Use the calculator below to compare your electricity supply costs (the costs of the actual electricity) to National Grid’s Basic Service costs, and to quantify the greenhouse gas benefits of opting up to 100% renewable electricity with PowerChoice Green.

Please note: Your electricity delivery costs (the cost to bring electricity to your home or business) will not be changed by your participation in Nantucket PowerChoice.

To use the calculator, find your monthly electricity use (in kWh) on your National Grid electricity bill and enter it into the box below.