These notes on the Solar Centre data should be taken into consideration when analysing the data. The notes represent significant or interesting events that potentially impact on the performance of PV technologies at the DKASC. It is not an exhaustive list of every minor or short term network or minor system outage.

Please email info@dkasolarcentre.com.au regarding any issues with the data that are not listed.

  1. Array Cleaning Times

    Annual cleaning of the solar arrays took place from Thursday, 3 August to Tuesday, 8 August 2017 inclusive. Systems were not de-energised. Individual cleaning times are listed here: DKASC Array Cleaning Times 2017

    Affects all source data for DKASC, Alice Springs


  2. System wide power outage

    Today the DKASC experienced a system wide outage. In fact the whole of Alice Springs township did. The outage commenced at approximately 09:45 and continued through to 13:05 when power to the DKASC site was restored and normal operation commenced again.

    Affects weather data for DKASC, Alice Springs

    Affects all source data for DKASC, Alice Springs


    Thu, 9 Nov 2017

  3. Replacement System Data and Archived System Data

    Over recent years a number of existing PV technologies at the DKASC have been removed and replaced with new PV technologies. Examples of this include Sites 9, 24, 25, 26 & 32. This process will continue into the future as per the requirements of the DKASC and the technology proponents who demonstrate their PV modules at this facility. It is important to note that when this swap out occurs the old PV system data will still be available in the historical download section of the website as an archived data file. The new PV system then takes the place of the archived system as the live and interactive data source. The one caveat to this process is that the cumulative energy total for that site is not reset to zero and data users for these sites should be aware that the cumulative energy total they download includes the total energy generated at the site over the lifetime of the site. This value may extend over a number of technologies.

    Affects all source data for DKASC, Alice Springs


    Tue, 31 Oct 2017

  4. Site 4: Connection Restored

    After a hiatus owing to external experimentation, array #4 is back online. While power generation is now restored, please note that the hydraulic trackers are still both fixed at a north orientation because the tracking mechanisms are permanently non-operational, as noted previously.

    Affects the following sources:


    Tue, 10 Oct 2017

  5. Site 27: Spotted Module Replacement

    Three of the modules showing signs of sun spot damage on their surfaces have been replaced, as well as one of the adjacent modules which was accidentally affected during the replacement process. These works required system outages at 4-5pm on Monday, 2 October and 10-11am on Tuesday, 3 October.

    Affects the following sources:


    Tue, 3 Oct 2017

  6. Site 13: Output Disturbance

    Disturbances in the power output of this array have been noted since Friday, 22 September. Troubleshooting is currently underway, and the array was disconnected at approximately 11am-noon on Friday, 6 October. Updates will continue to be provided on this webpage as the issue is resolved.

    Affects the following sources:


    Fri, 22 Sep 2017

  7. Solfocus Trackers - Back On line

    Both Solfocus trackers are fully operational again. Replacement motor control board was installed in one unit and the other unit recalibrated and tracking correctly again. 

    Affects the following sources:


    Tue, 19 Sep 2017

  8. Maintenance Downtime

    Array power was disconnected for a few hours in the afternoon of Monday, 11 September due to scheduled system-wide electrical maintenance.

    Affects all source data for DKASC, Alice Springs


    Mon, 11 Sep 2017

  9. Monitoring Interruption for UPS Battery Replacement

    The disconnection and re-connection of the solar arrays and weather station equipment while a new site connection was being established prompted the already flattening UPS batteries which power the site’s energy meters to fail and require immediate replacement. Data recording was affected from approximately 2.30pm ACST, Monday 10 July to 4.00pm, Wednesday 12 July.

    Affects weather data for DKASC, Alice Springs

    Affects all source data for DKASC, Alice Springs


    Wed, 12 Jul 2017

  10. Site 1A: Hot Spots

    A recent annual maintenance inspection observed hot spots on two solar modules: the third module from the top, east end on Tracker #3, and the second module from the bottom, east end on Tracker #4.

    Affects the following sources:


    Mon, 22 May 2017

  11. Site 31: Hot Spots

    A recent annual maintenance inspection observed hot spots on two solar modules: the third module from the east in the bottom row and the second module from the west in the top row.

    Affects the following sources:


    Mon, 22 May 2017

  12. Pyranometer Angle Adjustment

    The mounting angle of the SPN1 pyranometer at the weather station was adjusted slightly to ensure it was horizontal. The spirit level had evidenced a very slight tilt previously owing to a minor skew of the cantilever arm.

