Publications
47 results found
Speirs JF, McGlade C, Sorrell SR, 2013, Interpreting reserves - Moving from reserves to URR, Pages: 2241-2245
Interpreting reserves: moving from reserves to URR. Given the conservative nature of reserve estimates, the resulting reserve growth over time, and other associated issues, the ultimately recoverable resource (URR) is a more useful resource classification when assessing future petroleum resource availability. This abstract describes some of the findings of a systematic review of the evidence surrounding resource and reserve estimates for both conventional oil and unconventional gas. This review includes discussion of the methodological approaches that can be used, the difficulties associated with these methodologies and the particular issues associated with estimating unconventional resources. It finds that the most robust estimates are likely to arise from a combination of methodological approaches.
McGlade C, Speirs J, Sorrell S, 2013, Unconventional gas - A review of regional and global resource estimates, Energy, Vol: In Press
Sorrell S, Speirs J, Bentley R, et al., 2012, Shaping the global oil peak: A review of the evidence on field sizes, reserve growth, decline rates and depletion rates, Energy, Vol: 37, Pages: 709-724, ISSN: 0360-5442
This review paper summarises and evaluates the evidence regarding four issues that are considered to be of critical importance for future global oil supply. These are: a) how regional and global oil resources are distributed between different sizes of field; b) why estimates of the recoverable resources from individual fields tend to grow over time and the current and likely future contribution of this to global reserve additions; c) how rapidly the production from different categories of field is declining and how this may be expected to change in the future; and d) how rapidly the remaining recoverable resources in a field or region can be produced. It is shown that, despite serious data limitations, the level of knowledge of each of these issues has improved considerably over the past decade. While the evidence on reserve growth appears relatively encouraging for future global oil supply, that on decline and depletion rates does not. Projections of future global oil supply that use assumptions inconsistent with this evidence base are likely to be in error.
Candelise C, Speirs J, Gross R, 2011, Materials availability for thin film (TF) PV technologies development: a real concern?, Renewable and Sustainable Energy Reviews, Vol: 15, Pages: 4972-4981, ISSN: 1364-0321
Decarbonisation goals have triggered photovoltaic (PV) sector expansion and cost reductions in PV technologies. Thin film (TF) PV technologies are currently the cheapest to manufacture and offer the possibility of attaining lower costs. However, scarcity of key component materials has been highlighted as a potential barrier to both large scale deployment and reductions in technology cost. This paper explores this claim for cadmium telluride (CdTe) and copper indium gallium (di)selenide (CIGS) TF technologies and their potentially constraining materials, tellurium and indium. It reviews key literature, highlighting the high uncertainty in the estimates of the resource constrained TF PV potential as well as in data and methodologies used to assess future availability of the targeted materials. The reviewed evidence does not support the contention that the availability of tellurium and indium will necessarily constrain CdTe and CIGS technologies respectively in their ability to supply expected future PV market growth. However, future escalation in indium and tellurium price resulting from demand–supply imbalances could have a negative impact on CdTe and CIGS cost reduction ambitions. Factors influencing indium and tellurium price and their relative contribution to TF PV module production cost need further investigation.
Sorrell S, Speirs J, 2010, Hubbert’s Legacy: A Review of Curve-Fitting Methods to Estimate Ultimately Recoverable Resources, Natural Resources Research, Pages: 209-230
Sorrell S, Speirs J, Bentley R, et al., 2010, Global oil depletion: A review of the evidence, Energy Policy, Vol: In Press, Corrected Proof, ISSN: 0301-4215
Sorrell S, Miller R, Bentley R, et al., 2010, Oil futures: A comparison of global supply forecasts, Energy Policy, Vol: In Press, Corrected Proof, ISSN: 0301-4215
Speirs J, Gross R, Deshmukh S, et al., 2010, Building a roadmap for heat: 2050 scenarios and heat delivery in the UK, Publisher: ICEPT and CES
Thompson E, Sorrell S, Speirs J, 2009, Technical Report 2: Definition and interpretation of reserve estimates, London, Publisher: UK Energy Research Centre, UKERC/WP/TPA/2009/017
Sorrell S, Speirs J, Bentley R, et al., 2009, Global Oil Depletion: An assessment of the evidencen for a near-term peak in global oil production, London, Publisher: UKERC
Miller R, Sorrell S, Speirs J, 2009, Technical Report 4: decline rates and depletion rates, Publisher: UKERC
Sorrell S, Speirs J, 2009, Technical Report 1: Data Sources and Issues, London, Publisher: UKERC, UKERC/WP/TPA/2009/016
Thompson E, Sorrell S, Speirs J, 2009, Technical Report 3: The nature and importance of reserve growth, Publisher: UKERC, UKERC/WP/TPA/2009/018
Sorrell S, Speirs J, 2009, Technical report 5: Methods of estimating ultimately recoverable resources, Publisher: UKERC, UKERC/WP/TPA/2009/020
Speirs JF, Foxon T, Pearson P, 2008, Adapting Innovation Systems Indicators to Assess Eco-innovation, DIME
Speirs J, Foxon T, Pearson P, 2008, Measuring Eco-Innovation Project. WP8 Task 2: Review of Current Innovation Systems Literature in the context of Eco-Innovation, Publisher: EC 6th framework programme
Speirs J, Pearson P, Foxon T, 2008, Adapting Innovation Systems Indicators to assess Eco-Innovation, GREThA, University Montesquieu Bordeaux IV, France.
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