PV System Availability from Commercial and Utility-Scale Systems

Chris Deline; Dirk Jordan; Kirsten Perry; Michael Deceglie; Robert White; Kevin Anderson

doi:10.2172/2323270

PV System Availability from Commercial and Utility-Scale Systems

Chris Deline, Dirk Jordan, Kirsten Perry, Michael Deceglie, Robert White, Kevin Anderson

Sandia National Laboratories

Research output: NREL › Presentation

Abstract

In the PV Fleet Performance Data Initiative, we partner with photovoltaic (PV) fleet owners to collect time-series PV production data, and publish aggregated, anonymized results. An assessment of system availability is conducted on 1128 systems which passed our data quality checks, and include cumulative energy meter data. Overall inverter availability is low in the first 6 months of system performance before reaching steady-state by the end of the first year. System-level aggregated data shows a median (P50) system availability of 0.99, and a lower P90 value of 0.95. A dependence on system size is also identified, with worse inverter availability results for larger PV systems. Potential causes of this effect are under investigation.

Original language	American English
Number of pages	20
DOIs	https://doi.org/10.2172/2323270
State	Published - 2024

NREL Publication Number

NREL/PR-5K00-88590

Keywords

availability
degradation
performance index
PV fleet
PV system
soiling

Access to Document

10.2172/2323270

https://www.nrel.gov/docs/fy24osti/88590.pdf

Cite this

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title = "PV System Availability from Commercial and Utility-Scale Systems",

abstract = "In the PV Fleet Performance Data Initiative, we partner with photovoltaic (PV) fleet owners to collect time-series PV production data, and publish aggregated, anonymized results. An assessment of system availability is conducted on 1128 systems which passed our data quality checks, and include cumulative energy meter data. Overall inverter availability is low in the first 6 months of system performance before reaching steady-state by the end of the first year. System-level aggregated data shows a median (P50) system availability of 0.99, and a lower P90 value of 0.95. A dependence on system size is also identified, with worse inverter availability results for larger PV systems. Potential causes of this effect are under investigation.",

keywords = "availability, degradation, performance index, PV fleet, PV system, soiling",

author = "Chris Deline and Dirk Jordan and Kirsten Perry and Michael Deceglie and Robert White and Kevin Anderson",

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doi = "10.2172/2323270",

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AU - Deline, Chris

AU - Jordan, Dirk

AU - Perry, Kirsten

AU - Deceglie, Michael

AU - White, Robert

AU - Anderson, Kevin

PY - 2024

Y1 - 2024

N2 - In the PV Fleet Performance Data Initiative, we partner with photovoltaic (PV) fleet owners to collect time-series PV production data, and publish aggregated, anonymized results. An assessment of system availability is conducted on 1128 systems which passed our data quality checks, and include cumulative energy meter data. Overall inverter availability is low in the first 6 months of system performance before reaching steady-state by the end of the first year. System-level aggregated data shows a median (P50) system availability of 0.99, and a lower P90 value of 0.95. A dependence on system size is also identified, with worse inverter availability results for larger PV systems. Potential causes of this effect are under investigation.

AB - In the PV Fleet Performance Data Initiative, we partner with photovoltaic (PV) fleet owners to collect time-series PV production data, and publish aggregated, anonymized results. An assessment of system availability is conducted on 1128 systems which passed our data quality checks, and include cumulative energy meter data. Overall inverter availability is low in the first 6 months of system performance before reaching steady-state by the end of the first year. System-level aggregated data shows a median (P50) system availability of 0.99, and a lower P90 value of 0.95. A dependence on system size is also identified, with worse inverter availability results for larger PV systems. Potential causes of this effect are under investigation.

KW - availability

KW - degradation

KW - performance index

KW - PV fleet

KW - PV system

KW - soiling

U2 - 10.2172/2323270

DO - 10.2172/2323270

M3 - Presentation

ER -

PV System Availability from Commercial and Utility-Scale Systems

Abstract

NREL Publication Number

Keywords

Access to Document

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Cite this