From 100 kWh a Day to 1.5: A Torquay Solar and Battery Install

This Torquay home was drawing 100 kWh a day from the grid and paying around $600 a month for it. See how Winki Energy designed a solar and battery system around how the household actually lives.
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This Torquay household was running a swimming pool, a spa and a heat pump, and the power bills showed it. Daily grid usage sat near 100 kWh, costing around $600 a month. The family knew something had to change, they just hadn’t found a company willing to design around how they actually live.

Winki Energy scoped and installed a 23.27 kW solar system sized to the household’s real load rather than a standard package off a price list. The setup: Trina panels paired with a Sigenergy SigenStor, which handles both the 20 kW inverter and the battery storage in one stacked unit, all installed in-house by our own electricians.

Two days after switchover, the monitoring told the story. Grid draw of 4 kWh on day one. 1.5 kWh on day two. The pool pump runs when it needs to, the spa heats without anyone doing the maths, and the hallway lights at night are just lights again.

What the Homeowner Needed

The homeowner came to us already knowing the problem. What he wanted was a straight answer, not a sales pitch dressed up as engineering.

He’d spoken to several other companies first. Each one came back with different numbers, different designs and different promises. Some quoted figures he couldn’t verify. Others proposed systems that looked fine on paper but had nothing to do with how his home runs: the pool, the spa heat pump, and the evening load that comes with a full house.

He needed an honest assessment from someone willing to size a system for a genuinely high-consumption household, then stand behind the install.

Our Objectives

Once we understood how the household runs, the brief was clear:

  • Design for a genuine 100 kWh daily load, not an average home
  • Account for the pool, the spa heat pump and the evening peak when everyone’s home
  • Take the worry out of running high-use appliances
  • Deliver a measurable drop in grid draw from day one
  • Install cleanly, communicate throughout, and leave the property exactly as we found it

The Outcome

Against a starting point of 100 kWh a day, grid draw of 1.5 to 4 kWh is the kind of shift that changes how a family lives in their home. High-use appliances now run on the home’s own power instead of racking up a bill.

The homeowner works in the trades himself, so he knows what a tidy job looks like. He was away during part of the install, came back, opened the gates, and found the place exactly as the crew had left it. No mess, no loose ends, no follow-up calls needed. That mattered to him as much as the numbers.

Within weeks he’d recommended Winki to his business partner, whose system went in the following week, and to his neighbour as well.

In the Homeowner’s Words

“Winki’s was the most honest and was the only one that designed the system for our house and furthermore designed it for our family and how we use. That was where Winki came on top.”

I opened the gates and drove down the driveway and everything was done and it was like they’d never been there. As a businessman myself, in the trade sector, if you can have a client come back and something’s done and it’s like some trade’s never been there, they’ve done an amazing job.

I can’t fault it. They communicated with me while I was away. They asked questions, they did call, there were some text messages. So they did care.

Electricity bills are only going to get higher and higher. So the worth in the system, the financial purchase of the system is only paying off itself quicker. I’ve recommended Winki to my business partner. He’s actually had his system installed last week. I’ve recommended it to our neighbour as well. If anyone did come to me, hence why I’m sitting here, I would 100% recommend them.”

System Snapshot

LocationTorquay, VIC
System typeResidential solar and battery
Solar array23.27 kW Trina panels
Inverter20 kW Sigenergy
BatterySigenergy SigenStor
Daily grid draw before~100 kWh
Daily grid draw after1.5 to 4 kWh
Monthly bill before~$600

If your power bill looks anything like this one did, it’s worth a chat.

We design systems around how your household actually runs. No generic quotes, no overselling. Just an honest look at what your home needs and what you can realistically save.
Book a free consultation and one of our team will walk through your usage, your setup and what a system could do for you.

Get a Quote | Call 1300 494 654

Key metrics
23.27 kW Trina panels and 20 kW Sigenergy

Products used

Get in touch, we’ll do all the heavy lifting

We use best-in-class products, back our work with a 10-year workmanship warranty, and guarantee our team is accredited.

Our guarantee

We use best-in-class products, back our work with a 10-year workmanship warranty, and guarantee our team is accredited.

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Designed by experts

All solar panel & battery systems are designed by SAA-accredited designers.We only employ the best solar installers

Straight-up quotes

All performance estimates are completed using accurate data and conservative when it comes to cost.

Installed by experts

Installed by experts All systems are installed by licensed electricians and SAA accredited solar installers.

Backed by warranties

10 year workmanship warranty. 10 year inverter warranty and 25 year product & performance warranties on solar panels.

Locations we service

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Mount Duneed Solar Installers

Providing Mount Duneed with scalable solar systems and future-ready battery installations to match growing energy demands in new estates.
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Geelong Solar Installers

Supporting Geelong homes with expert solar installations, energy-efficient upgrades and advanced battery storage systems for year-round energy control.
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Melbourne Solar Installers

From residential rooftops to urban businesses, we bring full-service solar, battery and EV charging solutions across metropolitan Melbourne.
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Fitzroy Solar Installers

Helping Fitzroy residents embrace clean energy with compact solar systems, hybrid inverters and battery backups designed for inner-city living.
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Torquay Solar Installers

Powering homes and businesses in Torquay with premium solar panel installations, energy storage systems and EV charger setups.

RESIDENTIAL SOLAR FREQUENTLY ASKED QUESTIONS

Answers To The Most Common Residential Solar Questions

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How do I know if my home is suitable for solar?

If you have a roof with good sun exposure (ideally north-facing), minimal shading, and use a fair amount of electricity during the day, solar is likely a great fit. We’ll assess your property to confirm suitability.

A solar battery stores the excess energy your panels generate during the day so you can use it at night or during power outages. It’s ideal if you want energy independence, more savings, or backup power.

 

Prices vary based on system size and brands chosen. As a guide, a 6.6kW system without battery starts around $4,000–$6,000 (after rebates), while adding a battery like Tesla Powerwall may bring the total to $12,000–$15,000. We’ll tailor a quote to your needs.

Yes! Most systems are battery-ready, and we can retrofit a compatible battery to your current setup after assessing your inverter and panel configuration.

Most batteries have a warranty of 10 years and a lifespan of 10–15 years. Brands like Tesla and Sonnen offer high-quality, long-lasting solutions with strong performance guarantees.

Partners & Accreditation

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