Hingham Municipal Lighting Plant Power Supply Portfolio
The Hingham Municipal Lighting Plant provides electricity to approximately 10,000 customers in the town of Hingham. HMLP is a member of New England Power Pool (NEPOOL) and ISO-NE (Independent System Operator - New England), so it can provide power more reliably since it is connected to the power grid and not buying power from a single supplier.
The customer load in Hingham is supplied by entering into long-term and short-term contracts for capacity and energy. These contracts include generators from some companies and system power from others. These various contracts will differ in their duration depending on need, the price and the terms of the agreement. When the market price for energy falls below the price of HMLP contracts, HMLP buys a portion of its energy from the market. Other times that HMLP may buy from the market are when generator outages occur and when HMLP needs additional supply to meet increased load.
HMLP continually manages its mix of power supply contracts (its portfolio) to make sure it has diversity in fuels, generator types and suppliers. It also continually monitors costs and contingencies to mitigate risk and ensure price stability for Hingham customers. Because HMLP is sensitive to environmental issues, we are always looking for competitively priced non-carbon producing sources of electricity.
Breakdown of HMLP's Power Supply Portfolio