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Steve Ransome

Summary of interests

  • Comparing measured outdoor performance with simulation program predictions
  • Contrasting the performance of different PV technologies
  • Solar energy analysis : Solar cell performance, outdoor performance logging, Meteorological data
  • Modelling : solar cell loss mechanisms, 2 diode model optimisation, anti reflection coating analysis, production statistics, tilted plane and stochastic algorithms, comparisons of different technologies, shading losses
  • Publications author of 80+ papers at international Solar conferences worldwide since 2000 including 3 prize winners and many invited talks
  • Software developing - mostly Python, Excel/VBA, MySQL

Contact me steve@steveransome.com for information


Next conferences/visits probably attending

33rd EU PVSEC Amsterdam 25-29 Sept 2017
PVSEC-27 13-17 Nov 2017 Shiga Japan
14th PVSAT Apr 2018 Imperial College, London, UK

Publications 2000-2017+

(new in red)

2017 To be presented

PVSEC-27 13-17 Nov 2017 Shiga Japan
Two abstracts have meen submitted
33rd EU PVSEC Sep 2017 Amsterdam, NL
( 82 ) "A Systematic Comparison of >7 Empirical Models Used for Energy Yield Predictions vs PV Technology 5CO.7.6"

To be presented 27th Sep 2017 -.

2017 already presented

44th PVSC 25-30 June 2017 Washington DC, USA

( 81 ) powerpoint "How to Choose the best Empirical Model for Optimum Energy Yield Predictions"
Steve Ransome and Juergen Sutterlueti(Gantner Instruments)

Presented Jun 2017 - Existing or potential new clients can write and ask for a copy of the paper

13th PVSAT Apr 2017 Bangor, UK

( 80 ) "OPTIMUM USE OF THE LOSS FACTORS MODEL (LFM) FOR IMPROVED PV PERFORMANCE MODELLING"
Steve Ransome and Juergen Sutterlueti(Gantner Instruments)

Presented Apr 2017 - Existing or potential new clients can write and ask for a copy of the paper

7th PV Energy Rating and Module Performance Modeling Workshop, Canobbio, Switzerland 30-31 March, 2017

( 79 ) "Choosing the best Empirical Model for predicting energy yield"
Steve Ransome and Juergen Sutterlueti(Gantner Instruments)

Presented Mar 2017 - Existing or potential new clients can write and ask for a copy of the paper


2016

6th PV Performance Modeling Collaborative (PVPMC) Workshop Freiburg, Germany (24-25 Oct 2016)

( 78 ) "Maintaining Optimum Performance from Large Scale Utility Applications"
Juergen Sutterlueti, Torsten Becker and Joerg Scholz (Gantner Instruments) , Steve Ransome (SRCL UK)

Presented 25th Oct 2016 - Existing or potential new clients can write and ask for a copy of the paper

( 77 ) powerpoint "Determining the causes and rates of PV degradation using the Loss Factors Model with high quality IV measurements"
Steve Ransome (SRCL UK) and Juergen Sutterlueti (Gantner Instruments)

EUROREG-PV 2016 21-23 Sept, 2016 University of Ljubljana, Slovenia

( 76 ) "INVITED Performance rating and degradation analysis of PV modules"

Presented 23rd Sep 2016. Existing or potential new clients can write and ask for a copy of the paper

32nd EU PVSEC Jun 2016 Munich, Germany
( 75 ) "Advanced Performance Monitoring System for Improved Reliability and Optimized Levelized Cost of Electricity"
George Makrides, Alexander Phinikarides, Juergen Sutterlueti, George E. Georghiou and Steve Ransome

Presented 23rd Jun 2016 - now available on conference website. Existing or potential new clients can write and ask for a copy of the paper

43rd PVSC June 2016 Portland Oregon, USA
( 74 ) "Degradation Analysis of PV Technologies Using NREL and Gantner Instruments Outdoor Data"
Steve Ransome and Juergen Sutterlueti

Presented 9th Jun 2016 - now available on conference website. Existing or potential new clients can write and ask for a copy of the paper

12th PVSAT Apr 2016 University of Liverpool

( 73 ) paper powerpoint "PV PERFORMANCE MODELLING WITH PVPMC/PVLIB"
Steve Ransome, Josh Stein, Will Holmgren, Juergen Sutterlueti


2015

4th PV Performance Modeling Collaborative (PVPMC) Workshop TUV Cologne, Germany (22-23 Oct 2015)

( 72 ) "Using Advanced PV and BoS Modelling and Algorithms to Optimize the Performance of Large Scale Utility Applications"
Juergen Sutterlueti (Gantner Instruments) and Steve Ransome
For more information please contact " J.Sutterlueti [at] gantner-environment.com "

