The prince, who is first in line to become head of the Church of England, made his first donation to the church in the 1970s.
Thus far, the parish has raised £1.3 million for the restoration project, with £700,000 raised by the congregation.
According to The Guardian, Prince Charles' donation is thought to be a grand gesture as he reportedly plans to shift to a "broader religious title" when he becomes king.
Rather than keeping Queen Elizabeth's current "Defender of the Faith" title, The Prince of Wales allegedly prefers "Defender of Faith."
Reverend Jim Gibson, the parish minister, said the prince's donation had represented a significant boost to the fund.
"This is a very special church and what we want to do is save this building given its historic and architectural value and the engineers and the architects want this done as quickly as possible," he added.