sustainable energy & energy efficient hosuing

What is sustainable energy?

Energy produced and used in ways that meet present needs without compromising the ability of future generations to meet their own needs

What are the key features of sustainable energy supply?

Renewable energy sources

Minimal environmental impact

Affordable and accessible

Long - term availability

Efficient use and reduced waste

What is energy conservation?

The practice of using less energy through behaviour changes, technology, and efficiency improvements.

How can countries promote sustainable energy use?

• nvest in renewables

• Educate the public

• Improve public transport

• Provide subsidies for green technology

• Set legal targets (e.g. net zero emissions)

What is energy-efficient housing?

Homes designed or modified to reduce the amount of energy needed for heating, cooling, lighting, and appliances.

Name 4 features of an energy-efficient house.

1. Insulated walls, floors, and roofs

2. Double or triple-glazed windows

3. Solar panels on the roof

4. Energy-efficient lighting and appliances

How does insulation help with energy efficiency?

t traps heat inside during winter and keeps heat out in summer, reducing the need for heating or cooling.

What role do solar panels play in a sustainable house?

They generate clean, renewable electricity, reducing reliance on fossil fuels and cutting energy bills.

How can smart meters help improve energy efficiency?

They monitor real-time energy usage, helping users reduce unnecessary consumption and control costs.

What is passive solar design?

Designing homes to naturally absorb and store heat from the sun (e.g. large south-facing windows) to reduce the need for artificial heating.

What is insulation in the context of housing

Reduces heat loss and improves energy efficiency

How does insulation help reduce energy use?

It prevents heat escaping in winter and exerting in summer reducing need for heating and cooling systems

What are the benefits of home insulation?

• Lower energy bills

• Reduced carbon footprint

• More comfortable indoor temperature

• Long-lasting energy savings

Why is insulation considered a sustainable energy solution?

It reduces reliance on fossil-fuel-powered heating and cooling, cutting carbon emissions long-term

What are solar panels and how do they work?

Solar panels (photovoltaic cells) convert sunlight directly into electricity for home use.

Why are solar panels considered renewable?

They use the sun’s energy, which is unlimited and does not release greenhouse gases during operation.