Braybrook Community Centre

Braybrook, Victoria

  • Design Phase Commencement: October 2015
  • Installation: December 2015
  • Final Commissioning: January 2016

Client: Maribyrnong City Council

Project Goals

Design, supply, install and commission a 29.9 kWp grid-connected solar system on a community building in Braybrook, Melbourne.

Design the system so that battery storage can be added at a later date.

Details

System size: 29,900W or 29.9kWp
Approx Average Daily Yield: 110 kWh/day
Approx Annual Generation: 40,160 kWh/yr
Annual Greenhouse Gas Offset: 48,594 kg CO2/yr

Some independent testing of the WINAICO Polycrystalline modules in Australia have been conducted and published in Renew Magazine. These test results found that WINAICO Polycrystalline modules had the best Winter Energy Yield results out of all modules (including the highly touted Sanyo/Panasonic HIT hybrid module.) These results also showed the Winaico Poly had the highest energy density of any Polycrystalline module tested. This along with top ranking scores for warranty support the top quality nature of this product.

Further to this, the Desert Knowledge Centre located in Alice Springs, an independent test facility which tests panels under Australian conditions (http://www.dkasolarcentre.com.au/) has released some data which supports the performance results. The results prove superior average yield data compared to all Polycrystalline and Monocrystalline modules on the market. Also, WINAICO is a confirmed Tier 1 manufacturer as per the Bloomberg New Energy Finance classification.

Enphase Energy micro-inverters have numerous advantages over DC based string inverters but this comes at a higher cost premium. The main advantages include increased hours of operation for extra generation potential, an ability to deal with long term module soiling, shading, cloud cover, and panel mismatch due to degradation over time. As micro-inverter systems are effectively AC (convert DC to AC at the panel level) these systems are also much safer which can be a superior choice on sites open to the general public.

All micro-inverter systems allow remote panel level system monitoring to ensure solar production is in line with expectations. The Enphase MyEnlighten portal is hosted free for the life of the system and can be accessed via any web browser with system information also used for public display purposes. All Enphase systems are also hybrid-ready with the addition of the new AC battery product from mid 2016 making this an easily expandable and upgradable long-term choice. All Enphase micro inverters come with a 10 year warranty as standard.

A 10 year installation warranty has been provided by Going Solar. This is in line with the longest offered in the industry. The photovoltaic panels include a 10 year manufacturer and further 25 year linear performance warranty. The Enphase inverters carry a 10 year warranty in Australia. The Radiant framing solution carries a 15 year finish warranty.

Results

Going Solar provided a performance guarantee for the inverter system presented. By utilising the professional photovoltaic design software PVSyst we were able to simulate expected annual system output by inputting the inverter and panel performance characteristics as well as panel angle and orientations on site. The software calculated the expected output before and after system losses. Typical system losses include changes in irradiance levels, loss in output due to panel temperature, module quality and array mismatch losses, inverter efficiency loss and wiring losses. This is the most accurate tool available in the photovoltaics industry to date and is classified as the industry standard.

The Enphase micro-inverter solution has the potential to generate 45.57MWh of energy per year (as the modules and system size do not change) with 40.16MWh available for use after losses and conversion. Real world production reports for the WINAICO modules supplied indicate outputs in-line with the simulations provided with the production guarantee.