Energy Independence On The Grid

Objective:

The customer wanted to maximise all available roof spaces on the property to harness as much solar production as possible. This would provide both increased energy savings, and improved blackout proofing by maintaining solar generation if a blackout occurred during the day.

Energy security with no compromise on lifestyle

Blackout protection was needed across all 3 phases, with a system output capacity that would mean no compromise to the customer’s lifestyle. Along with the flexibility to expand the system in future if needed.

The customer was dissatisfied that other companies could only meet his goals partially, or advised that what they wanted couldn’t be done. The customer wanted a tailored solution that met all his objectives.

Site Considerations:

Roof space available for solar installation included both the house, and two sheds. Additional catenary wiring was required to facilitate this. The steep driveway and complex nature of the installation meant that an on-site custom fabrication was required.

System Design:

  • 3 x Selectronic SP PRO SPMC482 Inverter Charger
  • 4 x BYD B-Box 13.8 LV PRO (55kWh)
  • 126 x Trina Solar 310W solar modules (39kW)
  • 3 x Fronius Primo 8.2-1 solar inverter
  • 1 x Fronius Primo 5.0 solar inverter

Manufacturer Reduces Energy Costs

Solar for manufacturing business

 

A well established manufacturing facility with high power usage was seeking to reduce their ongoing power costs. An independent financial assessment was completed to confirm a solar installation would be the most viable investment.

The installation needed to be completed at a time when production lines would not to be effected, and equipment location was of importance to maintain the existing work areas. Plant operators required instantaneous visuals for generation, consumption, and logging historical data for reviews.

System Design

The system was tailored to maximise self consumption from the highest yielding roof areas, with a degree of insulation benefits throughout summer further adding to property efficiencies.

A different electricity retailer was selected to offer surplus solar feed in credits for non-operational periods.

  • 560 x Trina 270W Modules (151.2kW)
  • 4 x Fronius ECO 25.0-3 Solar Inverters
  • 1 x Fronius Symo 20.0-3 Solar Inverters
  • IntelliPro Grid Protection Unit
  • Fronius LGC Compliant Monitoring
  • Combiner Box and BOS
  • Custom Inverter Wall Fitout

Project Outcome

The system is predicted to save almost $370,000 in ten years – and pay for itself in under 5yrs. The installation was thoughtfully planned so production and operation were unaffected.

A detailed monitoring platform was included so the plant operators have an instantaneous visual on generation and consumption, and saved historical data for ongoing reviews.

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Tesla Powerwall with Existing Solar

tesla powerwall

Objective:

The customer wanted a battery storage system to use more of his solar, and buy less power from the grid. He liked the idea of having some backup ability as well, but this wasn’t a necessity.

Site Considerations:

System needed to retrofit to his existing SMA solar array, and be installed outside along a protected service wall.

System Design: 

  • SMA Sunny Boy Storage 2.5
  • 7kWh Tesla Powerwall
  • SMA Sunny Portal monitoring
  • Existing 7kW solar array

Smart Battery with Tesla Model-S Charging

advertiser battery storage article

Objective:

The client wanted to achieve a high level of solar self consumption and grid independence over the entire year. There was a requirement for intelligent control of specified loads in relation to weather forecasts, solar production, and battery storage levels.

Blackout protection in the event of grid failure, along with remote system access, monitoring, and control of system was also required.

Site Considerations:

It was important to produce a clean aesthetic because of the system’s high visibility. Space efficiency measures were needed to allow system installation next to the electric vehicle (EV) charger.

System Design: 

Intelligent load management allows large appliances to be automatically switched on when batteries are full during high solar generation. This ensures the clients Tesla EV charging is only activated when it will not draw from the batteries or the grid. This function can also be activated manually via smart phone or online.

  • 10kW ground mounted solar array
  • SMA Sunny Tripower 10000TL
  • 3-Phase SMA Sunny Island 8.0’s
  • 26kWh BMZ Li-ion battery storage
  • SMA Home Manager monitoring
  • Existing 15kW solar array

Project Outcome:

The client was extremely happy with the intelligent load management, blackout protection for energy security, and the system design optimising solar production for his house loads and Tesla Model-S EV charging.

The system was neatly installed in the preferred location, and the generation from the new solar array is exceeding that of the larger existing array.

“I am impressed with the symmetry and seamless control of loads not directly connected to the inverter/charger units [EV charging & hot water], and the way the battery capacity augments between all loads and 3 phases.” – Keith, Adelaide Hills SA

PDF Case Study

Grid Home With Energy Independence

Energy Independence

Objective:

Customer has a large house with large loads and wanted their property to have the latest technology, a level of energy backup and reduced energy costs.

Load Analysis:

20-24kWh average daily winter/summer demand; large potential peak loads

Site Considerations:

3-phase grid power; ground mount solar array frames required

System Design:

  • OEA Grid Autonomy 180-48 (Smart Home) System – 18kW 3-phase output
  • OEA Adapt mount – installs in customers shed
  • 32kWh sealed gel battery storage
  • 9.2kW Polycrystalline solar array on ground mounts
  • SMA Home Manager energy management system and monitoring

 

Suburban Blackout Proofing and Energy Security

Solar panels

Objective:

Needed partial backup power for the home for specialist medical equipment, as well as the added benefit of reducing energy costs

Load Analysis:

14.6-14.8kWh average daily winter/summer demand; small 3.4kW design surge

Site Considerations:

Limited northern and eastern roof areas available for PV; Backup system in garage

System Design:

  • OEA Grid Autonomy 60-48 (Import Only) System – 6kW 1-phase output
  • OEA Adapt mount + storage cabinet – installs in customers garage
  • 15kWh backup battery storage
  • 5kW Polycrystalline solar array split between north & east roof

Solar PV Cell Expert Invests in Energy Storage Independence

LG Solar Panels

Objective:

Customer was seeking a level of energy independence for their home, while freeing up an existing solar system to export more back to the grid

Load Analysis:

11.7-14.1kWh average daily winter/summer demand; 7.7kW design surge

Site Considerations:

Storage system to be installed under staircase inside home

System Design:

  • OEA Grid Autonomy 80-48 (Import Only) System – 8kW 1-phase output
  • OEA Adapt mount + storage cabinet
  • 15kWh sealed gel battery storage
  • 4kW Monocrystalline solar array on optimised north roof

No Electricity Bills

Solar panel installation

Objective:

Strong green motivations and also to negate electricity bills.

Was very keen to incorporate the system design into the home. Actively involved throughout planning, and this provided an excellent integrated result.

Load Analysis:

14.2-17.5kWh average daily winter/summer demand; 5,2kW design surge

Site Considerations:

Custom built equipment room, and large optimised solar roof area

System Design:

  • OEA Grid Autonomy 60-48 (Import Only) System – 6kW 1-phase output
  • OEA Adapt mount – install in plant room
  • 31kWh sealed gel battery storage
  • 5kW Polycrystalline solar array on north roof surface – yielding an estimated 120% of average demand, and 73% in winter

Solar for Business

30kW grid connected solar system

Objective:

Mel Schmidt Panel Works is a panel beating business in Mildura, VIC. With almost all of their energy being used during the day, Loris & Craig from Mel Schmidt wanted to install solar to get rid of their power bills entirely.

Site Considerations:

Solar placement was easy with such a large workshop roof area to work with. The low roof pitch meant installing additional solar to make up for the shortfall. The workshop roof was 4m in height so adequate safety equipment was required, and grid restrictions limited the array size to 30kW.

System Design: 

  • 28kW Trina Solar roof mounted solar array
  • 2 x SMA Sunny Tripower 15000TL
  • 3-phase output