Complete the following paragraph, using the phrases A-F given below. There are more phrases than needed.
A. Stored for a number of days
B. Controlled lots of sources of energy
C. Placed on the roof of a house
D. The use of coal, gas, oil or nuclear power
E. Different kinds of waste in different places
F. Power for the total population
At present, most of our electricity comes from(1).... This power could be provided by the sun. One percent of the solar energy that reaches the Earth is enough to provide(2).... Many countries are ready using solar energy. Solar panels are(3)....and the Sun's energy is used to heat water. The energy can be(4)...., so on cloudy days you can use solar energy too.