2/3 of energy input is wasted at the power station.
You divide useful output energy by the input energy. Or equivalently, useful output power by input power.
Heat (thermal energy)
Some energy (or power) is usually wasted. It is often possible to take measures to reduce it, but this can't be completely eliminated.Some energy (or power) is usually wasted. It is often possible to take measures to reduce it, but this can't be completely eliminated.Some energy (or power) is usually wasted. It is often possible to take measures to reduce it, but this can't be completely eliminated.Some energy (or power) is usually wasted. It is often possible to take measures to reduce it, but this can't be completely eliminated.
No
In physics, power = energy / time. It may refer to the rate at which energy is produced (from other energy; you can't create energy out of sheer nothingness), wasted, or transferred.
In a real machine, part of the energy (or power) is always wasted.
Energy efficiency is the ratio between the useful power, and the electrical power used. If this ratio is - for example - 70%, that means that the remaining 30% of the input power is wasted.
Fossil-fuel power stations, hydroelectric power stations and nuclear power stations.
You divide useful output energy by the input energy. Or equivalently, useful output power by input power.
Heat (thermal energy)
Some energy (or power) is usually wasted. It is often possible to take measures to reduce it, but this can't be completely eliminated.Some energy (or power) is usually wasted. It is often possible to take measures to reduce it, but this can't be completely eliminated.Some energy (or power) is usually wasted. It is often possible to take measures to reduce it, but this can't be completely eliminated.Some energy (or power) is usually wasted. It is often possible to take measures to reduce it, but this can't be completely eliminated.
Some energy (or power) is usually wasted. It is often possible to take measures to reduce it, but this can't be completely eliminated.Some energy (or power) is usually wasted. It is often possible to take measures to reduce it, but this can't be completely eliminated.Some energy (or power) is usually wasted. It is often possible to take measures to reduce it, but this can't be completely eliminated.Some energy (or power) is usually wasted. It is often possible to take measures to reduce it, but this can't be completely eliminated.
Sea water desalination
Nuclear power stations collect nuclear energy, and produce heat energy and electrical energy.
No
Renewable energy
The power is specific to the lamp set.