Geelong's solar power & energy efficiency specialists 1300 348 847

Grid Back Up/Stand Alone

Grid Backup

PowerwallA grid backup system uses batteries to store energy that can be utilised when mains power is not available or even when it is available but you choose to use your own stored power rather than paying for grid power at peak rates. Grid backup is the next best solution to feed-in tariffs.

Power outages

During a power outage, backup power can be sourced from a pre-charged battery, offering the user mains quality power and peace of mind. Once the grid electricity is restored, the system automatically reverts to providing electricity from the grid, simultaneously recharging the battery and maintaining them in optimum condition.

Offsetting grid power

When feed-in tariffs on residential solar systems are low, the maximum benefit for solar system owners will be in offsetting mains electricity at peak power rates i.e. using your own solar generated power during the day rather than grid power. This can be extended into the evening by using a battery bank.


Stand Alone (Off-grid)

Where grid connection is expensive, impractical or just not wanted, an independent off-grid system can be installed. These are commonly known as SAPS (stand-alone power systems).

City to Surf Solar+ offers maintenance check-ups and expansion options for existing SAPS as well as the design and installation of new stand-alone power systems.

New SAPS design starts with an energy audit or load profile to determine the amount of power and energy required to run your appliances. Any savings that can be made at this stage by using energy-efficient appliances will be reflected in lower overall system costs.

Power is supplied from various sources (usually solar) and stored in a battery bank ready to be used as direct current (DC) or as grid-equivalent AC power provided through an inverter.

Talk to us about your requirements and we can help you complete an energy audit to determine the best solution for your needs.

City to Surf Solar+ uses the Australian-made Selectronic SP PRO inverter together with Selectronic-accredited ABB or Fronius grid-tie inverters. We normally use BAE deep-cycle valve regulated lead-acid batteries (tubular plate) but depending on the design and power requirements some of the newer lithium-ion batteries can also be used for storage.

Our designers and installers are accredited for both grid-connect and off-grid systems.

Sizing & Pricing Guide for Stand Alone

Cabin/weekender

1500Watts/24Volts

Provides energy   for Includes Price Guide*
Small Cabin/Weekender
AC power for infrequently used domestic appliances
6 x 250W solar   panels
Panel mounting frames
600AH 24V battery bank
1.5kW MPPT AC coupled solar inverter
3kW Interactive  inverter/charger
DC control and AC switchboard
Installation on solar ready house
$16,500

Energy efficient house

2500Watts/24Volts

Provides energy   for Includes Price Guide*
Modern conveniences   for an energy efficient home 10 x 250W solar   panels
Panel mounting frames
1380AH 24V battery bank
2.5kW MPPT AC coupled solar inverter
4.5kW Interactive inverter/charger
DC control and AC switchboard
Installation on solar ready house
$23,500

Family house

5000Watts/48Volts

Provides energy   for Includes Price Guide*
Modern conveniences   for an energy efficient family home 20 x 250W Solar panels
Panel mounting frames
1380AH 48V battery bank
5kW AC Coupled solar inverter
7kW Interactive Inverter/charger DC control and AC switchboard
Installation on solar ready house
$39,250

Business/farm

10000Watts/120Volts

Provides energy   for Includes Price Guide*
Farm, multi   residence, large residence, small business 40 x 250W solar   panels
Panel mounting frames
1380AH 120V battery bank
10kW AC coupled solar inverter
15kW Interactive Inverter/charger
DC control and AC switchboard
Installation on solar ready business
$84,500

*Estimated price after rebates applied. Assuming property is suitable for off-grid solar power.

City to Surf Solar+ also provide LED lighting and commercial solar power in Geelong.

Calculate your system needs

  • Supporters of:Give Where You Live
  • Accreditation:Clean Energy Council
  • Members of:Geelong Sustainability GroupATA
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