The windfarm is set to be located in a commercial forestry region near Llyn Bran.
The site is said to have been designated by the Welsh Parliament as suitable for large-scale windfarm developments.
Pany y Maen Wind is now expected to focus on the construction and operation of the windfarm following the approval.
The facility will comprise seven turbines with a height of 102m and a total installed capacity of 17.5MW, dependent on the final turbine selection.
The windfarm is expected to commence operations by 2021.
Natural Power Wales Projects, Planning and Environment head John Woodruff said: “We have been working on this project since 2012 and are delighted to have secured consent for our client.
“This keeps our consent record in Wales at 100% and we look forward to seeing the positive outcome of this new green energy development.”
Denbighshire County Council initially rejected the application on the grounds of its impact on the landscape and visual properties of the area, as well as its effect on local dwellings and the historic environment.
However, the decision was appealed and the application was later cleared by the UK Cabinet Secretary for Energy, Planning and Rural Affairs after a review, which declared that the benefits of the scheme outweighed any potential negative impacts.