Performance parameters for grid-connected PV systems

Marion, Bill; Adelstein, J.; Boyle, K.; Hayden, H.; Hammond, B.; Fletcher, Tim D.; Canada, B.; Narang, David; Kimber, Adrianne; Mitchell, L.; Rich, G.; Townsend, T.

doi:10.1109/pvsc.2005.1488451

Cited by 333 publications

(233 citation statements)

References 2 publications

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“…An accurate prediction of system output [3] typically requires a model [8][9][10][11][12][13] that includes the effects of irradiance, temperature, shading, system design and the local environment.…”

Section: Methodology Differentiation Of Energiesmentioning

confidence: 99%

“…In this report, we apply the draft standard using a sophisticated model (PVsyst) [8] and a simple model (performance ratio) [14][15][16].…”

Section: Methodology Differentiation Of Energiesmentioning

confidence: 99%

“…Performance ratio (PR) [14][15][16] is a simple model that allows trivial prediction of the yield of a plant as in equation 1:…”

Section: Performance Ratio Evaluation (Case #2)mentioning

confidence: 99%

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Analysis of Photovoltaic System Energy Performance Evaluation Method

Kurtz¹,

Newmiller²,

Kimber³

et al. 2013

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Documentation of the energy yield of a large photovoltaic (PV) system over a substantial period can be useful to measure a performance guarantee, as an assessment of the health of the system, for verification of a performance model to then be applied to a new system, or for a variety of other purposes. Although the measurement of this performance metric might appear to be straightforward, there are a number of subtleties associated with variations in weather and imperfect data collection that complicate the determination and data analysis. A performance assessment is most valuable when it is completed with a very low uncertainty and when the subtleties are systematically addressed, yet currently no standard exists to guide this process.This report summarizes a draft methodology for an Energy Performance Evaluation Method, the philosophy behind the draft method, and the lessons that were learned by implementing the method. The general philosophy behind the methodology includes the following features:• The method is performance-model agnostic.• The performance model must not be inadvertently modified, when being implemented on the measured meteorological data sets, relative to the model that was used on the historical data set.

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Section: Methodology Differentiation Of Energiesmentioning

confidence: 99%

“…In this report, we apply the draft standard using a sophisticated model (PVsyst) [8] and a simple model (performance ratio) [14][15][16].…”

Section: Methodology Differentiation Of Energiesmentioning

confidence: 99%

See 1 more Smart Citation

Analysis of Photovoltaic System Energy Performance Evaluation Method

Kurtz¹,

Newmiller²,

Kimber³

et al. 2013

Self Cite

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“…Method (1), also called PVWatts [183], calculate maximum power as a function of only temperature and POA irradiance for POA > 125 W/m2. The formula is derived from measurements data of the operational performance of grid-connected PV illuminated under one sun intensity value (1000W/m 2 ), key reference value used in a Standard Test Conditions for PV/BIPV [184] [185] [186], although variants in light intensity from 100 to 1100 W/m 2 under temperature range 15-75°C are also applied [187].…”

Section: Building To Urban Scalementioning

confidence: 99%

State-of-the-art review of solar design tools and methods for assessing daylighting and solar potential for building-integrated photovoltaics

Jakica

2018

Renewable and Sustainable Energy Reviews

129

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Solar design can take many different forms across disciplines with different methodologies and goals, ranging from acquiring architectural visual effects to assessing illumination for daylighting and solar radiation potential on building surfaces for PV implementation. Furthermore, a capability of solar design methodologies and tools to accurately and time efficiently simulate light phenomena can greatly influence performance results and design decisions. This is especially important in complex cases such as dense urban settings with the significant surface shadowing, and vertical facades including daylighting devices and photovoltaics. Consequently, choosing a suitable approach and tool for each design phase is essential for achieving unique design and performance goals. This paper was carried out within the framework of IEA-PVPS Task 15 -BIPV and it aims to facilitate this decision for all parties involved in solar design process. Here presented, is an overview of almost 200 solar design tools, analyzing their numerous features regarding accuracy, complexity, scale, computation speed, representation as well as building design process integration in about 50 2D/3D, CAD/CAM and BIM software environments. Furthermore, tools from various fields have been analysed in a broad interdisciplinary context of solar design with a particular attention for being used for Daylighting and Building-Integrated Photovoltaics (BIPV) purposes. This approach should open many new perspectives on a potentially wider multidisciplinary usage and interpretation of solar design tools, sometimes well beyond their initial scope of work.

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“…where csystem is the un-subsidized installed system cost, Qyear is the total annual irradiation for an optimally-inclined array at the location [1], PR is the system's annual DC to AC performance ratio [2], P is the system DC capacity in Watts, and celec is the cost of electricity that is avoided by the system's local production. The usefulness of the SPB calculation is that it is an intuitive expression of expenses and returns.…”

Section: Introductionmentioning

confidence: 99%

Comparing energy payback and simple payback period for solar photovoltaic systems

Kessler¹

2017

E3S Web Conf.

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Abstract. Installing a solar photovoltaic (PV) array is both an environmental and a financial decision. The financial arguments often take priority over the environmental because installing solar is capital-intensive. The Simple Payback period (SPB) is often assessed prior to the adoption of solar PV at a residence or a business. Although it better describes the value of solar PV electricity in terms of sustainability, the Energy Payback period (EPB) is seldom used to gauge the merits of an installation. Using published estimates of embodied energies, EPB was calculated for four solar PV plants utilizing crystalline-Si technology: three being actual commercial installations located in the northeastern U.S., and a fourth installation based on a simulated 20-kilowatt roof-mounted system, in Wrocław, Poland. Simple Payback was calculated based on initial capital cost, and on the availability of avoided electricity costs based on netmetering tariffs, which at present in the U.S. are 1:1 credit ratio, and in Poland is 1:0.7 credit ratio. For all projects, the EPB time was estimated at between 1.9 and 2.6 years. In contrast, the SPB for installed systems in the northeastern U.S. ranged from 13.3 to 14.6 years, and was estimated at 13.5 years for the example system in Lower Silesia, Poland. The comparison between SPB and EPB shows a disparity between motivational time frames, in which the wait for financial return is considerably longer than the wait for net energy harvest and the start of sustainable power production.

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Performance parameters for grid-connected PV systems

Cited by 333 publications

References 2 publications

Analysis of Photovoltaic System Energy Performance Evaluation Method

Analysis of Photovoltaic System Energy Performance Evaluation Method

State-of-the-art review of solar design tools and methods for assessing daylighting and solar potential for building-integrated photovoltaics

Comparing energy payback and simple payback period for solar photovoltaic systems

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