Slow Cooker Vs Oven Electricity Cost
Assumptions: 200W slow cooker for 6 hours versus 2,200W oven for 1.5 hours.
| Scenario | Slow cooker | Electric oven | Likely better choice |
|---|---|---|---|
| Stew or casserole | 30p | 81p | Slow cooker |
| Crisp roast | Not suitable | Better | Oven |
| Batch cooking | Good | Good | Depends on volume |
Cost comparison
Slow cookers use low power for long periods, which can still be cheaper than high-power oven cooking.
When each option wins
Ovens are better for browning, roasting and large trays.
What can change the result
Batch cooking can improve either option because one cooking session creates several meals.
FAQs
Is slow cooking always cheaper?
Not always, but it often is for suitable recipes.
Does 8 hours cost a lot?
At 200W, 8 hours costs about 39p.
Can I leave it unattended?
Follow manufacturer instructions and food safety guidance.
Does reheating change the total?
Yes. Add reheating energy if meals are stored.
Last reviewed 3 May 2026. Source: Ofgem energy price cap. Figures are estimates. Actual prices vary by region, supplier, tariff, payment method and meter type.