Both gas and electric ovens are thermostatically controlled, meaning that they power down to conserve energy once the desired temperatures are reached and continue this cycle throughout the cooking process. The difference therefore lies in the cost of the power source heating the ovens. Gas and electric ovens use roughly the same amount of energy per year but the higher price of electricity makes electric ovens costlier to run. On average, electric ovens can cost up to five times more to run per year than gas ovens. It is also very possible that electricity prices will continue to rise at a higher rate than gas prices because of green taxes on electricity. Add to that the fact that gas ovens don’t need as much fuel to operate and you’ve got a clear winner.
Electric ovens also tend to need more frequent maintenance and repair or replacement of parts may be necessary more often than with gas ovens, all of which adds to the running costs. The coils tend to suffer from wear over time and power outages can damage parts. Because of this, gas ovens also tend to have a longer life span than electric models so they are a better investment.
Overall, therefore, gas ovens are cheaper than electric models, largely because the cost of electricity is so much more expensive than gas.