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🇱🇹 Solar Calculator Lithuania

Enter your monthly electricity bill and city — get solar system size, CPA (Cumulative Power Account) virtual net metering savings, APVA grant estimate, self-consumption savings, and payback period in Euro (€).

Your electricity details
€EUR
Solar system results — Lithuania
5 kWp system — 847 kWh/kWp/yr
Monthly kWh usage556 kWh/mo
Annual solar production4 234 kWh/yr
Self-consumption savings (€0.18/kWh)€267/yr
Export income (market price)€138/yr
Total annual benefit€404/yr
System cost range€5 500 – €7 500
APVA grant (est.)-€1 500
Net cost after APVA grant€5 000
Payback period (after grant)12.4 years
25-year net savings€3 609
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How to Use This Calculator

Enter your monthly bill and city

Enter your average monthly electricity bill in Euro (€) from your Lithuanian supplier — Ignitis (the dominant state-owned retailer), Enefit, or another licensed retailer. The calculator uses Lithuania's average household retail rate of €0.18/kWh. Select your city to apply accurate peak sun hours: Lithuania spans 54–56°N latitude, making it one of Europe's northernmost solar markets. Vilnius, Kaunas, Šiauliai, and Panevėžys average 2.9 PSH; Klaipėda on the Baltic coast receives slightly less at 2.8 PSH due to maritime cloud cover. Despite the latitude, Lithuania's relatively high retail electricity prices make solar economically viable.

Choose your system size

Select system size in kWp. Typical Lithuanian residential system: 5–8kWp. Summer cottages (sodų namai) often install 3kWp for seasonal use. The APVA grant applies to residential systems up to 10kWp. Lithuania's CPA (Cumulative Power Account) scheme is available for residential prosumers with systems up to 30kW — among the most generous virtual net metering limits in the Baltic states. Installation costs of €1,100–1,500/kWp are competitive for the Baltic region.

CPA (Cumulative Power Account) toggle

Lithuania's Cumulative Power Account (Kaupiamoji galia — KG) is a virtual net metering mechanism that banks exported solar electricity as credits at the full retail rate (€0.18/kWh), which can be drawn down during low-production periods (winter). Without CPA, surplus is sold at the much lower market price (~€0.05/kWh). CPA is available to residential prosumers with systems up to 30kW. Activate through ESO (Energijos Skirstymo Operatorius, eso.lt) with a prosumer agreement and VKEKK (National Energy Regulatory Council) registration. Lithuania's APVA (Environmental Projects Management Agency) offers grants for residential solar installations — the calculator includes an estimate of €300/kWp up to €3,000 maximum.

The Formula

Monthly kWh = Monthly Bill ÷ €0.18/kWh (LT avg retail rate) Annual production = kWp × PSH × 365 × 0.80 efficiency Self-consumption = Annual kWh × 35% (northern climate, no battery) Self-consumption savings = Self-consumed kWh × €0.18/kWh retail CPA export credit = Exported kWh × €0.18/kWh (retail banking) Market export = Exported kWh × €0.05/kWh (without CPA) APVA grant = min(kWp × €300, €3,000) for ≤10kWp residential System cost = kWp × €1,100–1,500/kWp installed Payback = Net cost after grant ÷ Annual benefit (typically 8–10yr)

Lithuania's solar framework is governed by the Law on Energy from Renewable Sources (Atsinaujinančių išteklių energetikos įstatymas) and regulated by VKEKK (Valstybinė kainų ir energetikos kontrolės komisija — National Energy Regulatory Council). The Cumulative Power Account scheme was introduced to support Baltic solar prosumers under EU Directive 2019/944. APVA (Aplinkos projektų valdymo agentūra) administers EU-funded grants for household renewable energy installations — check apva.lt for currently open calls. Lithuania's National Energy Independence Strategy targets 70% renewable electricity by 2030, with solar expected to play a key role in the residential sector.

Example

Linas — Vilnius home, 5kWp with CPA and APVA grant

Linas pays €100/month for his Vilnius home. He applies for the APVA grant, installs a 5kWp system, and activates the CPA scheme through ESO.

Monthly bill€100
City / PSHVilnius, 2.9 PSH
System size5 kWp
CPAEnabled

Result

Annual production~4,234 kWh/yr
Production per kWp~847 kWh/kWp/yr
Self-consumption savings~€272/yr
CPA export credit~€496/yr
Total annual benefit~€768/yr
System cost range€5,500–7,500
APVA grant (est.)-€1,500
Net cost after grant~€5,000
Payback~6.5 years
25-year net savings~€12,700

Vilnius's 2.9 PSH gives approximately 847 kWh/kWp/yr — lower than southern Europe but still viable. The CPA scheme is critical here: without it, exported electricity earns only €0.05/kWh (market), reducing annual benefit to ~€295/yr and payback to over 20 years. With CPA at full retail rate, the economics transform — demonstrating why virtual net metering makes northern solar viable.

FAQ

Yes — though Lithuania (54–56°N) faces the challenge of low winter solar production, the combination of CPA virtual net metering, APVA grants, and rising retail electricity prices (€0.18/kWh) makes residential solar financially viable. The CPA scheme is the key: it banks summer solar credits at retail rate to offset winter bills. With CPA enabled, payback of 7–10 years is achievable. Without CPA, economics are significantly worse. Lithuania's 2030 renewable target of 70% renewable electricity also supports further policy improvements.
The Cumulative Power Account (Kaupiamoji galia — KG) is Lithuania's virtual net metering scheme for residential prosumers with systems up to 30kW. When your solar panels produce more electricity than you consume, the surplus is credited to your CPA at the full retail rate (€0.18/kWh). These credits can then be drawn down during winter months or low-production periods to offset your electricity bills — effectively treating the grid as a giant seasonal battery. Activate CPA through ESO (eso.lt) by signing a prosumer agreement and registering with VKEKK. The scheme is particularly valuable in Lithuania's climate due to the strong summer/winter solar production imbalance.
APVA (Aplinkos projektų valdymo agentūra — Environmental Projects Management Agency) administers EU-funded grants for household renewable energy installations in Lithuania. Grant amounts vary by call — typically €200–400/kWp for residential solar up to 10kWp, with maximum grants of €2,000–4,000 per household. Applications must be submitted before purchasing equipment. Check apva.lt for currently open calls and eligibility criteria. APVA grants are funded through EU Structural Funds and the Recovery and Resilience Facility (RRF). The process typically takes 2–4 months from application to approval.
Lithuania's solar production is highly seasonal due to its northern latitude (54–56°N). In December and January, production can drop to just 5–10% of summer peak — a 5kWp system might produce only 40–60 kWh/month in midwinter versus 700–800 kWh/month in June/July. This seasonal imbalance is precisely why the CPA scheme is so valuable: it lets you bank summer surplus at retail rate for use in winter. Without CPA, Lithuanian solar economics are significantly challenged. For year-round self-sufficiency, a large battery or the CPA scheme is essential.
All major Lithuanian cities have very similar solar resources at 2.8–2.9 PSH due to the country's small geographic area and similar climate. Vilnius, Kaunas, Šiauliai, and Panevėžys all average 2.9 PSH. Klaipėda on the Baltic Sea coast receives slightly less (2.8 PSH) due to maritime cloud cover and sea mist, but the difference is minor. Unlike countries with large north-south or coast-to-inland variation, Lithuania's solar potential is relatively uniform — location choice matters less than system design and the CPA enrollment decision.

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