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Personal profile

Research interests

Dr. Stephen Allen is a lecturer and engineer working in the fields of energy analysis, carbon footprinting and life cycle assessment (LCA).  He works collaboratively to improve energy efficiency, produce low-carbon buildings, and develop sustainable construction materials.  Current projects include the £36m Active Buildings Centre, which is designing and constructing buildings that produce more energy than they use.

Stephen previously worked in the UK’s Houses of Parliament and in industry.  As the Energy Adviser at the Parliamentary Office of Science and Technology (POST), he provided scientific advice to parliamentarians and supervised POST Fellowships, influencing energy and climate policy.  As a senior consultant at Sustain and then director at Circular Ecology, he helped companies to reduce the environmental footprint of buildings, rail transport and consumer products.

His publications have been used by parliament, government and the Committee on Climate Change to inform policy, and by professional magazines to influence practice in industry.  He won the George Stephenson Medal from the Institution of Mechanical Engineers (for best original paper), and a place on the USA’s International Visitor Leadership Programme on climate change and renewable energy.  He is conversationally fluent in Spanish.

Willing to supervise PhD

Interested in supervising students studying:

  • Low energy and low carbon design of buildings
  • Sustainable building materials
  • Sustainable energy technologies
  • Thermodynamics and heat transfer
  • Carbon footprinting
  • Life cycle assessment

External positions

Member of Engineering Early Career Forum, Engineering and Physical Sciences Research Council


Director, Circular Ecology Ltd.


Senior Associate, Sustain Ltd


Scientific Adviser - Energy, Parliamentary Office of Science and Technology


Research Officer, SUPERGEN Highly Distributed Power Systems, University of Bath


Mechanical Engineer (Canada and Mexico), Coastal Ecosystems Research Foundation



  • TA Engineering (General). Civil engineering (General)
  • TJ Mechanical engineering and machinery
  • Sustainable energy
  • Renewable energy
  • Thermodynamics
  • Heat transfer
  • Carbon footprinting
  • Energy analysis
  • Life cycle assessment
  • Embodied energy and carbon
  • Building performance analysis

Fingerprint Dive into the research topics where Stephen Allen is active. These topic labels come from the works of this person. Together they form a unique fingerprint.

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Network Recent external collaboration on country level. Dive into details by clicking on the dots.

Projects 2018 2022

Research Output 2007 2018

Open Access
environmental policy
environmental management
2 Citations (Scopus)

The thermodynamic implications of electricity end-use for heat and power

Allen, S. R., Hammond, G. P. & McKenna, R. C., 1 Sep 2017, In : Proceedings of the Institution of Mechanical Engineers Part A: Journal of Power and Energy. 231, 6, p. 508-525 18 p.

Research output: Contribution to journalArticle

Open Access
Industrial heating
Hot Temperature

Life Cycle Assessment of Four Microgenerators: Carbon Footprints and Payback Times

Allen, S., McManus, M. & Staffell, I., 24 Jun 2015, Domestic Microgeneration: Renewable and Distributed Energy Technologies, Policies and Economics. Staffell, I., Brett, D. J. L., Brandon, N. P. & Hawkes, A. D. (eds.). Abingdon, U. K.: Routledge, p. 299-318

Research output: Chapter in Book/Report/Conference proceedingChapter

carbon footprint
life cycle
carbon dioxide
fuel cell

An initial assessment of the environmental impact of grocery products

Fisher, K., James, K., Sheane, R., Nippress, J., Allen, S. R., Cherruault, J., Fishwick, M., Lillywhite, R. & Sarrouy, C., Mar 2013, Banbury: Waste and Resources Action Programme. 135 p.

Research output: Book/ReportCommissioned report

Open Access
environmental impact
greenhouse gas

Residential Heat Pumps: POSTnote 426

Allen, S. R. & Wentworth, J., 16 Jan 2013, POST-PN-426 ed. London: Parliamentary Office of Science and Technology . 4 p. (POSTnotes)

Research output: Book/ReportCommissioned report

Open Access
Hot Temperature


Micro-generation for UK Households: Thermodynamic and Related Analysis

Author: Allen, S., 1 Jun 2009

Supervisor: Hammond, G. (Supervisor)

Student thesis: Doctoral ThesisPhD