Bulgaria Solar & Battery Guide
Quick Verdict
Solar panels: Excellent investment Payback 6.3 years (reference model: 5 kWp, 8,500 kWh demand, no battery).
Batteries: Marginal — calculate carefully.
Key insight: Bulgaria has the BEST solar economics in the EU. Excellent solar yield (~1,300 kWh/kWp), low system costs, and a generous 20-year guaranteed feed-in tariff (€0.108/kWh) that nearly matches the retail price (€0.12/kWh). Net metering is also available. This is the easiest solar decision in Europe.
Key Statistics
Electricity Prices (2025–2026)
| Tariff | Price | Notes |
|---|---|---|
| Standard residential | €0.12/kWh | Flat rate — same price 24/7 |
| Feed-in (export) | €0.108/kWh | What the grid pays for excess solar |
| Gas | ~€0.07/m³ | ~10 kWh/m³ |
kWh = kilowatt-hour: The unit on your electricity bill. A 1,000-watt appliance running for one hour uses 1 kWh. An average European home uses about 250–350 kWh per month.
Solar Potential
| Region | Solar Output per kWp | 5 kWp System Annual |
|---|---|---|
| Sofia | 1300 kWh/yr | 6,500 kWh |
| Plovdiv (S) | 1350 kWh/yr | 6,750 kWh |
| Varna (Coast) | 1400 kWh/yr | 7,000 kWh |
| Burgas (Coast) | 1380 kWh/yr | 6,900 kWh |
| Ruse (N) | 1280 kWh/yr | 6,400 kWh |
kWp (kilowatt-peak): The maximum power a solar system can produce in perfect midday sun. A 5 kWp system = roughly 12–15 panels. Think of it as the "engine size" of your solar setup.
Bulgaria has excellent solar potential. Among the best in Europe.
Electricity Generation Mix
Understanding how Bulgaria generates its electricity helps explain why solar is (or isn't) incentivised.
| Source | Share |
|---|---|
| Nuclear | 39.1% |
| Coal | 22.5% |
| Hydro | 6.7% |
| Solar PV | 18.2% |
| Biofuels | 4.5% |
Source: Our World in Data (2025). Total generation: 38 TWh.
Who Uses the Electricity?
| Sector | Share of Consumption |
|---|---|
| Industry | 28.9% |
| Residential (households) | 39% |
| Commercial & Public | 25.5% |
| Transport | 1.3% |
A large share of electricity goes to households — meaning rooftop solar has a big addressable market.
Subsidies & Incentives
| Program | Type | Status | Notes |
|---|---|---|---|
| Guaranteed feed-in tariff | feedInTariff | Active | BGN 0.21181/kWh (~€0.108) for <5 kWp. BGN 0.20397/kWh for 5-30 kWp. Guaranteed 20 years. Among the most generous residential FITs in EU. |
| Net metering | netMetering | Active | Net metering available for residential self-consumption systems. Can choose between net metering and FIT. |
Reference Model Results
Using our calculator with a 5 kWp system, 8,500 kWh annual demand, no battery:
| Metric | Value |
|---|---|
| Annual generation | 6,500 kWh |
| Self-consumption | 44.6% (2,896 kWh) |
| Export | 55.4% (3,583 kWh) |
| Self-consumed value | €348/year |
| Export value | €387/year |
| Gross annual saving | €735/year |
| Simple payback | 6.3 years |
| NPV (6%, 25 yr) | €3164 |
| Verdict | Excellent investment |
NPV: Net Present Value. Adds up 25 years of savings, discounted at 6%, and compares to keeping the money in the bank. Positive = solar beats the bank. Negative = you'd be better off investing elsewhere.
Battery Economics
No TOU tariff and high feed-in rate (€0.108) means batteries save almost nothing. Payback 20+ years. Don't buy a battery in Bulgaria.
Country-Specific Considerations
Bulgaria has the BEST solar economics in the EU. Excellent solar yield (~1,300 kWh/kWp), low system costs, and a generous 20-year guaranteed feed-in tariff (€0.108/kWh) that nearly matches the retail price (€0.12/kWh). Net metering is also available. This is the easiest solar decision in Europe.
Grid Connection
- Typical connection: singlePhase25A
- Single-phase max: 5 kWp
- Export limit per phase: 5 kW
- Metering type: netTotal
- Net metering: Your generation offsets consumption across all phases (favorable)
- Net metering policy: net metering
Red Flags for Bulgaria Installers
- Pushes battery as 'essential' (reviewed 2026-05 — Installer claim monitoring)
- Doesn't mention 20-year guaranteed FIT (reviewed 2026-05 — Installer claim monitoring)
- Quotes prices in EUR without noting BGN is pegged 1.96:1 (reviewed 2026-05 — Installer claim monitoring)
- Ignores that FIT is nearly equal to retail price (reviewed 2026-05 — Installer claim monitoring)
When Solar Makes Sense in Bulgaria
- ✅ You have high electricity bills (above average for your country)
- ✅ You're home during the day (retired, work from home)
- ✅ You have an EV and charge at home
- ✅ You can get available subsidies
- ✅ You value energy independence
Why Bulgaria Has the Best Solar Economics in Europe
Bulgaria's solar economics are exceptional due to a rare combination of factors:
- High solar yield — ~1,300 kWh/kWp, among the best in Europe
- Low system costs — ~€850/kWp installed, cheaper than Western Europe
- Generous FIT — €0.108/kWh guaranteed for 20 years, nearly matching retail (€0.12/kWh)
- Net metering available — choose FIT or net metering, whichever works better for your consumption pattern
The math: A 5 kWp system costs ~€4,250, generates ~6,500 kWh/year, and earns ~€700/year. Payback: 5.9 years.
Currency note: Bulgaria uses the Lev (BGN), fixed at 1.96 BGN = 1 EUR via currency board. All prices above are in EUR for comparison.
Verdict Summary
| Strategy | Payback | Notes |
|---|---|---|
| 5 kWp solar only | 6.3 years | Excellent investment |
| With battery | Add 4–8 years | Marginal — calculate carefully |
| With subsidies | Subtract 1–3 years | Check current programs |
| With EV charging | Subtract 1–2 years | Increases self-consumption |
Bulgaria has the BEST solar economics in the EU. Excellent solar yield (~1,300 kWh/kWp), low system costs, and a generous 20-year guaranteed feed-in tariff (€0.108/kWh) that nearly matches the retail price (€0.12/kWh). Net metering is also available. This is the easiest solar decision in Europe.
Data as of: 2026-05. Prices and subsidies change — verify with local sources before making decisions.