How much does gas stove cost?

Answer 1

New, the cheapest one is around $275. Top of the line, commercial grade is several thousand dollars. Professional chefs or people who just like to cook feel they need a serious stove to cook on.

Answer 2

Bringing 1l water just to the boil efficiently from 20C with electricity uses about 93Wh = 0.093kWh (from first principles, it takes 1.167Wh [0.001167kWh or units] to raise the temperature by 1C; 80 times that is 93Wh). Heating in a kettle is very efficient (of course in real life if you boil more than you need it's not), so this figure is probably pretty accurate. You can look up the price of 1kWh (1 unit) of electricity on your bill. The result in the UK is a bit over a penny. Probably cheaper with gas, you can calculate it knowing you need 4,182 joules of energy per degree (convert to BTu or whatever gas is billed in).

There is some wasted energy. Little wasted in a kettle, more in a pan, particularly if the heat source is bigger than the pan (big electric ring, gas flame licking over the sides). I've seen an observation that says boiling 1 US quart water in a particular microwave oven required 220Wh (230Wh for 1l), over twice as much as a kettle.

Electrical energy can be measured with a cheap electricity monitor - set it up to measure kWh (energy), not kW (power), set to zero, boil measured water any way you want to check, read meter. Many meters will give you the cost if you enter the unit price. Measuring gas is more difficult.

Answer 3

It depends on the amount of water in the kettle and its starting temp and also how much you are charged per unit of power.