renewable energy – energy from a source that is not depleted when used.
- Where I live, both solar power and wind power are important sources of renewable
energy.
solar power – power obtained by harnessing the energy of the sun's rays.
- Hussan fitted solar panels to his roof last year and is now able to produce all the
energy he needs to run his home from solar power.
energy-efficient – using only as much energy as is needed without any waste.
- When I buy a new appliance, I look for one that is energy-efficient as it will be
cheaper to run and be more environmentally-friendly.
wind turbine – a tall structure with blades that are blown round by the wind and
produce power to make electricity.
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- Many farmers in my area have installed wind turbines to provide the electricity
they need.
wind farm – a group of wind turbines.
- We were horrified when they got permission to build a wind farm in our beautiful
countryside, but we’re used to it now and understand how important it is to generate
renewable energy.
clean energy – energy produced from renewable energy resources and which doesn’t
produce emissions that contribute to global warming.
- Scientists predict that clean energy could reliably and affordably provide up to 80
per cent of U.S. electricity by 2050.
organic farming – farming without the use of synthetic chemicals.
- Concern for the environment is leading to changes in agricultural methods and
especially to a greater interest in organic farming.
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