Highland Council's south planning committee meets next week to consider SSE proposals for the 83-turbine Stronelairg wind farm in the Monadhliath Mountains between the A9 and Loch Ness, near the Glendoe Hydro Scheme.
Down to 83 from an original 144 turbines, councillors are advised not to object if it is reduced by 16.
Ministers will make a final decision, but if the council does oppose it, a public inquiry will be triggered.
Scottish Natural Heritage is against it, citing its impact on wild land and the wider landscape. The site is close to Cairngorms National Park's boundary and its authority has objected too.
SSE will accept the cut. It said: "The proposed farm is built around existing hydro infrastructure."
l Consent was granted by Scottish ministers for ScottishPower's Kilgallioch Wind Farm, in woodland and moorland between Dumfries and Galloway and South Ayrshire.