We purchase renewable electricity when available, and continue to purchase electricity from fossil-fuel sources in jurisdictions where reliable and abundant alternative energy sources are not available.
Semiconductor manufacturing is an electricity-intensive process, with wafer fabrication requiring more electricity than assembly and test. Electricity consumed at our non-manufacturing sites accounts for 3% of NXP's total consumption.
We produce increasingly complex products that involve many more processing steps, requiring greater electricity consumption.
Our manufacturing sites continually optimize processes and replace or upgrade equipment. We continue to look for new ways to increase our use of renewable electricity sources through power purchase agreements.
Electricity at our offices and R&D sites represents 3% of our total consumption. In 2022, our absolute non-manufacturing electricity consumption increased by 7% compared to 2021 as a result of team members returning to the office in sites where COVID-19 pandemic conditions improved. Since 2012, our non-manufacturing electricity consumption has decreased by 64%.
In addition to electricity, we consume minimal energy from sources such as natural gas, diesel fuel and other fossil fuels.