    Affects weather data for DKASC, Alice Springs


    Tue, 9 May 2017

  13. Website Server Upgrade

    Over recent months many users have been experiencing problems with data downloads from the historical data download section and other issues with the DKASC website. Over recent weeks we have been migrating the website to a new host server and testing the new site. This has resulted in some delays, outages and issues with data downloads for some users. These changes are nearly finalized though so please be patient and we will confirm when we believe the work complete and the site working at 100% capacity again.

    Affects all source data for DKASC, Alice Springs, Yulara


    Tue, 14 Feb 2017

  14. Partial System Outage

    One of the major switchboards at the DKASC lost power yesterday 01/12/2016 at ~11:00 am. This isolated and shutdown array sites 23 through to 37 inclusive. The switchboard was re-energised at ~16:30 today (02/12/2016) and is again operating normally. Data for this period for these sites is lost.

    Affects the following sources:


    Fri, 2 Dec 2016

  15. Site 36: Intermittent Outages

    The micro inverter settings for the Novopolymer array were incorrectly changed in early November 2016. This has resulted in the intermittent shutdowns of these inverters up o and including 29th November 2016. This has been corrected on the 29th November 2016 and this issue should now resolve itself.

    Affects the following sources:


    Tue, 29 Nov 2016

  16. Sites 24 and 27: Temporary Outage

    Both Site 24 and 27 went offline from the 14th to the 17th November 2016. This outage was caused by a contractor working on another system turning off these two systems for safety reasons and then forgetting to turn them back on after the work was complete. This outage was not a fault of the technology itself but rather simple human error.

    Affects the following sources:


    Fri, 18 Nov 2016

  17. Site 32: PV Module Changeover

    At the request of Canadian Solar the existing PV modules at site 32 were changed out in full, with existing PV modules being removed and a new and more recent array pf Canadian Solar modules installed. Details on the updated technology is available by linking to the “More Info” tab for Site 32

    Data from the original Canadian Solar array will be archived but remain available from the Historical Data Download page.

    Affects the following sources:


    Wed, 9 Nov 2016

  18. Wind Measurements Incorrect

    The DKASC weather station has developed a problem with the wind speed measurements. Since ~21st October the wind speed has been registered an order of magnitude above the actual readings with occasional readings over 1000 ms-1. The cause is under investigation. In the meantime, please do not use these wind speed readings.

    Affects weather data for DKASC, Alice Springs


    Fri, 21 Oct 2016

  19. Sites 24 and 25: Q-Cells PV Module Changeover Complete

    Sites 24 and 25 are operational again from ~10th August 2016. At Q-Cells’ request, the original PV modules were removed and they have now been replaced with a more recent generation of PV product. Please visit the site for details.

    Data from the two original arrays will be archived but remain available from the Historical Data Download page.

    Affects the following sources:


    Wed, 10 Aug 2016

  20. Weather Data Operational Again

    The main weather station at the DKASC is back on line again from the 5th July 2016. The outage was caused by surge damage to the comm’s ports on the main data logger. This data logger was replaced. The damaged data logger will be assessed to determine if the missing weather data for the outage period can be retrieved.

    Affects weather data for DKASC, Alice Springs


    Tue, 5 Jul 2016

  21. Weather Data Outage

    The DKASC (along with most of Alice Springs) was hit by a strong storm on the 18th June 2016. Due to this storm, communications to weather station have been temporarily lost. Weather data is still been collected and once communications are re-established the missing data will be repopulated. Note also that POA pyranometer data is still available via the historical download page.

    Affects weather data for DKASC, Alice Springs


    Fri, 24 Jun 2016

  22. Site 7: Operational Again

    The failed inverter at Site 7 was replaced today. Normal operation of the system should commence again from 9th June 2016.

    Affects the following sources:


    Wed, 8 Jun 2016

  23. Site 22: Tracker Operational

    One of the two Solfocus trackers went offline ~21st April 2016. The cause was traced to a faulty motor drive board. This was replaced today and the CPV system is now once again in full operation.

    Affects the following sources:


    Tue, 17 May 2016

  24. Site 34: Temporary Shutdown

    Site 34 was temporarily shutdown on the 11th May 2016 from ~ 10:00 am to 6:00 pm. This was to de-energize the underground cable feeding the site to allow for safe trenching and augering work on neighbouring sites.

    Affects the following sources:


    Wed, 11 May 2016

  25. Site 35: Temporary Shutdown

    Site 35 was temporarily shutdown on the 11th May 2016 from ~ 10:00 am to 6:00 pm. This was to de-energize the underground cable feeding the site to allow for safe trenching and augering work on neighbouring sites.

