Proposed windfarms at sites including Achany, Blackcraig and Harrow's Law are among the developments that SSE hopes to use to improve its renewable energy sources.
Discussing the review, SSE chief executive Ian Marchant said: "Between now and the end of the decade we expect to complete investments in coal, gas, hydro and wind generation developments with a total value of over £600m.
"This should give us almost 11,000 MW of generation capacity, including around 1,000 MW of hydro and wind capacity qualifying for Renewable Obligation Certificates."
SSE was formed by a merger between Scottish Hydro Electric and Southern Electric in 1998.
The company, which recently joined with Carbon Trust Enterprises to support a bio-waste to energy business, serves around 8 million customers across the UK.
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