Daniel Riley

Research Engineer

Author profile picture

Research Engineer

driley@sandia.gov

Biography

Daniel Riley is a research engineer in the Photovoltaics (PV) and Materials Technology Program at Sandia National Laboratories. The scope of Daniel’s work includes PV modules and systems with focus in data acquisition, characterization, and modeling. Daniel has also developed skills for characterizing and modeling non-standard PV technologies such as concentrating photovoltaics (CPV) and AC modules. Daniel received a bachelor’s in electrical engineering from the University of Missouri–Rolla in 2006, and a master’s in electrical engineering from the Missouri University of Science and Technology in 2011. His university research emphasis in communications and computer intelligence has been applied in the PV field, resulting in a patent for machine learning applications for PV system prognostics and health.

Publications

Benjamin Pierce, Jennifer Braid, Joshua Stein, Jim Augustyn, Daniel Riley, (2022). Solar Transposition Modeling via Deep Neural Networks with Sky Images IEEE Journal of Photovoltaics https://doi.org/10.1109/jphotov.2021.3120508 Publication ID: 76425

Joseph Coston, Charles Robinson, Bruce King, Jennifer Braid, Daniel Riley, Joshua Stein, (2021). Effects of Solar Angle of Incidence on Intramodular Photovoltaic Irradiance Uniformity Conference Record of the IEEE Photovoltaic Specialists Conference https://doi.org/10.1109/PVSC43889.2021.9518595 Publication ID: 78824

Benjamin Pierce, Jennifer Braid, Joshua Stein, Jim Augustyn, Daniel Riley, (2021). Solar Transposition Modeling via Deep Neural Networks with Sky Images https://www.osti.gov/servlets/purl/1883479 Publication ID: 78907

Benjamin Pierce, Jennifer Braid, Joshua Stein, Jim Augustyn, Daniel Riley, (2021). Solar Transposition Modeling via Deep Neural Networks with Sky Images https://doi.org/10.2172/1877838 Publication ID: 78910

Joseph Coston, Joshua Stein, Charles Robinson, Jennifer Braid, Daniel Riley, Bruce King, (2021). Effects of Solar Angle of Incidence on Intramodular Photovoltaic Irradiance Uniformity https://doi.org/10.2172/1872905 Publication ID: 78825

Daniel Riley, Joshua Stein, (2020). Characterizing and Modeling AC PV Modules https://www.osti.gov/servlets/purl/1819261 Publication ID: 74766

Daniel Riley, Charles Robinson, Joshua Stein, Bruce King, (2020). Degradation of Fielded PV Modules in Three Climates after Eight Years https://www.osti.gov/servlets/purl/1820259 Publication ID: 74774

Laurie Burnham, Daniel Riley, Jennifer Braid, (2020). Increasing Photovoltaic Efficiency in Snowy Climates: Design Considerations https://www.osti.gov/servlets/purl/1820560 Publication ID: 74835

Matthew Prilliman, Joshua Stein, Daniel Riley, Govindasamy Tamizhmani, (2020). Transient Weighted Moving-Average Model of Photovoltaic Module Back-Surface Temperature IEEE Journal of Photovoltaics https://doi.org/10.1109/JPHOTOV.2020.2992351 Publication ID: 73346

Jennifer Braid, Daniel Riley, Joshua Pearce, Laurie Burnham, (2020). Image Analysis Method for Quantifying Snow Losses on PV Systems https://www.osti.gov/servlets/purl/1807431 Publication ID: 73785

Jennifer Braid, Daniel Riley, Joshua Pearce, Laurie Burnham, (2020). Image Analysis Method for Quantifying Snow Losses on PV Systems https://www.osti.gov/servlets/purl/1807432 Publication ID: 73786

Daniel Riley, Charles Robinson, Joshua Stein, Bruce King, (2019). 8-Year Degradation Assessment of Fielded PV in Three Climates – Poster for DOE Showcase https://www.osti.gov/servlets/purl/1640783 Publication ID: 69166

Laurie Burnham, Daniel Riley, Bevan Walker, Joshua Pearce, (2019). Performance of Bifacial Modules Dual-Axis Trackers in a High-Latitude High-Albedo Environment https://doi.org/10.1109/PVSC40753.2019.8980964 Publication ID: 69169