( 71 ) "The 'best' PV Model Depends on the Reason for Modelling"
Steve Ransome and Juergen Sutterlueti (Gantner Instruments)
Existing or potential new clients can write and ask for a copy of the paper

31st EU PVSEC 14-18 Sep 2015 Hamburg Germany

( 70 ) "5DO.11.6 A Comparison of PV Performance Prediction Model Types for Different Technologies from Outdoor Measurements"
Steve Ransome and Juergen Sutterlueti (Gantner Instruments)
Existing or potential new clients can write and ask for a copy of the paper

IET Renewable Power Generation (RPG) Volume 9, Issue 5, July 2015, p. 398-404

( 69 ) paper "Worldwide photovoltaic energy yield sensitivity from a variety of input losses"
Expanded journal paper from PVSAT10 - Steve Ransome

42nd PVSC 2015 New Orleans, USA

( 68 ) "#3067 Improved PV Performance modelling by combining the PV_LIB Toolbox with the Loss Factors Model (LFM)" - with Sutterlueti + Scholz (Gantner Instruments), Stein (Sandia National Laboratories)
Existing or potential new clients can write and ask for a copy of the paper

11th PVSAT 15-17 Apr 2015 University of Leeds

( 67 ) "COMPARING PV MODELS FOR DIFFERENT TECHNOLOGIES WITH OUTDOOR IV DATA"
Steve Ransome
Existing or potential new clients can write and ask for a copy of the paper


2014

WCPEC6 Nov 2014 Kyoto, Japan

( 66 ) "WORLDWIDE ENERGY YIELD SENSITIVITY VS. PV TECHNOLOGY COEFFICIENTS DERIVED FROM THE TEL/SRCL LOSS FACTORS MODEL"
Steve Ransome and Juergen Sutterlueti (TEL Solar)
Existing or potential new clients can write and ask for a copy of the paper

29th EU PVSEC 22-26 Sep 2014 Amsterdam, The Netherlands

( 65 ) "5BV.2.54 How Simulation Program kWh/kWp Predictions Depend on PV Model Discrepancies"
Steve Ransome
Existing or potential new clients can write and ask for a copy of the paper

( 64 ) "5BV.2.18 Using the Loss Factors Model to Improve PV Performance Modelling for Industrial Needs " Steve Ransome and Juergen Sutterlueti (Tel Solar)
Existing or potential new clients can write and ask for a copy of the paper

40th PVSC 8-13 Jun 2014 Denver, Colorado, USA

( 63 ) "#581 Energy Modelling and Rating - Area 9 Plenary"
Paper available now for conference attendees at PVSC website

10th PVSAT 23-25 Apr 2014 Crest, Loughborough, UK

( 62 ) "Worldwide PV energy yield sensitivity from a variety of input losses"
Existing or potential new clients can write and ask for a copy of the paper


2013

"Energy Generation of PV Systems - Performance Risks and Due Diligence 9th Oct 2013 Loughborough University"

( 61 ) "Accuracy of energy yield simulation" Invited talk
Existing or potential new clients can write and ask for a copy of the paper

28th EU PVSEC 30 Sep-04 Oct 2013 Paris, France

( 60 ) blank '4CO.11.1 Outdoor PV Performance Evaluation of Three Different Models: Single-diode, SAPM and Loss Factor Model'
Joshua S. Stein(1), Juergen Sutterlueti(2), Steve Ransome(3), Clifford W. Hansen(1), Bruce H. King(1)
(1) Sandia National Laboratories; (2) TEL Solar; (3) SRCL

( 59 ) 4AV.5.52 A "Variable Coefficient 1-Diode Model" VC1D for More Accurate Energy Modelling'
Existing or potential new clients can write and ask for a copy of the paper

39th PVSC 16-21 Jun 2013 Tampa, Florida, USA

( 58 ) "Estimating the Sensitivity of Energy Performance from Optimising Different PV Technologies World Wide"
by Steve Ransome (SRCL) and Juergen Sutterlueti (TEL) - System Performance Modeling session, 17 June 2013 3:30 PM

Paper available at the PVSC39 website - Existing or potential new clients can write and ask for a copy of the paper

PV Systems Symposium, Santa Clara, CA, USA - 29 Apr to 3 May 2013

( 57 ) 'The sensitivity and limitations of present and alternative PV models'
Steve Ransome (SRCL) and Juergen Sutterlueti (TEL)'
available at PVPMC http://pvpmc.org/documents/

9th PVSAT 10-12 Apr 2013 Swansea, UK

( 56 ) Invited talk "Status in Measurement and Modelling of PV Systems performance"
SRCL clients and attendees at the conference can request a colour pdf of the presentation

9th Workshop on the Future Direction of Photovoltaics, 7-8 March, 2013 Tokyo Institute of Technology, Japan

