The income of solar power plants in Iran depends on various factors, including the plant’s capacity, geographical location, electricity selling tariffs, and the season. Below is the monthly income calculated for different types of power plants:
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1. 5 kW Solar Power Plant (Residential Scale)
• Monthly Production:
Approximately 450–700 kilowatt-hours (assuming an average irradiation of 5.5 hours per day and an efficiency of 80%).
• Income from Sales to SATBA:
– Base Tariff: 3,000 Tomans/kilowatt-hour.
– Calculation: 700 × 3,000 = 2,100,000 Tomans.
• Deductions:
– Maintenance Costs (3% of income): ≈63,000 Tomans.
– Annual Efficiency Loss (1%): ≈21,000 Tomans.
• Net Monthly Income:
1.8–2.1 million Tomans.
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2. 100 kW Solar Power Plant (Commercial Scale)
• Monthly Production:
9,000–14,000 kilowatt-hours (high irradiation in areas like Yazd).
• Income from Energy Exchange:
– Average Price: 5,000 Tomans/kilowatt-hour.
– Calculation: 14,000 × 5,000 = 70,000,000 Tomans.
• Income with Domestic Equipment:
– Additional Income of 30% using Iranian panels: 91 million Tomans.
• Deductible Costs:
– Maintenance (2%): ≈1.8 million Tomans.
• Net Monthly Income:
65–90 million Tomans.
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3. 1 MW Solar Power Plant (Industrial Scale)
• Monthly Production:
145,000–150,000 kilowatt-hours (in high irradiation areas like Kerman).
• Income from SATBA + Exchange:
– Sales Composition (70% SATBA + 30% Exchange):
SATBA: 150,000 × 0.7 × 3,000 = 315 million Tomans.
Exchange: 150,000 × 0.3 × 5,000 = 225 million Tomans.
– Total Income: 540 million Tomans.
• Costs:
– Maintenance (2% of initial investment): ≈800 million Tomans annually (≈67 million Tomans monthly).
• Net Monthly Income:
470–500 million Tomans.
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4. Seasonal Impact on Monthly Income
• Summer:
A 20–30% increase in income due to higher irradiation and longer days.
Example: A 5 kW plant can earn up to 2.7 million Tomans.
• Winter:
A decrease of 15–20% in income due to shorter and cloudier days.
Example: A 100 kW plant can earn up to 55 million Tomans.
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5. Role of Geographical Location
• High-Yield Areas (Yazd, Kerman, Fars):
Income is 25–30% higher than the national average (irradiation ≥2,200 kilowatt-hours/square meter).
• Low-Yield Areas (Northern Iran):
A decrease of 30–40% in income due to lower irradiation and cloudier days.
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6. Optimizing Income with Key Strategies
1. Use of Iranian Panels:
A 30% increase in income by utilizing SATBA’s incentive tariff.
2. Combined Sales in Energy Exchange:
Selling 30–50% of electricity during peak hours (price of 6,000 Tomans/kilowatt-hour).
3. Cost Reduction:
Installing solar trackers (25% increase in production) and monthly cleaning of panels.
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Conclusion
• 5 kW Plant: Monthly Income ≈ 2 million Tomans.
• 100 kW Plant: Monthly Income ≈ 80 million Tomans.
• 1 MW Plant: Monthly Income ≈ 500 million Tomans.
Golden Suggestion:
> Establishing a power plant in Yazd or Kerman with a combination of SATBA and exchange sales, using Iranian panels and battery storage for maximum profitability. In this case, the payback period can be reduced to 3–5 years.
