Gas ovens are more expensive to buy and install than electric, but they’re still considered to be cheaper over time and more efficient to run. One of the things to take into account is whether your kitchen already has a gas connection. If not, this can add significantly to the overall cost of a gas oven.
Electric ovens are generally cheaper to purchase and install — making up over 80% of the market — but historically they've cost more to run due to the price of electricity. Most consumer advice sites continue to maintain that electric ovens are more expensive to run than gas.