Biwen Annie An Stepec (formerly An), PhD, holds the position of Senior Researcher at Norwegian Research Centre (NORCE) in Bergen, Norway.

Ken Wunch, PhD, holds the position of Energy Technology Fellow at Lanxess in Houston responsible for business development, technology transfer, and shaping the innovation pipeline and strategy for global oil and gas applications.

Torben Lund Skovhus, PhD, is Docent and Project Manager at VIA University College in the Research Centre for Built Environment, Climate, Water Technology and Digitalisation.

Part 1- Introduction. Chapter 1. Petroleum microbiology's metamorphosis: expert insights on the energy transition. Part 2- Microbial ecology of energy systems. Chapter 2. Impact of microbial biofilms on subsurface energy systems - from oil and gas to renewable energy. Chapter 3. Microbial Control and Sustainability: Can managing microorganisms improve the environmental footprint of Oil & Gas operations?. Part 3- Microbiologically Influenced Corrosion (MIC) and Souring. Chapter 4. Effects of High Salinity PWRI Practice on Sulfidogenesis and Microbially-Influenced Corrosion. Chapter 5. Metagenomic and Metabolomic Analysis of Microbiologically Influenced Corrosion of Carbon Steel in Produced Water. Part 4 - Subsurface reservoir microbiome & hydrocarbon degradation. Chapter 6. The ecological interactions of microbial co-occurrence in oil degradation: the intra- and interspecies relationships in hydrocarbon metabolism. Part 5 - Microbial based emerging technologies in energy systems. Chapter 7. Improved MIC Management using Multiple Lines of Evidence Drives Movement Towards Sustainability - A Case Study in Heavy Oil Production. Chapter 8. Halophyte-based Biocides for Mitigation of Microbiologically Influenced Corrosion (MIC) in Industrial Water Systems. Chapter 9. Response of a model microbiologically influenced corrosion community to biocide challenge. Part 6 - Future perspectives on microorganisms in the energy transition. Chapter 10. Future Perspectives - where do we go from here?