    Affects the following sources:


    Wed, 11 May 2016

  26. Sites 5 and 6: Faulty Tracking Units

    At both sites 5 and 6 the single and dual axis tracking units have for several years been experiencing intermittent outages and component failures. These tracking units are no longer directly supported by any suppliers in Australia and replacement parts (control boards, actuator arms, etc.) have become difficult to source and thus several of the trackers at both sites are have failed or only operate intermittently. Continuing efforts are being made to repair these units but please note that the PV output of these two sites is negatively impacted by these technical issues.

    Affects the following sources:


    Wed, 20 Apr 2016

  27. Site 4: System Offline

    This array was taken offline in May 2013 and utilized for a separate research project for several years. The site shall be shortly re-established as a  fixed north facing array, 

    Affects the following sources:


    Wed, 20 Apr 2016

  28. Server Outage

    On the 18th February at ~ 12:00 hours power was lost to the DKASC server. The server remained off line until 19th February ~09:30.

    Affects weather data for DKASC, Alice Springs

    Affects all source data for DKASC, Alice Springs


    Thu, 18 Feb 2016

  29. Site 7: Fault

    This PV system shutdown on the 13/11/2015. Early investigations indicate that the system inverter has failed. Further investigations are underway and the inverter shall be replaced if this is determined to be final cause.

    Affects the following sources:


    Wed, 18 Nov 2015

  30. Site 22: Inverter Fault

    One of the two inverters on these arrays has developed an intermittent fault and shutdowns for several hours most days at around midday. This issue is being investigated and when a solution is found a notification shall be made.

    Affects all source data for DKASC, Alice Springs


    Mon, 26 Oct 2015

  31. Sites 24 & 25: Q-Cells Module Changeout

    Both the Mono Si and Poly Si Q-Cells Arrays in Sites 24 and 25 were damaged in 2014 by mini tornado that hit the DKASC. These PV modules have been removed and it is expected that these two sites will have new Hanwha Q-Cells arrays installed in the coming months.


    Mon, 7 Sep 2015

  32. System Outage - Sites 4, 5, 17, 20, 22, 34 and 35

    On the 5th June 2015, A Friday before a long weekend, seven individual PV systems at the DKASC were switched off by unknown persons and for unknown reasons. The outage was not noted until the following Tuesday when O&M staff returned to work and found the main circuit breakers for sites 4, 5, 17, 20, 22, 34 & 35. turned off. These systems were all turned back on again on the 9th March when the problem was detected.

    Affects all source data for DKASC, Alice Springs


    Wed, 10 Jun 2015

  33. Site 22: Inverter Failure

    An inverter failure occurred resulting in the loss of all output from one of the two Solfocus trackers. On investigation the inverter was found to have had a loose phase connection which resulted in arcing and eventually burnt out the input terminals to the inverter. The loose phase connection would have been due to a poor installation technique. The inverter was returned to SMA and replacement provided and installed. The replacement was installed in earlky May 2015.

    Affects all source data for DKASC, Alice Springs


    Mon, 13 Apr 2015

  34. Site 2: Damaged PV Module

    One PV module on this PV array was damaged in a wind storm. This glass front surface has been shattered by what appears to be an impact on the back of module from the frame/structure of the tracker itself. In recent months it has been noted that the performance of this array has fallen and the cause is identified as the partial failure of one array string on which this damaged module is connected. The PV module supplier Eco-Kinetics is no longer in operation and sourcing of a replacement PV module has not been possible to date.

    Affects the following sources:


    Sun, 1 Mar 2015

  35. PV Array Annual Clean - 2014

    Every year the front surface of all PV arrays are given a full and thorough clean using demineralized water. This annual clean provides the opportunity for interested parties to assess the impact of cleaning on PV module performance, particularly after extended dry periods. To this end we have provided a summary of the start and finish time for PV array cleaning for each array at the DKASC.

    DKASC-Array-Cleaning-Times-2014

    Affects all source data for DKASC, Alice Springs


    Mon, 13 Oct 2014

  36. Site 26: Temporary Outage

    At Site 26 the Polycrystalline Silicon QCells QProG3 was temporarily disconnected for maintenance and testing purposes. This system was off line for the majority of 2nd April and restored to full operation on the 3rd April.

