Photovoltaic Cleaning Frequency Optimization Under Different Degradation Rate Patterns

Micheli, Leonardo; Theristis, Marios; Talavera, Diego L.; Almonacid, Florencia; Stein, Joshua S.; Fernandez, Eduardo F.

doi:10.1016/j.renene.2020.11.044

Title: Photovoltaic Cleaning Frequency Optimization Under Different Degradation Rate Patterns

Abstract

Dust accumulation significantly affects the performance of photovoltaic modules and its impact can be mitigated by various cleaning methods. Optimizing the cleaning frequency is essential to minimize the soiling losses and, at the same time, the costs. However, the effectiveness of cleaning lowers with time because of the reduced energy yield due to degradation. Additionally, economic factors such as the escalation in electricity price and inflation can compound or counterbalance the effect of degradation on the soiling mitigation profits. The present study analyzes the impact of degradation, escalation in electricity price and inflation on the revenues and costs of cleanings and proposes a methodology to maximize the profits of soiling mitigation of any system. Here, the energy performance and soiling losses of a 1 MW system installed in southern Spain were analyzed and integrated with theoretical linear and nonlinear degradation rate patterns. The Levelized Cost of Energy and Net Present Value were used as criteria to identify the optimum cleaning strategies. The results showed that the two metrics convey distinct cleaning recommendations, as they are influenced by different factors. For the given site, despite the degradation effects, the optimum cleaning frequency is found to increase with time of operation.

Authors:

Micheli, Leonardo ^[1]; Theristis, Marios ^[2]; Talavera, Diego L. ^[1]; Almonacid, Florencia ^[1]; Stein, Joshua S. ^[2]; Fernandez, Eduardo F. ^[1]

Univ. of Jaen (Spain)
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Publication Date:: Fri Nov 13 00:00:00 EST 2020

Research Org.:: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Sponsoring Org.:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office; USDOE National Nuclear Security Administration (NNSA)

OSTI Identifier:: 1725847

Alternate Identifier(s):: OSTI ID: 1778508

Report Number(s):: SAND-2020-12738J
Journal ID: ISSN 0960-1481; 692357

Grant/Contract Number:: AC04-94AL85000; NA0003525; 34366

Resource Type:: Accepted Manuscript

Journal Name:: Renewable Energy

Additional Journal Information:: Journal Volume: 166; Journal ID: ISSN 0960-1481

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 14 SOLAR ENERGY; Soiling; Cleaning Frequency; Optimization; Photovoltaics; Degradation Rate; Economics

Citation Formats


                    Micheli, Leonardo, Theristis, Marios, Talavera, Diego L., Almonacid, Florencia, Stein, Joshua S., and Fernandez, Eduardo F. Photovoltaic Cleaning Frequency Optimization Under Different Degradation Rate Patterns.  United States: N. p., 2020. 
Web.  doi:10.1016/j.renene.2020.11.044.

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                    Micheli, Leonardo, Theristis, Marios, Talavera, Diego L., Almonacid, Florencia, Stein, Joshua S., & Fernandez, Eduardo F. Photovoltaic Cleaning Frequency Optimization Under Different Degradation Rate Patterns.  United States.  https://doi.org/10.1016/j.renene.2020.11.044

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                    Micheli, Leonardo, Theristis, Marios, Talavera, Diego L., Almonacid, Florencia, Stein, Joshua S., and Fernandez, Eduardo F. Fri .  
"Photovoltaic Cleaning Frequency Optimization Under Different Degradation Rate Patterns".  United States.  https://doi.org/10.1016/j.renene.2020.11.044.  https://www.osti.gov/servlets/purl/1725847.

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@article{osti_1725847,

  title        = {Photovoltaic Cleaning Frequency Optimization Under Different Degradation Rate Patterns},

  author       = {Micheli, Leonardo and Theristis, Marios and Talavera, Diego L. and Almonacid, Florencia and Stein, Joshua S. and Fernandez, Eduardo F.},

  abstractNote = {Dust accumulation significantly affects the performance of photovoltaic modules and its impact can be mitigated by various cleaning methods. Optimizing the cleaning frequency is essential to minimize the soiling losses and, at the same time, the costs. However, the effectiveness of cleaning lowers with time because of the reduced energy yield due to degradation. Additionally, economic factors such as the escalation in electricity price and inflation can compound or counterbalance the effect of degradation on the soiling mitigation profits. The present study analyzes the impact of degradation, escalation in electricity price and inflation on the revenues and costs of cleanings and proposes a methodology to maximize the profits of soiling mitigation of any system. Here, the energy performance and soiling losses of a 1 MW system installed in southern Spain were analyzed and integrated with theoretical linear and nonlinear degradation rate patterns. The Levelized Cost of Energy and Net Present Value were used as criteria to identify the optimum cleaning strategies. The results showed that the two metrics convey distinct cleaning recommendations, as they are influenced by different factors. For the given site, despite the degradation effects, the optimum cleaning frequency is found to increase with time of operation.},

  doi          = {10.1016/j.renene.2020.11.044},

  journal      = {Renewable Energy},

  number       = ,

  volume       = 166,

  place        = {United States},

  year         = {Fri Nov 13 00:00:00 EST 2020},

  month        = {Fri Nov 13 00:00:00 EST 2020}

}

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Works referencing / citing this record:

Assessing the Techno-Economic Impact of Derating Factors on Optimally Tilted Grid-Tied Photovoltaic Systems
journal, February 2021

