SSE will offer all its customers a wide reaching energy review designed to ensure they are on the best product for their needs.
The nationwide roll-out follows a successful pilot involving over 1,000 customers.
SSE says this initiative will create 200 new jobs.
Chief executive Ian Marchant said: "SSE takes its responsibilities toward its customers very seriously and believes that actions speak louder than words.
"That is why over the last six months we have been working hard to implement the ten commitments we announced in October 2011, which were designed to begin the process of regaining our customers' trust.
"I'm pleased to report that we have delivered against all of them."
At 1:07pm: (LON:SSE) Scottish & Southern Energy share price was -7p at 1331p
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