The phrase "a welcome source of" is correct and usable in written English.
It can be used to describe something that is appreciated or beneficial, often in a positive context.
Example: "The new funding has proven to be a welcome source of support for the community project."
Alternatives: "a much-appreciated source of" or "a valuable source of".
The Salone always provides a welcome source of cash for the city, recession notwithstanding.
For small towns such as Flamanville, it was a welcome source of jobs.
Supporters say the bingo halls have produced a welcome source of money for struggling municipalities.
Dr Foster's Hospital Guide, published today, is a welcome source of information about standards in healthcare services, which patients and purchasers of healthcare services can use.
Church jobs may not hold the promising future they once did, and good jobs may be increasingly rare, but they offer a welcome source of financial stability.
Now Mr. Soros has emerged as a financial backer of Democrats, becoming a welcome source of money and a lightning rod for criticism.
Seizing the opportunity of decentralised energy generation can provide new income streams for communities and councils; a particularly welcome source of revenue in an era of local government budget cuts.
Our project was one of only 17 selected from a total of 92 applications and the grant provides a most welcome source of fresh funds to support graduate and undergraduate student work in the collections.
In fact, it serves as the little-known headquarters for a fairly new and highly welcome source of income for British authors - based on loans of their books from public libraries - called P.L.R. (for Public Lending Right).
But in Japan, which suffers from a chronic shortfall of domestic spending, a strong yen threatened to erode one welcome source of demand foreigners adding to the difficulties Japan's exporters already face in getting their wares to market.So on March 18th Japan combined with other members of the G7 to push the yen past ¥80 to the dollar.
At the same time, the institution's fundraisers market those stars and their successes to potential donors, generating another welcome source of revenue.
