The British giant plans to remove 6,000 jobs, which is 10% of its staff, to save £750m annually by 2020.
The company intends to increase its service offerings to the market, including assistance to large business groups in the implementation of power saving measures such as energy-efficient light bulbs, reported Reuters.
Centrica CEO Iain Conn said: "Our purpose is to provide energy and services to satisfy the changing needs of our customers, and as such we will focus our growth ambitions on our customer-facing activities."
Centrica said that the wind generation assets sale is a part of its plan to exit from the sector and would participate to a limited degree through power purchase agreements.
"Alongside a major Group-wide efficiency program, this will underpin long-term shareholder value, as we target operating cash flow growth of 3-5% per year and deliver a progressive dividend policy.
"With Centrica delivering solid financial and operational performance in the first half of the year, and making good progress in strengthening its balance sheet and reducing net debt, the Group is well placed to compete materially against the emerging long-term trends in global energy markets," Conn added.