    Affects the following sources:


    Thu, 3 Apr 2014

  37. Site 14: Extended Disconnection - Cleaning

    The array was cleaned along with all other arrays around the 4th to 6th December 2013. Each array was isolated during cleaning and turned back on afterwards. Unfortunately, the Site 14 (Polycrystalline Silicon, Kyocera) array was left off by the cleaning contractor and has been offline since 17:10 04/12/2013 until 16:40 13/12/2013.

    Affects the following sources:


    Fri, 13 Dec 2013

  38. PV Array Annual Clean - 2013

    Every year the front surface of all PV arrays are given a full and thorough clean using demineralized water. This annual clean provides the opportunity for interested parties to assess the impact of cleaning on PV module performance, particularly after extended dry periods. To this end we have provided a summary of the start and finish time for PV array cleaning for each array at the DKASC.

    DKASC-Array-Cleaning-Times-2013

    Affects all source data for DKASC, Alice Springs


    Sat, 7 Dec 2013

  39. All Systems Data Outage

    On the Tuesday the 26th November 2013 at approximately 4pm the local Alice Springs grid went down. This is a reasonably regular occurrence and generally just results in the shutdown of all inverters (grid connected) at the DKASC until the power is restored. The data network at the DKASC is supported by an Uninterruptible Power Supply (UPS) but this unit failed during the Tuesday outage and for a period of approximately 1 hour the data network also shut down and no system data was recorded during this time. A bypass of the UPS was implemented as a temporary measure while the UPS was repaired. Today, Thursday the 28th November 2013 the UPS repairs were completed and at approximately 1pm, the UPS and the data network was again shutdown for approximately 10 minutes so that the UPS could be fully reinstated. It is now fully operational again.

    Affects all source data for DKASC, Alice Springs


    Sat, 28 Sep 2013

  40. Site 1A and 1B: Configuration Changes

    SITE 1: Large Scale Tracke: Degerenergie has been modifed. Originally 6 trackesr each with 30 x 175W Trina PV modules, this has now been split into two systems - SITE 1A. Two Degerenergie trackers each with 30 x 175 W Trina Modules - SITE 1B. Four Degerenergie trackers each with 30 x 195 W Trina Modules. These are new PV modules This change was at the request of TRINA who had identified a discolouration issue with some of the 175W PV modules. This discolouration was not affecting performance at this stage and was deemed to be caused by a faulty batch of back sheeting. Two of the six trackers have retained the original PV modules to allow assessment of their long term performance.. The two new sites will be fully integrated into the website, whilst the original data stream is still available for download but will no longer be available on the automated graphing. The following list provides a summary - Original SITE1 : Large Scale Trackers, DEGERenergie - New SITE 1A : DEGERenergie Trackers & TRINA 175W - New SITE1B : DEGERenergie Trackers & TRINA 195W

    Affects the following sources:


    Fri, 20 Sep 2013

  41. Site 34: System Fault

    In late June 2013 an issue was detected with Site 34 the Winaico system. For much of the month of June the Winaico system inverter was shutting itself on and off intermittently. After much investigation the problem was sourced to a loose neutral wire in one the DKASC switchboards which was causing an intermittent floating neutral and a subsequent voltage rise on the phase that the Winaico system is connected to. Other systems at the DKASC were also effected by this probelm but to a much lesser extent. These included all sites 23-39. The problem is now resolved and all data from 3rd July 2013 can be considered accurate. The system data for the Winaico system for June 2013 is not representative of the true performance of the Winaico system.

    Affects the following sources:


    Wed, 3 Jul 2013

  42. Site 1A and 13: PV Module Discolouration

    An orange discolouration of the majority of the PV modules on these arrays was noted in 2013. Investigation by the module manufacturer identified that the cause was the use of a particular back sheet material that on thermal and UV exposure has begun to breakdown and released the discolouring agent into the EVA. On these same arrays a several PV modules that utilized a different back sheet material have not been effected by this at all. Despite this discolouration no significant impact on the arrays performance has been noted to date. The module manufacturer did request to change out the effected PV modules, but for the benefit of the industry and to allow the progress of this issue to be observed over many years they kindly agreed to leave the majority of these PV Modules in place. The only PV modules that were changed out was the PV system now nominated as Site 1B, which was subsequently separated off as its own distinct array. Sites 1A and Site 13 retain the original PV modules.

    Affects the following sources:


    Sat, 1 Jun 2013

  43. Pyranometer Calibration

    At approximately 11:55 (CST) on the 14th December 2012, the existing SPN1 pyranometer was changed out with an identical SPN1 unit. The original unit shall be sent for calibration after 3 years of service and reutilized in another capacity. This change out resulted in a10 minute downtime on irradiance data.

