Solar Savings Calculator
Calculate monthly and yearly savings from your solar energy system
System Configuration
System Parameters
Usage & Export
Generation Summary
Monthly Savings
Long-term Savings
Generation Breakdown
Quick Summary
Detailed Breakdown
How Solar Savings Calculation Works
Generation Calculation
Daily generation = System size × Peak sun hours × Efficiency = 5 kW × 5 hrs × 80% = 20 kWh
Usage & Export Split
Self consumption: 420 kWh (70%) | Export: 180 kWh (30%)
Savings Calculation
Monthly savings = (Self consumed × Rate) + (Exported × Export rate) = ₹3,360 + ₹540 = ₹3,900
Key Factors
System efficiency includes inverter losses and other factors. Self consumption depends on usage patterns and load timing.
Solar Savings Optimization
Maximize Self Consumption:
- • Load Shifting: Use appliances during day hours
- • Battery Storage: Store excess for evening use
- • Smart Timing: Schedule washing machine, dishwasher
- • EV Charging: Charge electric vehicles during day
System Optimization:
- • Panel Orientation: South-facing for maximum sun
- • Tilt Angle: Optimize for your latitude
- • Shading: Minimize shadows on panels
- • Maintenance: Clean panels regularly
Your 5 kW System Potential:
The Solar Savings Calculator estimates how much you'll save on electricity bills after installing solar, factoring in how much power you consume directly versus export to the grid at a separate feed-in rate — useful for homeowners comparing self-consumption strategies.
Solar Savings Calculator - FAQs
How are monthly solar savings calculated?
Monthly savings = (self-consumed units × your electricity rate) + (exported units × the export/feed-in rate). Self-consumed units reduce your bill directly, while exported power earns credit, usually at a lower export rate.
What is "self-consumption" and why does it matter?
It's the percentage of solar power you use as it's generated rather than exporting to the grid. Since self-consumed units usually save more per unit than exported units earn, higher self-consumption generally means higher overall savings.
How can I increase my self-consumption percentage?
Shifting usage — like running washing machines, water heaters or EV charging during daylight hours — to match generation, or adding battery storage, increases the share of power you consume directly.
Why do 25-year projected savings assume a 5% annual rate increase?
Electricity tariffs in India have historically risen a few percent most years, so the long-term projection compounds this increase. Actual future tariffs may be higher or lower.
Is the export or feed-in rate the same everywhere?
No, net metering export rates vary by state and utility and change periodically, so confirm your local DISCOM's current rate for an accurate savings estimate.
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