( 55 ) "Measurement and Modelling of PV System performance"
SRCL clients and attendees at the conference can request a colour pdf of the presentation


2012

27th EU PVSEC 24-28 Sept Frankfurt Germany

( 54 ) blank "4CO.12.6 The sensitivity of LCOE to PV technology including degradation, seasonal annealing, spectral and other effects"
Steve Ransome(SRCL)and Juergen Sutterlueti (Oerlikon Solar)

( 53 ) blank "4EO.3.5 Understanding Module Performance further: validation of the novel loss factors model and its extension to ac arrays"
Stefan Sellner, Juergen Sutterlueti, Ludwig Schreier (Oerlikon Solar) and Steve Ransome (SRCL)

38th IEEE PVSC 3-8 June, 2012; Austin TX, USA

( 52 ) blank #854 Advanced PV module performance characterization and validation using the novel Loss Factors Model"
Stefan Sellner, Juergen Sutterlueti, Ludwig Schreier (Oerlikon Solar) and Steve Ransome (SRCL)

( 51 ) blank #898 PV technology differences and discrepancies in modelling between simulation programs and measurements"
invited talk in section 9.6 by Steve Ransome of SRCL with Juergen Sutterlueti and Stefan Sellner (Oerlikon Solar)

PV SAT 8 2-4 April 2012 Northumbria University, UK

( 50 ) "THE OPTIMUM WAY TO PREDICT AND VALIDATE PV PERFORMANCE"
- SRCL clients may request a copy of the talk by e-mail


2011

26th EU PVSEC 8 September 2011; Hamburg, Germany

( 49 ) paper powerpoint "4AV.2.41 Characterising PV Modules under Outdoor Conditions: What's Most Important for Energy Yield"
J. Sutterlueti et al - Oerlikon Solar, S. Ransome - SRCL

( 48 ) paper "4DO.6.4 Improving and Understanding kWh/kWp Simulations"
- SRCL clients may request a copy of the talk by e-mail

37th IEEE PVSC 24 June, 2011; Seattle, USA

( 47 ) word "How kWh/kWp Modelling and Measurement Comparisons Depend on Uncertainty and Variability"
- SRCL clients may request a copy of the talk by e-mail

MIDNIGHT SUN CONFERENCE - RENEWABLE ENERGY IN THE NORTH June 14-16 2011, Narvik University College Norway

( 46 ) "Measuring and modelling PV technologies worldwide"
- conference attendees and SRCL clients may request a copy of the talk by e-mail

PVSAT 7 Edinburgh, Scotland 7th Apr 2011

(45) paper "Updated status on discrepancies between measured and modelled outdoor performance"


2010

Dutch Joint Solar Panel R&D Seminar 29 Sept 2010

( 44 ) Invited talk "Comparing indoor and outdoor PV performance measurements with simulation program modelling redictions"
- conference attendees and SRCL clients may request a copy of the talk by e-mail

Sandia PV Performance Modeling Workshop, September 22-23, 2010

( 43 ) powerpoint Invited talk "Recent Studies of PV Performance Models"
- conference attendees and SRCL clients may request a copy of the talk by e-mail

5th World PV Conference Valencia Spain, 6-10 Sept 2010

(42) paper powerpoint "The present status of kWh/kWp measurements and modelling" 4CO-20-3

PVSC 35 Hawaii USA, 20-25June 2010

(41) paper "Comparing PV simulation models and methods with outdoor measurements"

Thin-Film Industry Forum 22-23 April 2010 Berlin

(40) Errors and uncertainties in kWh/kWp modelling, predictions and measurements" Invited paper - email me for a copy of presentation

PVSAT-6 24-26 March 2010 Southampton UK

(39) paper "A detailed comparison of measured outdoor performance vs. simulation program predictions for different PV technologies"

25th PV Symposium Bad Staffelstein Germany, Mar 2010

(38) powerpoint "kWh/kWp : Comparing modelling, claims and measurements" in English only

(37) "Outdoor charakterisierung, modellierung und technologie benchmark von Duennschicht-modulen" See Staffelstein proceedings or contact juergen.sutterlueti@oerlikon.com


2009

Jeju Korea 9-13 Nov 2009 19th PVSEC

(36) powerpoint "Errors and uncertainties in kWh/kWp modelling, predictions and measurements"

Hamburg 21-25Sep 2009 24th European PVSEC

(35) paper 4CO1.5 "Are kWh/kWp values really the best way to differentiate between PV technologies ?"

