The upstream industry initially examined oilfield electrification to obtain greater operational efficiencies. But now, it is also a means to reduce emissions. Accordingly, the industry has developed new methods that include electrification of various drilling functions and onshore and offshore production, as well as better electric motors for frac pumps, electrification of subsea systems and electro-optical technology for CT well interventions. This e-book contains recent technical articles that represent these technologies, as well as others.