GCI Clean Energy Discussion Papers

GCI Discussion Paper No.6Discussion Paper No. 6
Projecting Solar PV Yield of the Solar Array Installed at UQ Gatton Campus Using NREL’s SAM Model PDF (2 MB)

Abstract
The viability of utility scale solar PV farms will depend critically upon the annual production of such farms. A crucial determinant of solar PV yield will be prevailing solar irradiance and weather conditions.  In Australia, the combined effects of weather relating to solar irradiance, temperature and rainfall on PV yield is likely to be closely linked to the El NiƱo–Southern Oscillation ENSO cycle. To investigate this we use NREL’s SAM model to simulate electricity production from a 3.275 megawatt pilot solar PV plant at the University of Queensland’s Gatton Campus. A key finding was that the best simulated PV yields were obtained during 2013 and 2014 when ENSO neutral conditions but with an El Nino bias prevailed. The worst years were 2010 and 2011 which were characterised by moderate and weak La Nina phases of ENSO. All other years considered had average PV yield outcomes including 2015 which experienced a very strong El Nino event.


Discussion Paper No. 5
Assessment of the Comparative Productive Performance of Three Solar PV Technologies Installed at UQ Gatton Campus Using The NREL SAM Model PDF (2.6 MB)

Abstract
The economic assessment of the viability of different types of solar PV tracking technologies centres on assessment of whether the annual production of the different tracking technologies is increased enough to compensate for the higher cost of installation and operational expenditures incurred by the tracking systems. To investigate this issue, we use the NREL’s SAM model to simulate electricity production from three representative solar PV systems installed at Gatton. In these simulations we use hourly solar irradiance, weather and surface albedo data, technical data relating to both module and inverter characteristics and impacts associated with module soiling and near-object shading. A key finding was that over the period 2007 to 2015, average increases in annual production of between 23.9 and 24.3 per cent and 38.0 and 39.1 per cent were obtained for Single Axis and Dual Axis tracking systems relative to the Fixed Tilt system.


Levelised Cost of Energy (LCOE) of Three Solar PV Technologies Installed at UQ Gatton Campus

Discussion Paper No. 4
Levelised Cost of Energy (LCOE) of Three Solar PV Technologies Installed at UQ Gatton Campus  PDF (2.8 MB)

Abstract
Economic assessment of the viability of different types of solar PV tracking technologies centres on assessment of whether the annual production of the different tracking technologies is increased enough relative to a benchmark Fixed Tilt system to compensate for the higher cost of installation and operation incurred by the tracking systems. To investigate this issue, we calculated the LCOE of three representative solar PV systems. These calculations depend crucially on assumptions made about ($/kW) construction costs as well as annual capacity factors of the three solar technologies considered. A key finding was that the Single Axis Tracking technology was the most cost competitive, followed by a Fixed Tilt system. A Dual Axis Tracking system was the least cost competitive technology of those considered. We also considered how LCOE could underpin a ‘Contract-for-Difference’ feed-in tariff scheme.


Discussion Paper No. 3
Comparative Productive Performance of Three Solar PV Technologies Installed at UQ Gatton Campus PDF (3 MB)

Abstract
Economic assessment of the viability of different types of solar PV tracking technologies centres on assessment of whether the annual production of the different tracking technologies is increased enough relative to a benchmark Fixed Tilt system to compensate for the higher installation and operational costs incurred by the tracking systems. To investigate this issue, we use the PVsyst software to simulate electricity production from three representative solar PV systems installed at Gatton. In these simulations we use hourly solar irradiance, weather and surface albedo data, technical data relating to both module and inverter characteristics and impacts associated with module soiling and shading. A key finding was that over the period 2007 to 2015, average increases in simulated annual production of between 17.7 and 17.9 per cent and 36.5 and 36.7 per cent were obtained for Single-Axis and Dual-Axis tracking systems relative to the Fixed Tilt system.


Discussion Paper No. 2
The Battery Energy Storage System PDF (3 MB)

Abstract
A 600 kW, 760 kWh Battery Energy Storage System (BESS) has recently been integrated with The University of Queensland (UQ) Gatton solar PV plant. This addition to the Australian Government funded 3.275 MW pilot PV plant brings a new dimension to UQ’s large-scale PV grid integration research. This document intends to introduce the BESS at UQ Gatton and share some of the aspects considered during the testing and commissioning process to make this facility suitable for research and development on BESS applications for enabling large-scale PV integration.

 

 

 


Foundation Papers
Delivering a Competitive Australian Power System PDF (8.7 MB)

Abstract
Due to its reliance on fossil fuels, Australia’s power system is now among the least resilient of its global competitors. The three part series, “delivering a competitive Australian power system” seeks to address this issue. In this, the first installment, we compare the strategic direction of Australia’s power system to other resource rich countries.

 


 

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