Solar Savings Equation:
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The solar savings calculation estimates your financial savings from a solar panel system by comparing the value of electricity generated to the system cost.
The calculator uses the solar savings equation:
Where:
Explanation: The equation calculates your net savings by subtracting the system cost from the value of electricity generated.
Details: Understanding potential savings helps evaluate the financial viability of solar panel installation and estimate payback period.
Tips: Enter accurate values for kWh generated, current electricity rate, and total system cost. All values must be positive numbers.
Q1: What time period does this calculation cover?
A: This calculates savings for the period matching your generation input (typically annual savings).
Q2: Should I include incentives in the cost?
A: Use your net system cost after applying all tax credits, rebates, and incentives.
Q3: How do I estimate my kWh generation?
A: Solar installers provide estimates, or you can use PVWatts Calculator from NREL.
Q4: Does this account for electricity rate changes?
A: No, this uses current rates. For long-term projections, account for expected rate increases.
Q5: What other factors affect actual savings?
A: System degradation, shading, panel orientation, local weather patterns, and changes in electricity usage patterns.