because it is too expensive and dirty
oil
Oil
Oil has a reserve of chemical energy. If we burn it, that gets converted to heat energy.
The sun
Oil
Oil
no
Oil takes millions of years to form. Eventually we will run out of oil and need a new source.
Oil is a non replenishable source of energy. and, Oil is a "fossil fuel".
The Sun is the ultimate source of all energy on earth.
tecnology and oil
oil that is imported