Clifford Hansen, Daniel Riley, (2019). Open-source Software for Solar Power: Update https://www.osti.gov/servlets/purl/1640607 Publication ID: 68998

Daniel Riley, Laurie Burnham, Bevan Walker, Joshua Pearce, (2019). Differences in Snow Shedding in Photovoltaic Systems with Framed and Frameless Modules Conference Record of the IEEE Photovoltaic Specialists Conference https://doi.org/10.1109/PVSC40753.2019.8981389 Publication ID: 69095

Daniel Riley, Laurie Burnham, Bevan Walker, Joshua Pearce, (2019). Snow Shedding Differences between Framed and Frameless Modules – Poster https://www.osti.gov/servlets/purl/1640744 Publication ID: 69109

Laurie Burnham, Daniel Riley, Joshua Pearce, Bevan Walker, (2019). Performance of Bifacial Modules on a Dual-Axis Tracker in a High-Albedo Environment https://www.osti.gov/servlets/purl/1639220 Publication ID: 66955

Bruce King, Charles Robinson, Craig Carmignani, Daniel Riley, C. Jones, (2018). Application of the Sandia Array Performance Model to Assess Multiyear Performance of Fielded CIGS PV Arrays 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 – A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC https://www.osti.gov/servlets/purl/1529756 Publication ID: 62701

Daniel Riley, Joshua Stein, Craig Carmignani, (2018). Performance of Bifacial PV Modules with MLPE vs. String Inverters 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 – A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC https://doi.org/10.1109/PVSC.2018.8547351 Publication ID: 62713

Daniel Riley, Joshua Stein, Craig Carmignani, (2018). Performance of Bifacial PV Modules with MLPE vs. String Inverters https://doi.org/10.1109/PVSC.2018.8547351 Publication ID: 63605

Clifford Hansen, Joshua Stein, Daniel Riley, Matthew Lave, Chris Deline, Fatima Toor, (2018). Field Performance of Bifacial PV Modules and Systems https://www.osti.gov/servlets/purl/1581945 Publication ID: 63707

Bruce King, Charles Robinson, Craig Carmignani, Daniel Riley, Christian Jones, (2018). Application of the Sandia Array Performance Model to Assess Multiyear Performance of Fielded CIGS PV Arrays https://doi.org/10.1109/PVSC.2018.8548108 Publication ID: 62700

Daniel Riley, Joshua Stein, Clifford Hansen, (2018). 2018 IEEE PVSC Tutorial PV System Modeling https://www.osti.gov/servlets/purl/1511110 Publication ID: 61880

Clifford Hansen, Joshua Stein, Daniel Riley, Matthew Lave, Chris Deline, Fatima Toor, (2018). Field Performance of Bifacial PV Modules and Systems https://www.osti.gov/servlets/purl/1513695 Publication ID: 59220

Clifford Hansen, Daniel Riley, Chris Deline, Fatima Toor, Joshua Stein, (2017). A Detailed Performance Model for Bifacial PV Modules https://www.osti.gov/servlets/purl/1478165 Publication ID: 53545

Clifford Hansen, Daniel Riley, Chris Deline, Fatima Toor, Joshua Stein, (2017). A Detailed Performance Model for Bifacial PV Modules https://www.osti.gov/servlets/purl/1478164 Publication ID: 53546

Joshua Stein, Daniel Riley, Matthew Lave, Chris Deline, Fatima Toor, Clifford Hansen, (2017). Outdoor Field Performance from Bifacial Photovoltaic Modules and Systems https://www.osti.gov/servlets/purl/1474810 Publication ID: 53164

Joshua Stein, Daniel Riley, Matthew Lave, Chris Deline, Fatima Toor, Clifford Hansen, (2017). Outdoor Field Performance of Bifacial PV Modules and Systems https://www.osti.gov/servlets/purl/1474824 Publication ID: 53186

Joshua Stein, Daniel Riley, Matthew Lave, Clifford Hansen, Chris Deline, Fatima Toor, (2017). Outdoor Field Performance of Bifacial PV Modules and Systems https://www.osti.gov/servlets/purl/1459780 Publication ID: 57152

