The Inn by the Sea is celebrating being the first Webber Energy Fuels’ biofuel program customer on Oct. 21. The inn, on Route 77 in Cape Elizabeth, may be the first lodging in the state to use a biofuel mixture as a major source of energy.

The day’s activities already included pumpkin carving for local kids from 10:30 a.m. to 1 p.m. Gov. John Baldacci will also speak at 10:30 a.m. to mark the start of Webber Energy Fuels’ new biofuel program.

Biofuel is a mixture of heating oil and fats and vegetable oils. Biofuels burn cleaner in a boiler or furnace, and using them cuts down on the overall consumption of heating oil.

The Inn by the Sea will be the first hotel in Maine to heat its building with biofuel. The inn received a green lodging certificate from the state this summer, which recognized he inn’s efforts to use practices that were less harmful to the environment.

Mike Shea, president of Webber Energy Fuels, said the biofuel currently contains 5 percent natural renewable resources. He said there are larger percentages available, but the company will need to do more research to have higher percentage biofuels in Maine’s cold winter climates. Biofuel tends to gel in cold weather, he said.

The public is invited come and celebrate with the inn and bring their children to carve locally grown pumpkins.