Why Real Numbers Matter
Theory is useful. Real numbers are better. This case study follows a typical Nicosia family β a four-person household in a 180 mΒ² detached home in Strovolos β through the complete financial story of their 6 kWp solar installation in 2026. Every number is based on actual market prices, current EAC tariffs, and MECI grant rates.
The Property and Its Consumption
The Kyriakou family home has:
- Annual electricity consumption: 8,400 kWh
- Monthly EAC bill average: β¬148 (ranging from β¬80 in winter to β¬220 in summer)
- South-facing roof: 42 mΒ² usable area
- Existing EAC single-phase meter
- No previous solar installation
This is a textbook 6 kWp candidate.
System Specification
The installed system:
- 15 Γ 400 W monocrystalline TOPCon panels (Jinko Tiger Neo or equivalent)
- Sungrow SG6.0RT string inverter (non-hybrid, to keep cost low; hybrid upgrade planned in 2028)
- South-facing, 28Β° tilt
- Wiring, DC isolators, generation meter, monitoring gateway
Upfront Cost Breakdown
| Item | Cost |
|---|---|
| Solar panels (15 Γ 400 W) | β¬3,900 |
| Sungrow SG6.0RT inverter | β¬1,100 |
| Mounting system | β¬550 |
| Cabling and electrical | β¬480 |
| Installation labour | β¬850 |
| Monitoring gateway | β¬180 |
| EAC net metering application | β¬120 |
| Gross total | β¬7,180 |
| MECI residential grant (40%) | ββ¬2,872 |
| Net cost to homeowner | β¬4,308 |
Annual Generation and Savings: Year 1
Nicosia receives approximately 5.5 peak sun hours per day on average (higher in summer, lower in winter). A 6 kWp system at 28Β° south-facing tilt, accounting for inverter and wiring losses (~15%):
β Numbers speak louder: calculate your annual solar return and take the guesswork out.
Annual generation: 6 kWp Γ 5.5 hrs Γ 365 days Γ 0.85 = ~10,250 kWh
This is more than the household's annual consumption of 8,400 kWh β a common situation in Cyprus where the solar resource is so high. The system exports surplus in high-generation months.
Self-consumption pattern:
- Direct self-consumption (panel generation consumed immediately): ~55% = 5,638 kWh
- Exported to EAC grid via net metering: ~45% = 4,612 kWh
- Night/morning import from EAC: ~2,762 kWh
Financial impact Year 1:
| Saving Type | Calculation | Amount |
|---|---|---|
| Avoided imports (self-consumption) | 5,638 kWh Γ β¬0.195 avg rate | β¬1,099 |
| EAC net metering credit (export) | 4,612 kWh Γ β¬0.100 | β¬461 |
| Night-time import cost | 2,762 kWh Γ β¬0.195 | ββ¬539 |
| Net annual saving | β¬1,021 | |
| Previous annual EAC bill | β¬1,776 | |
| New annual EAC bill | β¬755 | |
| Year 1 bill reduction | 57% |
Simple Payback Period
- Net system cost after grant: β¬4,308
- Year 1 net saving: β¬1,021
- Simple payback: 4.2 years
This assumes flat EAC tariffs. With the 3β4% annual tariff increase Cyprus has seen historically, the payback shortens to approximately 3.7β3.9 years.
25-Year Financial Projection
| Period | Cumulative Saving | Notes |
|---|---|---|
| Year 1 | β¬1,021 | First full year |
| Year 5 | β¬5,340 | Payback achieved |
| Year 10 | β¬11,900 | Panel degradation 4β5% to date |
| Year 15 | β¬19,800 | Inverter replacement likely (β¬900ββ¬1,200) |
| Year 25 | β¬35,500 | Net of inverter replacement cost |
At Year 25, the household has saved approximately β¬35,500 (nominal, not inflation-adjusted) against a net investment of β¬4,308 β a return of approximately 8.2Γ the net investment, or around 11% IRR.
The inverter will need replacement at Year 12β15 (budget β¬900ββ¬1,200 for a Sungrow replacement in today's money). The panels carry a 25-year linear power warranty guaranteeing at least 84.8% of rated output.
β Your bill, your roof, your result β find out your solar savings now.
Adding a Battery in 2028
The Kyriakou family plans to add a Sungrow SBR 9.6 kWh battery when they upgrade to a hybrid inverter in 2028. At current prices (declining from β¬480/kWh today), this should cost approximately β¬4,000ββ¬5,000 net of the battery storage subsidy. The battery will capture the 4,612 kWh of currently exported generation, shifting more of it to evening self-consumption and reducing night-time imports further. Projected additional annual saving: β¬380ββ¬450, shortening the battery-specific payback to 10β12 years.
Key Takeaways
- A 6 kWp system in Nicosia pays back in around 4 years net of grants
- Annual EAC bills drop by around 57% in Year 1
- The 25-year return is approximately 8Γ the net investment
- Adding a battery in a few years further improves economics as battery costs continue to fall