Performance loss rate of twelve photovoltaic technologies under field conditions using statistical techniques

Makrides, George; Zinßer, Bastian; Schubert, M.B.; Georghiou, George E.

doi:10.1016/j.solener.2014.02.011

Cited by 102 publications

(66 citation statements)

References 26 publications

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“…Similar results were obtained by another study, for which the average annual performance loss rate of the thin-fi lm systems was 1.78% per year. [ 40 ] A signifi cant decrease in degradation rates for post-2000 installations can be noted compared to the pre-2000 counterparts although they are statistically closer to 1% per year than to the safe 0.5% per year necessary to meet the 25-year commercial warranties. [ 39 ] Thus, although these statistics show a positive trend, there is room for continued improvement especially considering the fact that, in the future, the aim is to extend the lifetime of PV systems beyond the 25 year mark.…”

Section: Focus Of Qualifi Cation Studiesmentioning

confidence: 93%

Procedures and Practices for Evaluating Thin‐Film Solar Cell Stability

Roesch

Faber

Hauff

et al. 2015

Advanced Energy Materials

149

133

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functionality such as solution processing, have been the motivation driving these technologies. Additionally, compared to more conventional photovoltaics such as silicon solar cells, the device operation principles of many of these thin fi lm photovoltaic technologies are dependent on complex physical mechanisms, such as excitonic processes, photoinduced charge separation, functional material interfaces.Whereas initial research efforts were focused on understanding the underlying device physics and improvements in power conversion effi ciency, with increasing maturity of these photovoltaic technologies, growing efforts are now being invested into the understanding of underlying degradation mechanisms and the improvement of device stability. In addition to effi ciency, increased device lifetimes are fundamental requirements for transforming these technologies into an economic viability. In early studies, many stability investigations with various stress conditions were conducted in order to gain a better understanding of the degradation mechanisms. Currently, however, a consolidation towards some common stress scenarios for stability has been pursued in order to enable a better comparability between results of different research labs worldwide. A particularly well organized large scale effort was conducted within the framework of the International Summit on Organic Solar Cell Stability (ISOS), leading to the so-called ISOS-protocols. Nowadays, During the last few decades, and in some cases only the last few years, novel thin-fi lm photovoltaic (PV) technologies such as dye-sensitized solar cells (DSSC), organic solar cells (OPV), and, more recently, perovskite-based solar cells (PSC) have been growing in maturity with respect to device performance and device stability. Together with new material systems, novel device architectures have also been introduced. Both parameters will have an effect on the overall device stability. In order to improve the understanding of degradation effects and how they can be prevented, stress testing under different conditions is commonly applied. By careful combination of stress factors and thorough analysis of photovoltaic parameter decaying curves, an understanding of the underlying degradation pathways can be gained. With the help of standardized and accelerated stress tests, as described in the ISOS-protocols, statements concerning application lifetimes can fi nally be made and compared among different labs. Once a photovoltaic technology has proven long lasting durability, the ultimate barrier for entering the commercial market are the IEC tests, taking a deeper look on overall safety and reliability, not only on durability. Here, the most prominent stress tests are reviewed, discussed and extended with respect to learning the most about photovoltaic device stability.

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Section: Focus Of Qualifi Cation Studiesmentioning

confidence: 93%

Procedures and Practices for Evaluating Thin‐Film Solar Cell Stability

Roesch

Faber

Hauff

et al. 2015

Advanced Energy Materials

149

133

View full text Add to dashboard Cite

show abstract

“…Further, the energy yield of photovoltaic devices in operation is well known to exhibit seasonal variations (Makrides et al, 2014;Nikolaeva-Dimitrova et al, 2010;Ye et al, 2012;Makrides et al, 2013;Marion et al, 2014) which mainly depend on the installation site (latitude, shadows), on the average meteorological conditions (temperature, insolation, etc. ), and on the type of installation (tilt, orientation, degree of ventilation of the modules).…”

Section: Introductionmentioning

confidence: 99%

A simple approach to model the performance of photovoltaic solar modules in operation

2015

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“…This can be done by comparing (13) to the value of a plant in absence of the option to decide whether and when to sell the energy produced 35 . In this case the system looks like the new Italian energy contract scheme known as "Scambio sul Posto" (Net Metering), where the prosumer gets credits only for the value of the excess of electricity fed into the grid over a time period 36 .…”

Section: Simulations and Sensitivity Analysismentioning

confidence: 99%

Investing in Photovoltaics: Timing, Plant Sizing and Smart Grids Flexibility

2016

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In Italy and in many EU countries, the last decade was characterized by a large development of distributed generation power plants. Their presence determined new critical issues for the design and management of the overall energy system and the electric grid due to the presence of discontinuous production sources. It is commonly agreed that contingent problems that a¤ect local grids (e.g. ine¢ ciency, congestion rents, power outages, etc.) may be solved by the implementation of a "smarter" electric grid.The main feature of smarts grid is the great increase in production and consumption ‡exi-bility. Smart grids give producers and consumers, the opportunity to be active in the market and strategically decide their optimal production/consumption scheme. The paper provides a theoretical framework to model the prosumer's decision to invest in a photovoltaic power plant, assuming it is integrated in a smart grid. To capture the value of managerial ‡exibility, a real option approach is implemented. We calibrate and test the model by using data from the Italian energy market. JEL: Q42; C61; D81

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Performance loss rate of twelve photovoltaic technologies under field conditions using statistical techniques

Cited by 102 publications

References 26 publications

Procedures and Practices for Evaluating Thin‐Film Solar Cell Stability

Procedures and Practices for Evaluating Thin‐Film Solar Cell Stability

A simple approach to model the performance of photovoltaic solar modules in operation

Investing in Photovoltaics: Timing, Plant Sizing and Smart Grids Flexibility

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