Although the first wind farm opened in Brazil in 1992, wind has failed to reach its full potential and supplies less than 5 percent of the country’s electricity. That’s because the windswept plains often stretch far away from urban centers and lack the wires and infrastructure to bring the electricity they generate to customers.
The Brazilian government, which is seeking to diversify the country’s power base, has set a goal for wind to reach nearly 12 percent of national generation capacity by 2023. The country is trying to meet this goal by demanding that new projects build their own transmission lines.
It’s a tall order, but the challenge got easier last fall when GE acquired Alstom’s grid and energy business. Both companies already rank among the world’s largest makers of wind turbines. With Alstom under one roof, now GE also has the technology that can get them quickly connected to the grid.
The timing could hardly be better. Brazil makes more than two-thirds of its energy from large-scale hydro projects like the massive Itaipu Dam on the Paraná River (it holds a world record in hydropower generation). But the world’s fifth most populous country is going through its worst drought in four decades, which is making electricity more expensive and driving up the frequency of blackouts. It also has to get ready for the 2016 Olympics, which will take place in Rio de Janeiro this summer.
Virna Araripe is an executive at Casa dos Ventos, which owns Brazil’s largest portfolio of wind projects. In the past, her company has bought a variety of GE turbines as well as Alstom turbines, substations and power lines. She said the new GE wind turbine and grid technology mix made “a compelling package.”
Wind also happens to be complementary to hydro, Araripe says. That’s because in Brazil, wind power is typically fully dispatched to the grid, allowing hydro plants to hold water at dams to save for later in the year. Another hydro application, called pumped-storage hydro, uses electric pumps to move water into holding dams for storage when power is plentiful — say, at night. The dam releases it to generate power when it’s needed during peak hours or when wind and solar are not available. In both senses, wind and hydro can be thought of as literally and figuratively “balancing” each other.
Wind projects are relatively speedy, too, compared to other means of generating power. A new Brazilian wind farm can typically start supplying renewable power within two years.
GE and Alstom have been doing business in Brazil for decades. There were 1,000 GE wind turbines installed in Brazil as of September 2015. Alstom’s high-voltage equipment works on the world’s largest transmission line, known as the Linhão do Madeira. The line runs for 2,580 kilometers (1,420 miles) from the Amazonian state of Rondônia to the state of São Paulo in the Southeast. With Alstom’s grid technology handling the wind power transmission requirement for new farms, their footprint could grow quickly.
Araripe believes wind energy can eventually contribute up to 20 percent of Brazil’s power needs. Her company is ramping up at a rapid pace, planning to have 1,140 megawatts (MW) of installed capacity online by the end of 2017. In five years, it plans to have installed power of 3,000 MW. Araripe says more wind power could bring down electricity costs for producers, who can “pass on some of those savings to the customer.”
That’s a windfall that can fill everyone’s sails.