(34) 4CO1.3 "Outdoor characterisation and modelling of thin film modules and technology benchmarking"
see the DVD of the proceedings from the Hamburg conference or contact juergen.sutterlueti@oerlikon.com

PIRA Photovoltaics Summit Europe 2009, Crowne Plaza St Peter's Rome, Italy, 30 Jun- 2 Jul 2009

(33) Invited paper - email me for a copy of presentation

34th IEEE PVSC Philadelphia, USA, 7-12 Jun 2009

(32) paper "Understanding kWh/kWp by comparing measured data with modelling predictions and performance claims"

PIRA Photovoltaics Summit 2009, Hotel Kabuki, San Francisco, USA,&1-3 Jun 2009

(31) Invited paper - email me for a copy of presentation

PIRA Organic Photovoltaics, Doubletree Hotel Philadelphia, USA 27-29 Apr 2009

(30) Invited paper - email me for a copy of presentation

PVSAT-4 2-4 April 2009, Glyndwr University, Wrexham, Wales

(29) paper "Understanding Outdoor PV Performance Measurements"


2008

PIRA - PLASTIC AND THIN FILM PHOTOVOLTAICS 8-9 Dec 2008 Barcelona, Spain

(28) Invited paper - email me for a copy of presentation

International Workshop on PV System Monitoring and Performance Assessment - 30-31 Oct 2008 Nice France

(27) powerpoint Invited paper "Analysing array performance"

Valencia 1-5Sep 2008 23rd European PVSEC

(26) paper 4DO.9.6 "A Review of kWh/kWp Measurements, Analysis and Modelling"

(25) paper 4BV.1.58 "Array Performance Analysis Using Imperfect or Incomplete Input Data"

33rd IEEE PVSC 11-16 May 2008 San Diego

(24) paper powerpoint Area7 paper 521 "Modelling inaccuracies of PV energy yield simulations"

PVSAT-4   2-4 April 2008, University of Bath UK

(23) paper powerpoint "How accurate can PV energy yield simulations be?"


2007 and earlier with BP Solar

2007 Milan 22nd European PVSEC

(22) paper powerpoint 4EP.1.1 " How well do PV modelling algorithms really predict performance?"

2007 Durham PVSAT3

(21) paper "A Summary of Outdoor Testing and Modelling of PV Systems"

2007 22nd Staffelstein

(20) paper powerpoint "Eight Years Testing and Modelling PV Systems - Worldwide" - German Only Paper


2006 Dresden 21st European PVSEC

(19) paper 5CP.3.1 "4% Higher Energy Conversion from BP 7180 Modules"

2006 21st Staffelstein

(18) word powerpoint "4% Increased energy collection from 83 kWp test -Saturn 7-series" German only Paper


2005 Barcelona 20th European PVSEC Papers

(17) paper 6DV.4.32 "Why Hourly Averaged Measurement Data Insufficient to Model PVSystem Performance Accurately"

(16) paper 5CO.2.1 "Increased Energy Collection using Anti-Reflective Coated Glass"

2005 CREST Loughborough PVSAT-2 Papers

(15) paper "Findings from Worldwide Studies of PV Module and System Performance"

2005 20th Staffelstein Papers

(14) paper "External Performance of BP Solar 7180 Modules in Australia and Germany" - German only Paper

2005 Orlando 31st PVSC Papers

(13) paper "A Summary of 6 years performance modelling from 100+ sites worldwide"

(12) paper powerpoint "Advanced analysis of PV system performance using normalised measurement data" winner of "outstanding poster award"

(11) paper "Crystalline silicon photovoltaic modules with anti-reflective coated glass"


2004 Paris 19th PVSEC Papers

(10) paper 5BV_1_56 "Can grid tied PV systems be characterised with only monthly average values of PR ?"

(09) paper 5BV_1_57 "Quantifying PV losses from equivalent circuit models, cells, modules and arrays"


2003 Osaka WCPEC3 Papers

(08) paper 7P-B3-03 "An overview of 4 years of kWh/kWp monitoring"

(07) paper 7P-B3-69 "Optimising pv array performance using real time measurements"

2003 CREST Loughborough PVSAT-1 Papers

(06) paper "A 4 year study of kWh/kWp modelling of different technologies at more than 50 sites worldwide"


2002 Rome PV for Europe Papers

(05) paper OE6.2 "Understanding and correcting kWh/kWp measurements"

2002 New Orleans 29th IEEE PVSC Papers

(04) paper 402.7 "Performance of BP Solar Tandem Junction Amorphous Silicon Modules"

(03) paper 503.1 "kWh/kWp Dependency on PV Technology and Balance of Systems Performance"


2001 Munich 17th PVSEC Papers

(02) paper OA4.3 "Analysis of Measured kWh/kWp from Grid Tied Systems - Modelling Different Technologies"


2000 Anchorage 28th IEEE PVSC Papers

(01) powerpoint5P1.15 "Predicting kWh/kWp Performance For Amorphous Silicon Thin Film Modules"


Papers 2007 or earlier were written while working for bp solar 


Contact me steve@steveransome.com for information