The wind farm will comprise 33 turbines over an area of around 950 hectares within Strathy North Forest.
Onshore Renewables director David Gardner said SSE welcomes the decision from Scottish Ministers on Strathy North wind farm and all the support received from local communities.
"Work to address the conditions associated with the consent will now take place and we are aiming to start construction within the next twelve months," Gardner said.
"In addition, SSE will be providing over GBP4.75m of community benefit funds over the next 25 years and has plans for additional improvements in the area to increase road safety."
SSE currently has over 2,500MW of commissioned renewable energy capacity in the UK and Ireland including hydro, onshore wind, offshore wind and biomass.
