2021 Owens Corning Sustainability Report | Reducing Our Environmental Footprint | Energy Efficiency | 140 ENERGY INITIATIVES Shifting toward renewable energy is key to our carbon reduction goals. To make this shift, we evaluate renewable energy opportunities globally and invest in on-site renewable programs. We also collaborate with external partners; through our sourcing organization, we look at renewable energy procurement options available through our utility providers. In addition to the PPAs discussed above, the following are highlights of our on-site and off-site renewable programs in 2021: ■ We installed a new fuel cell at our site in Compton, California, U.S., in 2021. At 750 kilowatts, this new fuel cell is nearly double the size of the previous fuel cell, and will be more efficient than the prior installation. ■ Our facility in L’Ardoise, France, sourced 100% renewable electricity through the Compagnie Nationale du Rhône’s (CNR) Caderousse hydroelectric project, which harnesses energy from the Rhône River. ■ In January, a solar farm was completed at our IPP roofing components plant in India. Its 854 solar panels are expected to generate 5% of the plant's total required power and help the plant meet local government regulations. ■ In Toledo, Ohio, U.S., a 2.4-megawatt solar array provided approximately 20% of the power for our world headquarters. ■ The 2.7-megawatt solar panels installed at our insulation plant in Delmar, New York, U.S., provided approximately 8% of its required electricity. ■ The roofing plant in Kearny, New Jersey, U.S., sourced around 4% of its required electricity from roof solar panels. ■ Our Tessenderlo, Belgium, location sourced approximately 11% of its electricity from wind turbines onsite and off-site. ■ At our plant in Fairburn, Georgia, U.S., a one-megawatt solar installation saved an estimated 1,257 metric tons of CO 2 e emissions. ■ In New Jersey, a solar installation is expected to come online by April 2022, bringing nearly 3.4 MW of renewable capacity to the grid, and with the potential to generate 4,400 MWh of renewable solar power a year. There is also potential to expand the array and further increase capacity. Photo submitted by: Michael Zepeda | Compton, California, U.S. Fuel cells at our Compton plant generate electricity without combustion, delivering reliable and resilient clean electrical power. Guarantees of Origin in Europe ■ In June 2021, our plant in San Vicente, Spain, signed an agreement with their electricity supplier ensuring that 100% of the facility’s electricity comes from renewable sources. This switch is part of a larger project that also includes water usage, carbon dioxide emissions, and waste to landfill. Our Science & Technology Center in Chambéry, France, began to source 100% renewable electricity in 2021 as well. ■ As of 2021, we now source renewable electricity at 11 of our European locations through guarantees of origin, certificates that provide assurance that the electricity comes from renewable sources. Sites with active guarantees of origin (GoO) in 2021 are: Apeldoorn (Netherlands); our Chambéry Science & Technology Center (France); Hällekis, Hässleholm, and Skövde (Sweden); Klášterec (Czech Republic); Parainen and our Parainen Science & Technology Center (Finland), San Vicente (Spain); and Tessenderlo and Zele (Belgium). ■ In 2021, these 11 sites sourced 224,476 MWh of renewable electricity, which in turn saved 56,828 metric tons of related CO 2 e.