Jeffreys Bay Wind Farm

Developed by:

Mainstream Renewable Power

Construction Managed by:

Mainstream Renewable Power

Technology Supplier:

Siemens Wind Power

Project Owners:

Globeleq and consortium

Commercial Operation Date:

Q2, 2014

The Jeffreys Bay Wind Farm was Mainstream’s flagship Wind Farm in South Africa. In 2014, it was the largest, and one of the first wind farms to reach commercial operation in Q2, 2014 as part of Bid Window 1 of the South African government’s Renewable Energy Power Procurement Programme.

The wind farm spans 3,700 hectares on which 60 wind turbines (60 x SWT2.3 MW) have been erected and has a 20-year Power Purchase Agreement with Eskom.

The Wind Farm was developed by Mainstream and bid into BW1 with Globeleq and a locally-based South African consortium.

Onshore wind

Eastern Cape

138 MW Gross


Powering 100,000 South African homes each year

The Jeffreys Bay Wind Farm reached commercial operations in mid-2014, having started construction in December 2012.

The Wind Farm supplies 460,000 MWh each year to the grid, enough clean, renewable electrical energy to meet the needs of 100,000 average South African homes. The project effectively reduces annual CO2 emissions by 420,000 tonnes and lifetime CO2 emissions by 8,400,000 tonnes.

By the numbers


power generated each year


local homes powered each year


avoided each year


hectares site

Mainstream is powering South Africa on her just energy transition

Mainstream managed the construction process and I am very proud to report that during more than 1.2 million man hours of construction work carried out, there was not one single lost time injury. This is testament to the emphasis Mainstream places on health and safety.

Eddie O'Connor, Founder and Former CEO, Mainstream Renewable Power

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