Cost Comparison
| Energy Source | Cost per kWh | Annual Cost (500 kWh) | Notes |
|---|---|---|---|
| Balcony Solar | $0.00-0.02 | $0-10 | After payback, essentially free |
| Grid Electricity | $0.10-0.30 | $50-150 | Varies by state and usage |
| Gas Generator | $0.15-0.25 | $75-125 | Plus fuel costs, maintenance |
| Battery Power Station | $0.20-0.40 | $100-200 | High upfront cost, limited capacity |
| Portable Solar Generator | $0.10-0.20 | $50-100 | After initial investment |
Detailed Comparison
Balcony Solar (Winner)
Pros
- ✓ Lowest long-term cost
- ✓ Zero emissions
- ✓ No fuel needed
- ✓ Quiet operation
Cons
- × Upfront investment ($1,000-$2,000)
- × Weather dependent
- × Space requirements
Best for: Long-term savings, environmental impact, reducing electricity bills
Grid Electricity
Pros
- No upfront cost
- Reliable, always available
- No maintenance
Cons
- Ongoing monthly costs
- Rates increase over time
- Environmental impact
Gas Generators
Pros
- Portable, flexible
- Works in any weather
- High power output
Cons
- Ongoing fuel costs
- Noise and emissions
- Maintenance required
Environmental Impact
0 lbs
CO2 per year
Balcony Solar
~500 lbs
CO2 per year
Grid Electricity
~1,200 lbs
CO2 per year
Gas Generator
* Based on 500 kWh annual production/consumption
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Pro Tip
For most people, balcony solar offers the best combination of cost savings and environmental benefits. Calculate your specific savings with our free calculator to see how it compares to your current electricity costs.