WA Solar Battery Rebate

The rebate amount scales with battery capacity, up to the maximum threshold:

*Rebate capped at maximum for 10kWh

As Perth Solar Direct's analysis shows, the optimal battery size for maximizing rebate value is 10kWh, which qualifies for the full rebate amount while minimizing the per-kWh cost after incentives.

For eligible households, combining the rebate with the interest-free loan program can result in zero upfront cost:

Scenario 1: 10kWh Battery (Synergy Customer)

• System cost: $12,000
• Rebate: $5,000
• Remaining cost: $7,000
• Interest-free loan: $7,000
• Upfront cost: $0
• Monthly repayment (10 years): $58.33

Scenario 2: 10kWh Battery (Horizon Power Customer)

• System cost: $12,000
• Rebate: $7,500
• Remaining cost: $4,500
• Interest-free loan: $4,500
• Upfront cost: $0
• Monthly repayment (10 years): $37.50

Scenario 3: 5kWh Battery + 3kW Solar Upgrade (Synergy Customer)

• Battery cost: $7,500
• Solar upgrade: $3,000
• Total cost: $10,500
• Battery rebate: $2,500
• Remaining cost: $8,000
• Interest-free loan: $8,000
• Upfront cost: $0
• Monthly repayment (10 years): $66.67



Perth Solar Direct can help determine your eligibility for the interest-free loan program and calculate your specific repayment scenario based on your household needs.

Battery systems generate savings through several mechanisms:

Time-of-Use Arbitrage:

• Store cheap solar energy during the day
• Avoid expensive grid electricity during peak evening hours (typically 3pm-9pm)
• Average monthly savings: $80-$100

Increased Self-Consumption:

• Typical solar-only household self-consumption: 30-40%
• Solar + battery self-consumption: 70-90%
• Additional monthly savings: $30-$50

Reduced Demand Charges:

• Applicable for customers on time-of-use tariffs
• Potential monthly savings: $10-$30

Virtual Power Plant Participation:

• Revenue from grid support services
• Potential monthly earnings: $5-$20

Total monthly savings typically range from $100-$125 ($1,200-$1,500 annually), with Perth Solar Direct customers reporting higher savings during summer months when solar production is at its peak.

Modern battery systems typically have a 10-15 year warranty period, with many expected to continue functioning beyond this timeframe.

The long-term benefits include:

Total Savings Over 10 Years:

• 5kWh system: $7,500-$9,000
• 10kWh system: $12,000-$15,000
• Net profit after system cost (10kWh Synergy): $5,000-$8,000
• Net profit after system cost (10kWh Horizon): $7,500-$10,500

Protection Against Rising Electricity Prices:

• WA electricity prices have risen approximately 3-5% annually
• Battery systems provide a hedge against future price increases
• Potential additional savings: $3,000-$5,000 over system lifetime

Property Value Enhancement:

• Homes with battery storage typically command higher resale values
• Estimated property value increase: 2-5% according to recent real estate analyses

Perth Solar Direct customers report that the peace of mind and energy independence provided by battery storage often outweigh even these substantial financial benefits.

For households seeking maximum energy independence, premium systems also become more attainable:

10kWh Premium Battery System:

• Pre-rebate cost: $14,000
• Synergy rebate: $5,000
• Net cost: $9,000
• With interest-free loan: $0 upfront, $75/month

10kW Solar + 13.5kWh Battery + Backup Gateway:

• Pre-rebate cost: $25,000
• Synergy rebate: $5,000 (maximum)
• Net cost: $20,000
• With interest-free loan: $10,000 upfront, $83.33/month

Perth Solar Direct offers premium systems with advanced features like blackout protection, smart home integration, and enhanced monitoring capabilities, all of which become more accessible with the rebate program.

When evaluating the full lifecycle costs and benefits:

10kWh Battery System (10-Year Analysis):

• Initial cost after rebate: $7,000 (Synergy customer)
• Maintenance costs: Minimal to none
• Replacement parts: Typically not required within warranty period
• Electricity savings: $12,000-$15,000
• Net financial benefit: $5,000-$8,000
• Return on investment: 71-114%

5kWh Battery System (10-Year Analysis):

• Initial cost after rebate: $5,000 (Synergy customer)
• Maintenance costs: Minimal to none
• Replacement parts: Typically not required within warranty period
• Electricity savings: $7,500-$9,000
• Net financial benefit: $2,500-$4,000
• Return on investment: 50-80%

This total cost of ownership analysis demonstrates that battery systems represent not just an energy solution but a sound financial investment for Western Australian households.

The battery rebate can be combined with existing federal solar incentives:

Small-scale Renewable Energy Scheme (SRES):

• Applies to new solar panel installations
• Creates Small-scale Technology Certificates (STCs)
• Typical benefit: $2,500-$3,500 for a 6.6kW system
• Can be combined with battery rebate when installing both systems

Combined Incentive Example:

• 6.6kW solar system with 10kWh battery
• Federal STC discount: $3,000 (approximate)
• WA battery rebate: $5,000 (Synergy customer)
• Total incentives: $8,000
• System cost reduction: 40-50%

Perth Solar Direct handles all paperwork for both incentive programs, ensuring customers receive the maximum available benefits.

Understanding the tax treatment of battery incentives and savings:

Rebate Tax Treatment:

• Government rebates for residential battery systems are generally not considered taxable income
• No GST is typically payable on the rebate amount
• No tax deduction is available for the battery system cost for residential installations

Electricity Savings Tax Treatment:

• Reduced electricity bills result in after-tax savings
• No tax is payable on self-generated and consumed electricity
• Credits received through the DEBS program for residential properties are not considered taxable income

Property Value Implications:

• Increased home value from battery installation may affect capital gains calculations upon property sale
• Energy efficiency improvements may qualify for specific tax incentives in future programs

Perth Solar Direct recommends consulting with a tax professional regarding your specific situation, though residential battery installations typically have favorable tax treatment with benefits received tax-free.

By taking advantage of the WA Residential Battery Scheme, Perth homeowners can significantly improve the economics of battery storage while gaining energy independence and contributing to a more sustainable grid. Perth Solar Direct is ready to help you navigate these incentives and design a system that maximizes your financial benefits.