10kW
Designed for Large Households with High Energy Needs
A 10kW solar system is ideal for larger households with high daily energy consumption of 30-45kWh per day. This system can generate a significant amount of power, drastically reducing your reliance on grid electricity and helping you take control of your energy costs.
Maximise Solar Self-Consumption
With feed-in tariffs as low as $0.05 per kWh, exporting excess energy to the grid won’t provide large financial returns. Instead, using as much solar energy during daylight hours for appliances and devices can greatly increase your savings. Shifting your energy use to daytime hours when your system generates the most power is key to optimising returns from a 10kW solar system.
Tailored for Low, Medium, and High Daytime Usage
The 10kW solar system is designed to meet the needs of homes with low, medium, and high daytime consumption. Below, we outline detailed savings scenarios for each type of energy usage pattern and provide the ideal average daily consumption for each case.
Savings Scenario for a 10kW Solar System
Below are potential savings scenarios for homes in Adelaide based on low, medium, and high daytime consumption patterns. We’ll assume grid electricity costs $0.40 per kWh and the feed-in tariff is $0.05 per kWh.
Scenario 1: Low Daytime Consumption (30% Daytime / 70% Night-Time)
Ideal Average Daily Consumption: 40-45kWh/day
For households that use 40-45kWh per day with low daytime consumption, a 10kW system can generate enough power to meet your daytime needs while exporting large amounts of excess energy to the grid.
1. Without Solar (100% Grid Electricity)
- Daily Electricity Usage: 45kWh
- Cost per Day: 45kWh x $0.40 = $18.00/day
- Annual Cost: $18.00 x 365 = $6,570/year
2. 10kW Solar System (Low Daytime Consumption)
- Solar Generation: A 10kW system generates approximately 40-44kWh per day on average in Adelaide.
- Daytime Self-Consumption (30%): 30% of 45kWh = 13.5kWh/day (covered by solar)
- Excess Exported to Grid (70%): 26.5-30.5kWh/day exported at $0.05 = $1.32-1.53/day
- Savings from Self-Consumption: 13.5kWh x $0.40 = $5.40/day
- Feed-In Tariff Earnings: $1.32-1.53/day
- Total Daily Savings: $5.40 + $1.42 = $6.82/day
- Annual Savings: $6.82 x 365 = $2,488.30/year
Shifting Energy to Daytime for Extra Savings
Shifting more energy to daytime hours (e.g., moving to 40% daytime consumption) can increase your savings:
- Daytime Self-Consumption (40%): 40% of 45kWh = 18kWh/day
- Savings from Self-Consumption: 18kWh x $0.40 = $7.20/day
- Annual Savings: $7.20 x 365 = $2,628/year
Scenario 2: Medium Daytime Consumption (50% Daytime / 50% Night-Time)
Ideal Average Daily Consumption: 35-40kWh/day
For homes using 35-40kWh per day with 50% daytime energy consumption, a 10kW solar system can significantly reduce your energy costs by covering half of your energy needs during the day.
1. Without Solar (100% Grid Electricity)
- Daily Electricity Usage: 40kWh
- Cost per Day: 40kWh x $0.40 = $16.00/day
- Annual Cost: $16.00 x 365 = $5,840/year
2. 10kW Solar System (Medium Daytime Consumption)
- Solar Generation: 40-44kWh per day
- Daytime Self-Consumption (50%): 50% of 40kWh = 20kWh/day (covered by solar)
- Excess Exported to Grid (50%): 20-24kWh/day exported at $0.05 = $1.00-1.20/day
- Savings from Self-Consumption: 20kWh x $0.40 = $8.00/day
- Feed-In Tariff Earnings: $1.00-1.20/day
- Total Daily Savings: $8.00 + $1.10 = $9.10/day
- Annual Savings: $9.10 x 365 = $3,321.50/year
Shifting More Usage to Daytime
By shifting more of your energy usage to the daytime (e.g., to 60% daytime consumption), you can further increase your savings:
- Daytime Self-Consumption (60%): 60% of 40kWh = 24kWh/day
- Savings from Self-Consumption: 24kWh x $0.40 = $9.60/day
- Annual Savings: $9.60 x 365 = $3,504/year
Scenario 3: High Daytime Consumption (80% Daytime / 20% Night-Time)
Ideal Average Daily Consumption: 30-35kWh/day
For households that use 30-35kWh per day with high daytime consumption (80% of energy during the day), a 10kW system can cover nearly all of your daytime energy needs, maximising your solar savings.
1. Without Solar (100% Grid Electricity)
- Daily Electricity Usage: 35kWh
- Cost per Day: 35kWh x $0.40 = $14.00/day
- Annual Cost: $14.00 x 365 = $5,110/year
2. 10kW Solar System (High Daytime Consumption)
- Solar Generation: 40-44kWh per day
- Daytime Self-Consumption (80%): 80% of 35kWh = 28kWh/day (covered by solar)
- Excess Exported to Grid (20%): ~12-16kWh/day exported at $0.05 = $0.60-0.80/day
- Savings from Self-Consumption: 28kWh x $0.40 = $11.20/day
- Feed-In Tariff Earnings: $0.60-0.80/day
- Total Daily Savings: $11.20 + $0.70 = $11.90/day
- Annual Savings: $11.90 x 365 = $4,343.50/year
Maximising Savings for High Daytime Users
If you shift even more energy use to daylight hours (e.g., 90% daytime consumption), you can further increase savings:
- Daytime Self-Consumption (90%): 90% of 35kWh = 31.5kWh/day
- Savings from Self-Consumption: 31.5kWh x $0.40 = $12.60/day
- Annual Savings: $12.60 x 365 = $4,599/year
Total Benefit Over Grid-Only Use:
- Low Daytime Consumption (40-45kWh): $2,488.30/year saved
- Medium Daytime Consumption (35-40kWh): $3,321.50/year saved
- High Daytime Consumption (30-35kWh): $4,343.50/year saved
An 10kW solar system offers significant savings for homes with varying energy usage patterns. By shifting more energy consumption to daylight hours, households with high daytime consumption can save up to $4,343.50 per year, while those with medium or low daytime consumption can also enjoy substantial savings.
Find Your Best Solar Savings Solution
For a detailed, personalised recommendation based on your home’s energy consumption, try our AI Home Energy Analyser. This tool helps you determine the best way to maximise savings with a 10kW solar system tailored to your needs.
Click here to get your free, personalised solar quote.