Bill Marion, Sara MacAlpine, Chris Deline, Amir Asgharzadeh, Fatima Toor, Daniel Riley, Joshua Stein, Clifford Hansen, (2017). A Practical Irradiance Model for Bifacial PV Modules https://www.osti.gov/servlets/purl/1460254 Publication ID: 57187

Clifford Hansen, Renee Gooding, Nathan Guay, Daniel Riley, Johnson Kallickal, Donald Ellibee, Amir Asgharzadeh, Bill Marion, Fatima Toor, Joshua Stein, (2017). A Detailed Model of Rear-Side Irradiance for Bifacial PV Modules Conference Record of the IEEE Photovoltaic Specialists Conference https://doi.org/10.1109/PVSC.2017.8366707 Publication ID: 57337

Joshua Stein, Daniel Riley, Matthew Lave, Clifford Hansen, Chris Deline, Fatima Toor, (2017). Outdoor Field Performance from Bifacial Photovoltaic Modules and Systems Conference Record of the IEEE Photovoltaic Specialists Conference https://doi.org/10.1109/PVSC.2017.8366042 Publication ID: 56979

Clifford Hansen, Daniel Riley, Joshua Stein, (2017). 2017 IEEE PVSC tutorial PV system modeling https://www.osti.gov/servlets/purl/1513607 Publication ID: 56735

Clifford Hansen, Renee Gooding, Nathan Guay, Daniel Riley, Johnson Kallickal, Donald Ellibee, Amir Asgharzadeh, Bill Marion, Fatima Toor, Joshua Stein, (2017). A Detailed Model of Rear-Side Irradiance for Bifacial PV Modules https://www.osti.gov/servlets/purl/1458397 Publication ID: 57012

Daniel Riley, Clifford Hansen, Joshua Stein, Matthew Lave, Johnson Kallickal, Bill Marion, Fatima Toor, (2017). A Performance Model for Bifacial PV Modules https://www.osti.gov/servlets/purl/1458425 Publication ID: 57029

Clifford Hansen, Daniel Riley, (2017). Performance model for bifacial PV modules https://www.osti.gov/servlets/purl/1367197 Publication ID: 56364

Bruce King, Clifford Hansen, Daniel Riley, Charles Robinson, Larry Pratt, (2016). Outdoor test and analysis procedures for generating coefficients for the Sandia Array Performance Model Conference Record of the IEEE Photovoltaic Specialists Conference https://doi.org/10.1109/PVSC.2016.7750225 Publication ID: 50367

Joshua Stein, Matthew Lave, Daniel Riley, (2016). Bifacial PV: Field results from the US on bifacial gains from modules strings and systems https://www.osti.gov/servlets/purl/1395805 Publication ID: 52491

Daniel Riley, Joshua Stein, (2016). The Regional Test Center Data Transfer System https://doi.org/10.2172/1431479 Publication ID: 52461

Patrick Burton, Alex Hendrickson, Stephen Ulibarri, Daniel Riley, William Boyson, Bruce King, (2016). Pattern Effects of Soil on Photovoltaic Surfaces IEEE Journal of Photovoltaics https://doi.org/10.1109/jphotov.2016.2567100 Publication ID: 49824

Daniel Riley, Jeffrey Fleming, Gerald Gallegos, (2016). A Photovoltaic System Payback Calculator https://doi.org/10.2172/1259560 Publication ID: 50573

Bruce King, Clifford Hansen, Daniel Riley, Charles Robinson, Larry Pratt, (2016). Procedure to Determine Coefficients for the Sandia Array Performance Model (SAPM) https://doi.org/10.2172/1256510 Publication ID: 50384

Bruce King, Clifford Hansen, Daniel Riley, Charles Robinson, Larry Pratt, (2016). Outdoor Test and Analysis Procedures for Generating Coefficients for the Sandia Array Performance Model https://doi.org/10.1109/PVSC.2016.7750225 Publication ID: 50387

Anton Driesse, Joshua Stein, Daniel Riley, Craig Carmignani, (2015). Monitoring current, voltage and power in photovoltaic systems 2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015 https://www.osti.gov/servlets/purl/1280751 Publication ID: 44745