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Energies, Vol. 14, Issue 4
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Similar Records

Title: Photovoltaic Cleaning Frequency Optimization Under Different Degradation Rate Patterns

Abstract

Citation Formats

Impact of dust on solar photovoltaic (PV) performance: Research status, challenges and recommendations journal, December 2010

Extracting and Generating PV Soiling Profiles for Analysis, Forecasting, and Cleaning Optimization journal, January 2020

Effect of soiling on photovoltaic modules journal, October 2013

An investigation of the key parameters for predicting PV soiling losses: Key parameters for predicting PV soiling losses journal, January 2017

Light and Elevated Temperature Induced Degradation (LeTID) in a Utility-Scale Photovoltaic System journal, July 2020

Assessment of cost-competitiveness and profitability of fixed and tracking photovoltaic systems: The case of five specific sites journal, April 2019

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Nonlinear Photovoltaic Degradation Rates: Modeling and Comparison Against Conventional Methods journal, July 2020

Soiling losses for solar photovoltaic systems in California journal, September 2013

Solar position algorithm for solar radiation applications journal, January 2004

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A new approach based on economic profitability to sizing the photovoltaic generator in self-consumption systems without storage journal, April 2020

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Economics of seasonal photovoltaic soiling and cleaning optimization scenarios journal, January 2021

Fundamentals of soiling processes on photovoltaic modules journal, December 2018

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Investigation of soiling effects, dust chemistry and optimum cleaning schedule for PV modules in Lahore, Pakistan journal, May 2020

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Review of PV soiling particle mechanics in desert environments journal, September 2017

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PV system design with the effect of soiling on the optimum tilt angle journal, April 2019

Determination of the optimum orientations for the double-exposure, flat-plate collector and its reflectors journal, October 1966

Critical analysis and performance assessment of clear sky solar irradiance models using theoretical and measured data journal, August 1993

The effect of soiling on energy production for large-scale photovoltaic plants journal, May 2011

Techno-Economic Assessment of Soiling Losses and Mitigation Strategies for Solar Power Generation journal, October 2019

Soiling and rainfall effect on PV technology in rural Southern Europe journal, August 2020

Optimized Cleaning Cost and Schedule Based on Observed Soiling Conditions for Photovoltaic Plants in Central Saudi Arabia journal, May 2016

Review of Statistical and Analytical Degradation Models for Photovoltaic Modules and Systems as Well as Related Improvements journal, November 2018

PV degradation curves: non-linearities and failure modes: PV degradation curves: non-linearities and failure modes journal, September 2016

Quantifying Soiling Loss Directly From PV Yield journal, March 2018

Review of photovoltaic degradation rate methodologies journal, December 2014

Estimation of an Optimal PV Panel Cleaning Strategy Based on Both Annual Radiation Profile and Module Degradation journal, January 2020

Effect of soiling and sunlight exposure on the performance ratio of photovoltaic technologies in Santiago, Chile journal, April 2016

Assessing the Techno-Economic Impact of Derating Factors on Optimally Tilted Grid-Tied Photovoltaic Systems journal, February 2021

Impact of dust on solar photovoltaic (PV) performance: Research status, challenges and recommendations
journal, December 2010

Extracting and Generating PV Soiling Profiles for Analysis, Forecasting, and Cleaning Optimization
journal, January 2020

Effect of soiling on photovoltaic modules
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An investigation of the key parameters for predicting PV soiling losses: Key parameters for predicting PV soiling losses
journal, January 2017

Light and Elevated Temperature Induced Degradation (LeTID) in a Utility-Scale Photovoltaic System
journal, July 2020

Assessment of cost-competitiveness and profitability of fixed and tracking photovoltaic systems: The case of five specific sites
journal, April 2019

Predicting photovoltaic soiling losses using environmental parameters: An update
journal, October 2018

Nonlinear Photovoltaic Degradation Rates: Modeling and Comparison Against Conventional Methods
journal, July 2020

Soiling losses for solar photovoltaic systems in California
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Solar position algorithm for solar radiation applications
journal, January 2004

Reversible conductivity changes in discharge‐produced amorphous Si
journal, August 1977

A new approach based on economic profitability to sizing the photovoltaic generator in self-consumption systems without storage
journal, April 2020

Optimum cleaning schedule of photovoltaic systems based on levelised cost of energy and case study in central Mexico
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Economics of seasonal photovoltaic soiling and cleaning optimization scenarios
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Fundamentals of soiling processes on photovoltaic modules
journal, December 2018

Revised optical air mass tables and approximation formula
journal, January 1989

Investigation of soiling effects, dust chemistry and optimum cleaning schedule for PV modules in Lahore, Pakistan
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On the temporal modelling of solar photovoltaic soiling: Energy and economic impacts in seven cities
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Review of PV soiling particle mechanics in desert environments
journal, September 2017

Long-Term Soiling Analysis for Three Photovoltaic Technologies in Santiago Region
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PV system design with the effect of soiling on the optimum tilt angle
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Determination of the optimum orientations for the double-exposure, flat-plate collector and its reflectors
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The effect of soiling on energy production for large-scale photovoltaic plants
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Soiling and rainfall effect on PV technology in rural Southern Europe
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Optimized Cleaning Cost and Schedule Based on Observed Soiling Conditions for Photovoltaic Plants in Central Saudi Arabia
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Estimation of an Optimal PV Panel Cleaning Strategy Based on Both Annual Radiation Profile and Module Degradation
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