National Grid provides various products and services, including recycling of scrap copper, aluminum wire and cable, lead cable, iron, steel, electric equipment, transformer oil, inefficient lighting lamps and blasts, contaminated soils, and wood waste. In addition, the company also offers programs in spill prevention, sulfur hexafluoride, and manufactured gas plan site remediation. It offers its distribution customers a range of programs and information to assist efficient use of electricity and natural gas. It also supports and contributes to the Renewable Energy Trust Fund, and actively participates in photovoltaic research. The company also provides educational literature, posters, and videotapes for grades kindergarten through eight. Its environmental programs and environmental management system are ISO 14001-certified. National Grid is located in Northampton, Mass.