Bruce King, Clifford Hansen, Joshua Stein, Daniel Riley, Sigifredo Gonzalez, (2015). Final Technical Report: Characterizing Emerging Technologies https://doi.org/10.2172/1233826 Publication ID: 42085

Daniel Riley, (2015). Performance Model for Characterizing AC Modules and Predicting Their Power https://www.osti.gov/servlets/purl/1256577 Publication ID: 43847

Joshua Stein, Clifford Hansen, Daniel Riley, (2015). 2015 IEEE PVSC Tutorial on PV System Performance https://www.osti.gov/servlets/purl/1257168 Publication ID: 43912

Bruce King, Daniel Riley, Charles Robinson, Larry Pratt, (2015). Recent Advancements in Outdoor Measurement Techniques for Angle of Incidence Effects https://www.osti.gov/servlets/purl/1257563 Publication ID: 43936

Daniel Riley, (2015). Mapping HCPV Module or System Response to Solar Incident Angle https://www.osti.gov/servlets/purl/1256259 Publication ID: 43747

Kenneth Armijo, Benjamin Yang, Daniel Riley, Olga Lavrova, Sigifredo Gonzalez, (2015). Predictive Reliability for AC Photovoltaic Modules Based on Electro-Thermal Phenomena https://doi.org/10.1109/PVSC.2015.7355989 Publication ID: 44008

Kenneth Armijo, Benjamin Yang, Daniel Riley, Olga Lavrova, Sigifredo Gonzalez, Henry Lomasney, (2015). Predictive Reliability for AC Photovoltaic Modules Based on Electro-Thermal Phenomena https://doi.org/10.1109/PVSC.2015.7355989 Publication ID: 44009

Daniel Riley, Daniel Riley, (2015). Performance Model for Characterizing AC Modules and Predicting Their Power https://doi.org/10.1109/PVSC.2015.7356177 Publication ID: 44016

Bruce King, Daniel Riley, Charles Robinson, Larry Pratt, (2015). Recent Advances in Outdoor Measurement Techniques for Angle of Incidence Effects https://www.osti.gov/servlets/purl/1341487 Publication ID: 44022

Daniel Riley, (2015). Mapping HCPV Module or System Response to Solar Incident Angle https://www.osti.gov/servlets/purl/1248643 Publication ID: 42902

Patrick Burton, Bruce King, Daniel Riley, (2015). Predicting the spectral effects of soils on high concentrating photovoltaic systems Solar Energy https://doi.org/10.1016/j.solener.2014.11.022 Publication ID: 38066

Kenneth Armijo, Benjamin Yang, Daniel Riley, Olga Lavrova, Sigifredo Gonzalez, Henry Lomasney, (2015). Predictive Reliability for AC Photovoltaic Modules Based on Electro-Thermal Phenomena https://www.osti.gov/servlets/purl/1237882 Publication ID: 41429

Daniel Riley, Clifford Hansen, (2015). Sun-relative pointing for dual-axis solar trackers employing azimuth and elevation rotations Journal of Solar Energy Engineering, Transactions of the ASME https://doi.org/10.1115/1.4029379 Publication ID: 40475

Jimmy Quiroz, Sigifredo Gonzalez, Bruce King, Daniel Riley, Jay Johnson, Joshua Stein, (2014). Photovoltaic Microinverter Testbed for Multiple Device Interoperability https://doi.org/10.2172/1490540 Publication ID: 39561

Anton Driesse, Joshua Stein, Daniel Riley, Craig Carmignani, (2014). Sampling and Filtering in Photovoltaic System Performance Monitoring https://doi.org/10.2172/1323558 Publication ID: 39237

Robert Andrews, Joshua Stein, Clifford Hansen, Daniel Riley, (2014). Introduction to the Open Source PV LIB for Python Photovoltaic System Modeling Package https://www.osti.gov/servlets/purl/1241774 Publication ID: 38910

Daniel Riley, Joshua Stein, Clifford Hansen, (2014). 2014 IEEE PVSC Tutorial on PV System Performance Modeling https://www.osti.gov/servlets/purl/1714482 Publication ID: 41032