    Affects weather data for DKASC, Alice Springs


    Fri, 14 Dec 2012

  44. Site 7: Disclaimer

    These CdTe Thin Film modules were a non-approved production prototype and are not commercially available. The data is not representative of current CdTe Thin Film technology and data from this site should not be used in any comparative capacity or in any marketing materials.

    Affects the following sources:


    Wed, 12 Dec 2012

  45. Site 2: ADES Tracker Fault

    September 2012: The large scale ADES is not able to effective track the sun and was often found out of alignment. This issue could not be rectified due to the lack of technical support from the suppliers (ADES and Eco Kinetics). The decision was made to disable the tracker and leave the array in a fixed position at Tilt = 20 degrees and Azimuth = 0 degrees, solar north.

    Affects the following sources:


    Sat, 1 Dec 2012

  46. PV Array Annual Clean - 2012

    Every year the front surface of all PV arrays are given a full and thorough clean using demineralized water. This annual clean provides the opportunity for interested parties to assess the impact of cleaning on PV module performance, particularly after extended dry periods. To this end we have provided a summary of the start and finish time for PV array cleaning for each array at the DKASC.

    DKASC-Array-Cleaning-Times-2012

    Affects all source data for DKASC, Alice Springs


    Thu, 20 Sep 2012

  47. Site 1A: DEGERenergie Tracker Issue

    One of the two DEGERenergie trackers shifted into horizontal position and is no longer tracking on the tilt axis but only rotates on the azimuth axis. Despite the installation of a replacement tilt drive motor this issue has not been resolved. No local support has been available from tracker manufacturer and no further attempts will be made to resolve this issue.

    Affects the following sources:


    Sat, 1 Sep 2012

  48. Site 2: ADES Tracker Fault

    On 22nd March 2012 in was noted that the large scale ADES tracker was not not tracking on the east west axis but was fixed in north north east direction. The tracking motor was removed and sent away for repair/replacement. The cause of failure was determined to be a pourous clamp housing in the east west tracking motor assembly. This pourous housing was due to manufacturing defect and a new housing was machined and replaced under warranty by original system installers. The system was operating again on 30th May 2012.

    Affects the following sources:


    Wed, 30 May 2012

  49. Wind Sensor Failure & Repair

    Due to hardware failure the Wind Sensor at the DKASC was inoperable from 01/03/2012 (inclusive) to the 01/05/2013 (inclusive). This missing data has been backfilled with wind data from the local Australian Bureau of Meteorology (BOM) station which is located approximately 4km to the SSE of the DKASC. The BOM data that was provided is one minute average values for wind speed and direction. It is has been converted to the 5 minute average data to match the original data set.

    Affects weather data for DKASC, Alice Springs


    Tue, 1 May 2012

  50. Site 5: Tracker Fault

    It was identified on 17/02/2012 that two of the Kyocera Solar Solar Forest 1-axis trackers were not tracking/moving. One tracker required replacement of main actuator arm the other tracker required new battery for controller. Both systems operational again by 30/04/2012

    Affects the following sources:


    Mon, 30 Apr 2012

  51. All Systems Data Outage

    An issue with time synchronisation of the meters was fixed during this period and resulted in the loss of data for this period. Outage period approximately 7:18pm on 05/07/2011 to 10:36am on 06/07/2011

    Affects all source data for DKASC, Alice Springs


    Wed, 6 Jul 2011

  52. Site 22: Solfocus Issue

    The Solfocus Concentrated Photovoltaics system data was taken offline for 1 week for rectification work due to it’s lower than expected output. The technology supplier identified that this issue is not due to the failure of the tracking system, but rather the dynamics of the interface between the grid and inverters. The supplier carried out rectification work.

    Affects the following sources:


    Sat, 19 Mar 2011

  53. Site 4: Tracker Fault

    The experimental trcaker technology has not functioned as expected since installation. The array typically faced away from the sun resulting in lower than expected outputs. The hydraulic trackers were also moving erratically and due to occupational health and safety reasons have now been fixed in place, i.e. they are not tracking

    Affects the following sources:


    Tue, 1 Jun 2010

  54. Site 9: System Output and Configuration

    The Solco Choice Electric CIGS thin film system has been exporting less than its full DC output as AC power since installation. Technology suppliers are working to resolve this system configuration issue.

    Affects the following sources:


    Thu, 1 Jan 2009