A £60 million funding boost by the Welsh government is to be invested in new and refurbished childcare settings.
Ministers confirmed the money will go towards 115 childcare establishments across Wales. They say it will help ensure parents can access the government's childcare offer of 30 hours a week government-funded childcare for working parents of 3 and 4 year olds.
The scheme offers up to 48 weeks of childcare each year.
Deputy Minister for Health and Social Services, Julie Morgan, described the programme as "highly ambitious".
According to Welsh government figures, more than 5,000 eligible children are already benefiting from the offer.
Nearly 47% of grants being awarded are being allocated to Welsh childcare settings in the hope of delivering the government's aim of 1 million Welsh speakers by 2050.
Eluned Morgan, Minister for Welsh Language, described the funding boost as an "access point" for Welsh language learning.