0 the power and ability to be physically and mentally active: --
I'm going to channel all my energies into getting a better job.
approving Her writing is full of passion and energy (= enthusiasm).
[ + to infinitive ] I didn't even have the energy to get out of bed.
I was going to go out this evening, but I just haven't got the energy.
Since I started eating more healthily I've got so much more energy.
1 the power from something such as electricity or oil that can do work, such as providing light and heat: --
nuclear energy
energy conservation/efficiency
The energy generated by the windmill drives all the drainage pumps.
2 the power and ability to be physically and mentally active: --
3 power to do work that produces light, heat, or motion, or the fuel or electricity used for power: --
4 the power from something such as electricity or oil, which can do work, such as providing light and heat: --
energy supply/production
energy use/costs
provide/produce/generate energy These power stations work 24 hours a day, providing energy to the nation.
save/conserve energy We aim to manage and conserve energy and water efficiently within all our premises.
use/consume/waste energy 80% of the energy used to wash garments is needed to heat the water.
We must invest more in renewable energy sources such as wind and wave power.
Many countries are starting to turn their attention to new forms of energy.
The exploration for new sources of energy is vital for the future of our planet.
Solar power is the conversion of the sun's energy into heat and electricity.
I'd like to go out this evening, but I don't think I've got the energy.
For the past month he's been spending all his time and energy on trying to find a job.
We were struck by the raw energy of the dancers' performances.