From Customer to Energy Champion: How Wadalba house hold Slashed there Bills by 89%
Sigenergy battery system with full home backup
When you're already part of the Coast Wide Energy family, you know we deliver results. But what happens when an existing customer wants to push their energy independence even further?
Central coast property in Wadalba has turned into a renewable energy showcase, and now he's inspiring fellow customers to upgrade their own systems.
The Project: house hold, Wadalba NSW 2259
System installation: 11.28kW solar + 32.24kWh Sigenergy battery storage
Results: 89% electricity bill reduction.
Real Results from a Real Customers
This family upgraded system now generates 13,954kWh annually, with daily summer production hitting 52kWh. The numbers tell the story:
$3,700+ saved in yearly savings
5-6 year payback period even after STC incentives
457% ROI over 25 years
$92,316 net present value from his investment
But here's what matters most: 64% self-consumption through intelligent battery storage, meaning this house hold barely touches the grid during peak pricing periods.
Our apprentices Gianluca, and Nick worked alongside tradesman Dave to maximize every panel location.
Why Existing Customers Are Upgrading Now
Success isn't an outlier—it's a blueprint. Many of our customers installed solar years ago when battery technology was expensive and export tariffs were high. Today, the math has changed:
Old System Reality:
Exporting solar at 5-7c/kWh → Buying it back at 37c+/kWh during peak hours
Upgrade Advantage:
Store excess solar → Use it during expensive peak periods → Cut grid dependence by 80%+
This features premium tier-1 components our team trusts: Jinko Solar Tiger Neo panels (25-year warranty) and Sigenergy's market-leading LiFePO4 batteries (10-year warranty). Every connection was verified by our expanding team—Anthony supervised while apprentices Gianluca, and Nick gained hands-on experience with next-gen battery tech. Tradesman Dave ensured every cable met our rigorous quality standards.
What’s Upgrade Means for repented customers
If you're already a Coast Wide Energy customer, you're already ahead of the curve. You've seen our workmanship, you know our standards, and you understand the value of a properly installed system.
Here's why you should call us today:
System Optimization Audit – We'll analyze your current performance at no charge
Battery Integration – Add storage to existing solar (STC incentives still apply)
Smart Load Management – Program hot water, pool pumps, and EV charging for maximum solar use
Inverter Upgrades – If you're capped at 6kW like many older systems, a larger hybrid inverter unlocks your panels' full potential
Paul's installation proves that upgrading delivers immediate, measurable results. His 89% bill reduction came from strategic battery sizing and intelligent energy management—not just adding more panels.
Environmental Impact That Matters
Beyond the financials, upgrade eliminates on this home in Wadalba NSW 2259:
252 trees worth of CO₂ annually
4,190 litres of petrol equivalents in emissions
4,762kg of coal consumption per year
Over 25 years, that's a small forest's worth of carbon offset from one customer's decision to upgrade.
Your Turn: The Coast Wide Energy Upgrade Program
We're offering existing customers exclusive upgrade benefits:
Priority scheduling – Jump the queue for installation
STC incentive handling – We manage the paperwork, you get the savings
Performance guarantee – We promise your upgraded system hits targets or we optimize it free
Trade-in value – Credit for existing equipment when applicable
Ready to replicate results?
click the contact us link below
Already trusted by hundreds of Central Coast homeowners, our licensed team (NSW 215869C) delivers upgrades that perform. If this house hold can cut his bills by 89%, imagine what we can do for your system.
Coast Wide Energy: Building on Our Relationships, One Upgrade at a Time.
