The new wind farm on the Big Island's South Point is steadily producing power for Big Island residents. But it's not steadily shrinking local electricity bills...... But the wind power isn't lowering electricity bills even though it is locally generated, unlike the imported oil the state is so heavily reliant on. HELCO pays for the wind farm electricity by calculating the "avoided cost" or the cost the utility would have to pay if it were to build or generate power on its own. Lee said rates vary because they are tied to oil prices.