Expected Energy Bill Savings from a 39kW Solar Power System

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A 39kW solar power system is a powerful solution for drastically reducing electricity costs, particularly for larger households, businesses, or properties with high energy demands. With an average daily generation of approximately 163.8 kWh (based on 4.2 kWh per kWp), this system offers even greater savings potential. Below is a detailed estimate of the savings you could expect based on different levels of self-consumption and feed-in to the grid.

Scenario 1: 30% Self-Consumption, 70% Feed-In

• Self-Consumption: 30% of 163.8 kWh = 49.14 kWh/day

• Feed-In: 70% of 163.8 kWh = 114.66 kWh/day

Savings Calculation:

• Value of Self-Consumption: 49.14 kWh x $0.40 = $19.66/day

• Value of Feed-In: 114.66 kWh x $0.05 = $5.73/day

• Total Daily Savings: $19.66 + $5.73 = $25.39/day

• Total Annual Savings: $25.39 x 365 = $9,266.35

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Scenario 2: 50% Self-Consumption, 50% Feed-In

• Self-Consumption: 50% of 163.8 kWh = 81.9 kWh/day

• Feed-In: 50% of 163.8 kWh = 81.9 kWh/day

Savings Calculation:

• Value of Self-Consumption: 81.9 kWh x $0.40 = $32.76/day

• Value of Feed-In: 81.9 kWh x $0.05 = $4.10/day

• Total Daily Savings: $32.76 + $4.10 = $36.86/day

• Total Annual Savings: $36.86 x 365 = $13,455.90

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Scenario 3: 100% Self-Consumption

• Self-Consumption: 100% of 163.8 kWh = 163.8 kWh/day

• Feed-In: 0% of 163.8 kWh = 0 kWh/day

Savings Calculation:

• Value of Self-Consumption: 163.8 kWh x $0.40 = $65.52/day

• Value of Feed-In: 0 kWh x $0.05 = $0/day

• Total Daily Savings: $65.52/day

• Total Annual Savings: $65.52 x 365 = $23,910.80

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Key Takeaways

• Maximum Savings: Achieved with 100% self-consumption, potentially saving you $23,910.80 annually.

• Balanced Approach: A 50% self-consumption and 50% feed-in split can deliver impressive savings of $13,455.90 annually.

• Feed-In Focused: Even with a higher feed-in ratio (70%), you can expect savings of $9,266.35 annually.

With a 39kW solar power system, you can achieve substantial reductions in your electricity costs, particularly by maximizing self-consumption. This system is ideal for those looking to significantly decrease their reliance on the grid and enjoy the enhanced financial benefits of solar energy.