To continue driving a diverse and inclusive (D&I) environment internally and across our supply chain, in 2019 we reintroduced nine global Employee Resource Groups that mobilize thousands of employees around shared interests, and we formalized our supplier diversity program. We also created a culture and change network with more than 3,000 employee ambassadors globally, and rolled out new flexible work schedules and recruiting programs. In 2019, employees aligned in community service around areas of education and training, sustainability in communities, and public health and safety. This alignment strengthened our positive impact on communities globally with more than 28,000 volunteer hours reported, a 65 percent increase from the prior year.
In January 2019, we made an industry-leading commitment to reduce emissions from our operations to net-zero CO2 equivalent by 2050. We have proactively worked to reduce our greenhouse gas emissions over the last decade and continue efforts to reduce our overall environmental footprint by using materials wisely and preserving land, water, and air quality. In late 2019, we entered into an agreement to purchase 100 percent of our Texas electricity from renewable sources, bringing our total number of global sites powered by renewables to more than 175.
During the year, we enhanced our culture of compliance, introducing the new Baker Hughes code of conduct Our Way, and we continued training employees on a variety of topics including Anti-Corruption/Bribery, Data Privacy, Trade Compliance, Conflicts of Interest, Harassment Prevention, and Anti-Boycott. Baker Hughes also announced its participation in the United Nations Global Compact, an important commitment to align our business practices with the compact’s Ten Principles in human rights, labor, environment, and anti-corruption, and to take actions that advance broader societal goals.