The federal government has given approval for the development of Cape Wind, America’s first big offshore wind farm, on Horseshoe Shoal in Nantucket Sound.

The Secretary of the Interior, Ken Salazar, announced his decision to approve the project, with only minor changes, at a joint press conference with Massachusetts Gov. Deval Patrick at noon on Wednesday.

Construction could begin within the year on the 130-turbine development, Mr. Salazar said.

The development would create 1,000 construction jobs, and save the emission of some 700,000 tones of carbon dioxide each year, compared with a conventional oil or coal plant, he also said.

The project has been pending for 10 years and has seen fierce opposition. Secretary Salazar said the government would ensure a “more rational and orderly” assessment process for future proposals.

He anticipated legal action to try to stop the development, but said he was confident the decision-making process would withstand any challenge.

The Secretary also addressed claims by Indian tribes on the Cape and Vineyard that the development would interfere with tribal religious practices and potential archeological sites on the seabed of Nantucket Sound.

If such a claim were accepted, he said, it would set a precedent which could have prevented wind power from being established anywhere along the Eastern Seaboard.

He hoped Cape Wind would be the first of many such projects, a number of which already are proposed along the East Coast.

A complete story about the Cape Wind announcement will appear in the Friday Gazette.