☀️ Activities: Energy & Appropriate Technology

List every device in your home that uses energy. Write comparatives: 'The fan is cheaper than air conditioning.'

Calculate how many solar panels you need for basic lighting (3 LED lights × 5 watts × 5 hours = 75 Wh/day). Write a comparison report.

Research how to build a simple rocket stove. Write instructions and a comparison: 'A rocket stove is more efficient than an open fire because...'

Create a table comparing: solar, biogas, rocket stove, grid electricity, and generator. Compare cost, efficiency, environmental impact.

Design a complete off-grid energy system for a small Thai homestead: solar for lighting, biogas for cooking, rocket stove backup. Write a comparative report.