend being for single bed units and 5.5 for two bed

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0 AJJewsbury over 3 years ago

Also I don't understand why a heat pump system is higher than electric heating. Surely a heat pump is supposed to have a COP > 1?

I'd guess that traditional all-electric heating would have a large thermal storage component (e.g. storage heaters or stored water heated by immersion heater) - so would draw a large bulk of its power during off-peak tariffs - while I suspect ASHP are more likely to run on demand - so a much greater chance of it coinciding with other (peak) loads, pushing the max demand up even though the overall energy usage might still be lower.

- Andy.
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0 AJJewsbury over 3 years ago

Also I don't understand why a heat pump system is higher than electric heating. Surely a heat pump is supposed to have a COP > 1?

I'd guess that traditional all-electric heating would have a large thermal storage component (e.g. storage heaters or stored water heated by immersion heater) - so would draw a large bulk of its power during off-peak tariffs - while I suspect ASHP are more likely to run on demand - so a much greater chance of it coinciding with other (peak) loads, pushing the max demand up even though the overall energy usage might still be lower.

- Andy.
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IDNO Loads

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