[wizzo227]

Does anyone else have experience of "mini oven" kitchen appliances and things like that to cook with less energy than the full sized oven ? Can we get together some comparison figures and metered test examples so that readers will know what to buy ? What else do people cook with for lower bills than traditional ?

My best saver is to have solar photovoltaics on the roof and to preferentially wait for sunny times to cook with mainly locally generated renewable power.

[geoffers]

Originally Posted by WizzyWigg

Amen to induction hobs. 👍👍👍👍
Switched from gas when they first came on the market and never looked back.

Another interesting plus for induction hobs is replacing gas stoves on cruising yachts - with the proliferation of Lithium batteries and solar panels their use is becoming more commonplace.

But that is not the main reason ... Propane gas is heavier than air, so if you have a leak or the gas blows out it will sink into the bilges 😮

The only real solution - get a bucket & start bailing out buckets of nothingness (ie air/gas) which could spoil your day

[meldrewreborn]

@wizzo227

I've heard good and bad reports of Air fryers.

Personally we've always cooked with gas and our current hob and oven/grill are 35 years old and going strong. The capital cost of fitting something new would have to be set against the running cost savings, and @retrotecchie did do some calculation on electric cooking costs a while back.

It gets complex because the "waste " heat from cooking goes into the home so in a way supplements home heating half the year when the heating is on. So cooking is virtually free while the home is being heated. Saving from any new appliance would need to be considerable if payback is for only half a year's worth of use.

The same consideration applies to your dehumidifier proposition. All heat pumps inside the home (fridges/freezers, some tumble dryers and dehumidifiers) use electrical power and their motors will give off an equivalent amount of heat to their consumption. In the winter that will be displacing the need for that amount of heat from another energy source. My home heating is from Gas, which is much cheaper than electricity so its still worthwhile limiting the electrical use and use the CH instead in the winter.

[meldrewreborn]

@wizzo227
@retrotecchie posted this

https://community.eonnext.com/thread...cooking+dinner

But he also posted an essay on alternative approaches to cooking a meal with costings but I can't find it.

[wizzo227]

Test Case 23-Feb-23 Two Slices of Cheese On Toast,
cooked in the grill of the main oven
used about 0.9 kWh ( 30p at Winter 2023 price electricity )

what would you do to score better kWh when cooking ?

[JohnT]

Forget air fryers. I love my halogen oven.
It's 12 litre and 1300w and cost me less than £40 from Amazon two years ago and still going strong.
It's a glass bowl with the heating element and fan in the lid, so really it is a fan oven that you can see into.
It plugs into a mains socket on the the kitchen worktop and has a temperature and timer control.
My calculations show it cooks at about 1p per minute at 200C on my current tariff so about half the cost of using my main (electric non-fan) oven, and no need to warm it up first!

https://www.amazon.co.uk/HALOGEN-ENE...s%2C205&sr=8-3

[wizzo227]

@JohnT
Sounds like you found a better thing than my even cheaper even smaller mini-oven from Belaco, which I'll get to eventually.

Test meal 24-Feb-23 One generous plate of spagetti with beef bolognese
Today I used two gas rings on the stove to cook up 110g (dry weight) of spagetti and to reheat 200g of bolognese mix (from previous batch cooking).
Reading the plain old gas meter (in metres ^3) before and after, and converting to kWh by the same ratio as my gas bills (multiply by about 11.13), reheat bolognese used about 0.52 kWh of gas today.

We are still in the winter heating season so much of the heat which went into cooking would, today, have otherwise been wanted for the gas combi boiler towards heating the house.
The sun has just come out (for the first time today), so the heat pump goes on downstairs using solar photovoltaic surplus. Having been somewhere else all morning, the living room was 16C just now.

[wizzo227]

Test meal 26-Feb-23 One generous plate of spagetti with beef bolognese
Exactly the same meal as 24th, this time cooked on one electric hob ring with mainly rooftop solar power.

Pre-warmed water from the small kettle was used with exactly the same 110g dry weight of pasta as previously.
The plug-in energy monitor showed 0.295 kWh of electricity used in cooking. Pans were stacked so that steam above the pasta warmed the frying pan of reheat bolognese, which warmed an upside down plate instead of lids.

This time I also noted 0.2 kWh of electricity used in the small kettle to do the washing up and have a coffee after. With the small kettle being inside my solar generating capacity, that could also be done for free, in the summer. Sadly not today. With partly cloudy (3/8 cumulus) weather, we get unpredictable minutes of up to 2kW of generation and then too little to use for cooking, even with this smallish 1.2kW electric hob.

So, for todays' meal, I'll claim "0.5 kWh". It is important and unknown whether this used "half solar", in which case gas would be cheaper, or "three quarters solar", in which case electric was definitely cheaper. Electric just about wins on CO2e irrespective of whether it was half or three quarters solar, with the biggest uncertainty (see https://www.carbonintensity.org.uk/ )for my region at present being 40% of national grid electricity being "imports", for which CO2 does not get counted.

I'm not about to tell everyone to buy an electric hob like mine, which I got for £5 from a second hand shop, because it has a truly horrible thermostat. There is design fault / (cost reduction feature) placing the thermostat more in contact with the outer steel housing than with the hot ring, making it unsuitable for unattended cooking.

[wizzo227]

Test Meal 28-Feb-2023 a hot drink and Toast
Using the plug-in energy monitor.
Small kettle to do one mug hot drink 0.063 kWh
Toaster, two slices of white bread toast 0.024 kWh
Small kettle to wash up and a second hot drink 0.096 kWh

[meldrewreborn]

@wizzo227

i only have a similar plug in meter- no smart meter. You I think have both. Which do you think is the most useful in energy saving research?