Taunton has been named as the permanent home of the England Women's team.
The Taunton ground is to be bolstered by new facilities
The plan is to stage key matches and major domestic tournaments at the ground, with at least one women's international staged there each year.
Regional training camps will take place throughout the year and building work will improve ground facilities.
It is a joint initiative between the ECB and Somerset and ECB's Gill McConway said: "This is a huge step for the women's game.
Somerset chief executive Richard Gould was equally pleased with the new arrangement.
"We're delighted to make our facilities available to women's cricket whenever required," he said.
"One of our main aims is to make them feel at home here. We're really pleased to help develop the women's game throughout the country, particularly in the South West."
The England women's team have been on an upward curve since winning the Ashes last year, and trounced India 4-0 in the recent one-day series.
With players such as Sussex teenagers Sarah Taylor and Holly Colvin, they fielded a team with an average age of 24 in the one-dayers against India and look set for a bright future.
McConway, the ECB's executive director for women's cricket, was pleased to add some structure to the promise of the team.
She added: "Once again England is leading the way with new developments for women's cricket. We organised the first World Cup for women and the first ever international Twenty20.
"To have a first-class ground, with stunning new development plans, wanting women's cricket is a definite boost and can only benefit the game.
"It will be the first time the women's game will have continuity in the grounds where they play and I'm looking forward to working with Richard Gould and his team to further develop this partnership."