The power grids in the U.S. — there are actually three of them — are enormously complex, but they're traditionally based on a simple idea: Electricity moves in one direction, from a power plant to homes along high voltage transmission lines and
lower voltage power lines that distribute electricity to individual homes and neighborhoods.
Not exact matches
Puerto Ricans are now desperately trying to connect the main
power arteries to individual homes, and some have resorted to their own makeshift repairs, mounting their own utility poles and stringing up
low -
voltage transmission
lines.
The
lower map shows existing high -
voltage lines capable of transporting wind - generated
power in red; lines needed to meet the 2030 goal for renewable energy, according to the American Electric Power / American Wind Energy Association plan, are shown in g
power in red;
lines needed to meet the 2030 goal for renewable energy, according to the American Electric
Power / American Wind Energy Association plan, are shown in g
Power / American Wind Energy Association plan, are shown in green.
Lowering prices, but at a cost Older wind turbines typically have not been equipped or designed to support
voltage levels on
power lines, a critical stability factor, and weren't required to provide that service.
The situation is complicated in a state such as South Australia where the
power supply system is split between a number of more - or-less independent businesses; there are the
power generators, the company that runs the high
voltage long distance transmission
lines, the company that runs the medium to
low voltage distribution
lines, and the
power retailers.
Step - down transformers
lower the
voltage of electricity coming from the transmission grid, and distribution
lines take the
power to your home or business.