Energy

Energy is a critical resource for Alcoa due to the energy-intensive nature of our refining and smelting processes.

Securing low-cost and competitively priced energy with minimal environmental impact is a focal point of our long-term energy strategy. We also work to reduce the amount of energy we consume through operational efficiency and technological advances, which lower our costs and GHG emissions.

We have defined short- and long-term energy reduction targets for all of our operations that are integrated in our overall GHG emissions reduction target. These targets will be realized through process and energy-efficiency performance and our long-term portfolio strategy.

Our energy intensity decreased by 1.1 percent in 2020 compared to the prior year. Our overall energy consumption increased by 18.3 million gigajoules, or 5.6 percent, in the same period. Key factors behind the performance are increased usage at the Bécancour smelter in Canada, additional production at our refineries and Warrick power plant, and the curtailment of the Intalco smelter in the United States.

Energy Intensity

2019 Energy by Source

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2020 Energy by Source

Other renewables include geothermal, biomass, solar and wind energy.
Source Direct Purchased Electricity
Thousands of Gigajoules Percent Thousands of Megawatt Hours Percent
Natural Gas 106,216 55.7 4,376 10.3
Hydro 0 0.0 26,177 61.6
Coal 68,392 35.8 6,332 14.9
Oil 12,084 6.3 11 0.0
Other Renewables 120 0.1 3,547 8.4
Diesel 3,867 2.0 1,160 2.7
Nuclear 0 0.0 860 2.0
Propane 105 0.1 0 0.0
Distillates 16 0.0 0 0.0
Local Grid 0 0.0 2 0.0
Total 190,800 100.0 42,465 100.0

Case Study

    Harnessing the Sun’s Power

    With the flick of a switch, our Peel Regional Office in Pinjarra, Australia, got a lot greener when 242 rooftop solar panels came online in March 2020.


    Read more >