Your Battery ROI Calculator

Estimate savings based on your household energy usage.
YOUR HOME ENERGY USE
Your postcode is used to estimate battery's ROI based on local energy rates and solar conditions.
Your total grid electricity use over a quarter.
kWh
What you pay per kilowatt-hour from the grid.
/kWh
Daily fee you pay to stay connected to the grid.
/day
Your current solar system size in kilowatts.
kW
What you're paid per kilowatt-hour exported to the grid.
/kWh
System size you plan to install in kilowatts.
kW
Battery size you're considering in kilowatt-hours.
kWh
Estimated costs for solar, battery or both.
$
Estimated Annual Savings $0
Estimated Annual ROI 0%
Estimated Payback Period –
Battery & Solar Investment Analysis
Report generated: 19 December 2025 at 06:34 pm
Report ID: GS-549478
ANNUAL SAVINGS
$4,375
Estimated yearly savings
ANNUAL ROI
79.5%
Return on investment
PAYBACK PERIOD
1.3 yrs
Years to break even
INVESTMENT SUMMARY
Total System Cost: $5,500
Battery Size: 30 kWh
Solar System: 13 kW (existing)
Investment Type: Battery + Existing Solar
What This Means For You:
Based on your inputs, a 30kWh battery system could save you approximately $4,375 annually. This represents a 79.5% return on your investment, with the system paying for itself in about 1.3 years.
YOUR INPUT DETAILS
Location (Postcode): 3752
Quarterly Electricity Use: 2,520 kWh
Electricity Rate: $0.4700/kWh
Daily Supply Charge: $1.19/day
Current Solar: 13 kW
Feed-in Tariff: Not applicable
Planned Solar Addition: None
Calculation Date: 19 December 2025
HOW WE CALCULATED THIS
Calculation Methodology:
  • Annual grid electricity use = Quarterly use × 4
  • Battery energy output = Size × 365 days × 1 cycle/day × 85% efficiency
  • Savings = (Energy offset by battery × electricity rate) + (Solar generation × electricity rate)
  • ROI = (Annual savings ÷ System cost) × 100%
  • Payback period = System cost ÷ Annual savings
💡 Simple Explanation:
Your battery stores energy when electricity is cheap (or from solar) and releases it when electricity is expensive, reducing your grid consumption and saving you money. Think of it as a piggy bank for your solar energy!
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Battery & Solar Investment Analysis
Report ID: GS-549478 | Page 2 of 2
IMPORTANT DISCLAIMER
DISCLAIMER: This report provides estimates only and is based on the information you have provided. The calculations are illustrative and for informational purposes. Actual savings and returns may vary significantly based on various factors including:

• Your actual energy consumption patterns and behaviors
• Local weather conditions and solar irradiance
• Future changes in electricity rates and feed-in tariffs
• Battery performance degradation over time (typically 0.5-2% per year)
• Maintenance requirements and potential system issues
• Government policy changes and incentive programs
• Installation quality and component performance
• Your specific usage patterns and energy habits

Key Assumptions in This Calculation:
• Battery cycles: 1 full cycle per day
• Battery efficiency: 85% (round-trip)
• Solar generation: Based on Australian average of 4kWh per kW per day
• Electricity rates: Remain constant throughout the year
• No significant changes to energy consumption patterns

This is not financial advice. We recommend:
• Consulting with a qualified financial advisor before making investment decisions
• Obtaining multiple quotes from accredited installers
• Considering all available government rebates and incentives
• Reviewing product warranties and performance guarantees
• Conducting a professional energy audit of your property

Goldsure Pty Ltd does not guarantee any specific financial returns or savings. All figures are estimates only and should be verified with professional assessment. Your actual results may differ from these estimates.
CONTACT GOLDSURE
GOLDSURE PTY LTD
Phone: 03 7050 2846
Email: info@goldsure.com.au
Address: Suite 4, Level 1, 293 High Street
Preston, Victoria 3072
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Goldsure Pty Ltd | ABN: 66 683 305 106
This document is confidential and intended only for the recipient.