| They connect only through tie lines where power must be converted from alternating current to direct current and back again. |
| The wind plant captures and transforms wind energy into direct current electricity. |
| In fact, while the national grid relies on alternating current for transmitting electrons, the internal Texas grid transmits via direct current. |
| The inverter changes the solar direct current into the alternating current used by most household appliances. |
| The later device converts the low-voltage direct current put out by the batteries into 120-volt alternating house current. |
| This then transforms the energy into the direct current that the battery uses to recharge. |