Daniel Riley, Armando Fresquez, (2014). Determining the Effect of Temperature on Microinverter Inversion Efficiency https://doi.org/10.1109/PVSC.2014.6925179 Publication ID: 40901

Bruce King, Daniel Riley, Clifford Hansen, Matthew Erdman, John Gabriel, Kanchan Ghosal, (2014). HCPV characterization: Analysis of fielded system data AIP Conference Proceedings https://doi.org/10.1063/1.4897077 Publication ID: 40329

Patrick Burton, Bruce King, Daniel Riley, (2013). Predicting the Spectral Effects of Soils on Multijunction Photovoltaic Systems https://www.osti.gov/servlets/purl/1677566 Publication ID: 31915

Daniel Riley, (2013). Performance model for Semprius module RDD-MOD-296 PSEL 2941 https://www.osti.gov/servlets/purl/1673560 Publication ID: 36319

Jose Cruz-Campa, Benjamin Anderson, Vipin Gupta, Anna Tauke-Pedretti, Jeffrey Cederberg, Scott Paap, Carlos Sanchez, Christopher Nordquist, Gregory Nielson, Michael Saavedra, Mark Ballance, Janet Nguyen, Charles Alford, Daniel Riley, Murat Okandan, Anthony Lentine, William Sweatt, Bradley Jared, Paul Resnick, Jay Kratochvil, (2013). Flat plate concentrators with large acceptance angle enabled by micro cells and mini lenses: performance evaluation https://www.osti.gov/servlets/purl/1296815 Publication ID: 35896

Daniel Riley, Joshua Stein, Jay Kratochvil, (2013). Testing and Characterization of PV Modules with Integrated Microinverters https://doi.org/10.1109/PVSC.2013.6744270 Publication ID: 34113

Clifford Hansen, Daniel Riley, (2013). Determining Coefficients for the Sandia Array Performance Model https://www.osti.gov/servlets/purl/1079168 Publication ID: 33525

Daniel Riley, Jay Johnson, (2012). Photovoltaic Prognostics and Health Management using Learning Algorithms https://www.osti.gov/servlets/purl/1060445 Publication ID: 29759

Daniel Riley, (2012). Calibration of the Sandia Array Performance Model Using Indoor Measurements https://doi.org/10.1109/PVSC.2012.6318229 Publication ID: 29760

Jennifer Granata, Neil Sorensen, Daniel Riley, (2012). Design for Reliability: A Low Concentration PV Case Study https://www.osti.gov/biblio/1064396 Publication ID: 28785

Jennifer Granata, Neil Sorensen, Daniel Riley, (2012). Design for Reliability: A Low Concentration PV Case Study https://www.osti.gov/biblio/1064104 Publication ID: 28786

Daniel Riley, (2011). Comparison of a Recurrent Neural Network PV System Model with a Traditional Component-Based PV System Model https://www.osti.gov/servlets/purl/1107516 Publication ID: 23226

Daniel Riley, Joshua Stein, (2010). Performance model assessment for multi-junction concentrating photovoltaic systems https://www.osti.gov/biblio/991836 Publication ID: 17723

Daniel Riley, Joshua Stein, (2010). Performance model assessment for multi-junction concentrating photovoltaic systems https://www.osti.gov/biblio/1028935 Publication ID: 17724

Joshua Jacob, Christopher Cameron, Jennifer Granata, Daniel Riley, (2009). Quantifying the effects of averaging and sampling rates on PV system and weather data https://www.osti.gov/biblio/966624 Publication ID: 16251

Daniel Riley, Christopher Cameron, Joshua Jacob, Jennifer Granata, (2009). Quantifying the effects of averaging and sampling rates on PV system and weather data https://www.osti.gov/biblio/966620 Publication ID: 16255

Daniel Riley, (2008). COMPARISON OF PV SYSTEM PERFORMANCE-MODEL PREDICTIONS WITH MEASURED PV SYSTEM PERFORMANCE https://doi.org/10.1109/PVSC.2008.4922865 Publication ID: 13717

Daniel Riley, (2008). COMPARISON OF PV SYSTEM PERFORMANCE-MODEL PREDICTIONS WITH MEASURED PV SYSTEM PERFORMANCE https://doi.org/10.1109/PVSC.2008.4922865 Publication ID: 13718

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