Читать книгу The Self-Sufficiency Handbook - Alan Bridgewater - Страница 67

A grid-tie-in system consists of the wind generator mounted on a mast/pole, a utility tie-in inverter, a bank of batteries for a backup system, a utility switch box, and a battery system switch box. The wind blows over the blades, causing them to rotate; the prop spins on a horizontal axis, turning a shaft inside the generator; the generator converts the turning motion into electricity; and so on as with the off-grid system. The only difference this time—and the detail depends upon your choice of system—is that the electricity is either used first by the house, with the excess being fed back into the grid, or it is fed directly into the grid, and the house takes power from the grid. Either way, you will be cutting down on your total costs, using a renewable source rather than a fossil fuel, reducing harmful emissions, and generally achieving a measure of independence.