Grid-tied solar system in NZ
RELIABLE, EFFICIENT GRID-TIED SOLAR ENERGY
Energy Monitoring
Real-Time Energy Insights
Monitor your grid-tied power system in NZ with real-time data on energy production and usage. Advanced analytics help you optimise consumption, reduce grid reliance, and maximise savings, ensuring your solar system delivers long-term value.
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The Grid
Smart Grid Integration
A grid-tied solar system powers your home while staying connected to the grid. Excess energy can be exported, earning credits on your bill. This seamless integration provides flexibility, reliable power when solar output is low, and financial benefits over time.
How grid-tied solar systems work
How Panel-Only Solar Powers Your Home
A panel-only solar system in NZ efficiently converts sunlight into electricity, integrating smoothly with the utility grid. Each component plays a key role in providing clean, dependable energy for your home.
SOLAR PANELS
Maximising Solar Capture
Panels convert sunlight into direct current (DC) electricity. ZEN’s high-efficiency solar panels deliver long-lasting performance and maximum energy capture, powering your home efficiently and increasing savings.
Solar Inverter
SMOOTH Power Conversion
The inverter converts DC from your panels into AC for household use. High-efficiency inverters adapt to changing energy needs, ensuring reliable performance and optimising overall energy efficiency.
Why Go with a Panel-Only Solar System
EFFICIENT, RELIABLE ENERGY FOR YOUR HOME
A panel-only solar system provides a practical way to lower electricity bills while earning credits for surplus energy exported to the grid. Ideal for homes with stable grid access, it delivers long-term savings, energy efficiency, and environmental benefits.
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Advantages
Lower installation cost
Less expensive than hybrid and off-grid systems.
Eligibility for export credits
Sell excess electricity back to the grid, reducing energy bills further.
Reduced carbon footprint
Use clean solar energy, reducing greenhouse gas emissions.
Considerations
Dependence on grid availability
Relies on the grid for operation and won’t produce power during outages.
No power during outages
Without battery backup, it cannot supply electricity when the grid is down.
Grid-tied solar vs. other systems
Understanding Your Solar Options
This table provides a clear comparison of grid-tied, hybrid, and off-grid systems, helping you evaluate the key differences and make an informed decision for your energy needs.
Considerations
Grid-tied solar system
Hybrid battery solar system
Off-grid solar system
Initial cost (incl. GST)
From $14,000
From $24,500
From $38,700
Dependence on grid
Full
Partial
None
Backup during outages
No
Yes
Yes
Electricity bills
Average 60% savings + Export Credits
Average 80% savings + Export Credits
None
Ideal for
Urban / suburban areas, lower initial investment
Unreliable grid areas, those seeking backup
Remote locations, full independence
Maintenance
Low
Medium (battery care)
Medium (battery care)
Scalability
High
High
Limited
Environmental impact
Low
Lower
Lowest
Payback period
5-8 Years
7-10 Years
NA
Solar system pricing
SOLAR SOLUTIONS FOR YOUR ENERGY NEEDS
Our grid-tied solar system options provide tailored solutions to meet your energy goals. Flexible starting prices suit a range of households, making sustainable energy more accessible.
Low power usage
Small system*
- Monthly Bill: $150 to $250
- Annual Consumption (kWh): 7,000 to 9,000
- Household Size: Up to 4 people
- Appliances: Standard use
Medium power usage
Mid-sized system*
- Monthly Bill: $250 to $350
- Annual Consumption (kWh): 9,000 to 12,000
- Household Size: 4-5 people
- Appliances: Medium use (e.g spa, EV)
High power usage
Large system*
- Monthly Bill: $350+
- Annual Consumption (kWh): 12,000+
- Household Size: 5+ people
- Appliances: Heavy use (e.g spa, EV, pool, central and/or underfloor heating)
Find out what AFFECTS the cost of your Grid-Tied system
Energy needs
System size typically scales with consumption levels, directly affecting cost.
Components quality
High-grade panels, inverters, and batteries impact cost and long-term reliability.
Install complexity
Cost is influenced by roofing, site specifics, wiring needs, and scaffolding.
Energy goals
Grid independence or substantial energy savings goals necessitate a larger system.
Custom solutions
Personalised energy systems for unique requirements (e.g. smart homes) alter the financial outlay.
Tech upgrades
Smart tech and EV charging integration increase both efficiency and initial cost.
Grid-tied solar savings case study
LOWER BILLS AND A GREENER FOOTPRINT
With a $11,932 investment, these homeowners installed a 5.28kW grid-tied solar system with 12 LONGi 440W panels and a RedBack SI5000 5.0kW inverter, targeting a 60% self-consumption rate. Their average monthly bill dropped from $242 to $86.22—a 64.37% savings.
Over 25 years, projected savings reach $63,930.21, considering rising electricity rates and income from selling excess power back to the grid. This system also equals the CO₂ absorption of 40 trees and powers 528 light bulbs continuously, reducing their environmental impact.
Monthly Bill Savings
$250
$200
$150
$100
$50
0
($242)
($86)
Cumulative Savings
$80,000
$60,000
$40,000
$20,000
0
Real-life solar success journey:
Energy cost savings & environmental benefits
$63,930.21
Total savings
Total savings: $63,930.21 in combined savings and export credits amassed over 25 years, netting $51,992.21 after recouping the initial $11,932 investment.
6.01 Years
Payback period
Payback period: The solar system's initial investment is recouped in only 6.01 years.
16.65%
Annualised ROI
Annualised ROI: An impressive 16.65% annual return on the solar energy system investment.
40
Trees' carbon work
Tree's carbon work: Equivalent to the environmental impact of 40 trees absorbing CO2 every year.
528
Light bulbs powered
Light bulbs powered: Lighting up 528 bulbs non-stop for 25 years, all through clean, solar energy.
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Typical installation of a grid-tied solar system takes 8-10 weeks, depending on your home’s setup, roof type, and any required permits.
Green Home Loans helps you install solar panels with $0 upfront and manageable repayments. The process involves application, approval, and financing tailored to your energy goals.
Ready TO take control of your power?
Start your switch to solar today. Get in touch and we can support your journey to energy savings, sustainability and self-sufficiency.