Engineering challenge: reduce household energy use

🎯 Aim

To audit household energy use (cooking fuel, lighting, devices), compare stoves by efficiency and cost, and plan realistic savings.

You will learn to

• Use efficiency to calculate fuel needed.
• Calculate electricity use in kWh and cost.
• Compare stoves by cost and smoke.
• Plan and justify energy savings.

🧭 What to do

1. Step 1: enter the family size and the way you cook.
2. Work through each numbered step: move the sliders and choose the options.
3. Watch the drawing and the results change after every choice.
4. Compare the options and their costs in the table and the chart.
5. Answer the questions below, using 💡 Hint before the method.
6. Justify your design in the last step, then download your design report.