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🇱🇻 Solar Calculator Latvia

Enter your monthly electricity bill and city — get solar system size, ALTUM grant up to 50%, Latvenergo net metering credits, and payback period for Latvian homes and businesses.

Your electricity details
€EUR
Solar system results — Latvia
5 kWp system — 847 kWh/kWp/yr
Monthly kWh usage500 kWh/mo
Annual solar production4234 kWh/yr
Self-consumption savings€381/yr
Latvenergo net metering credit€466/yr
Total annual benefit€847/yr
System cost (before grant)€5500 – €7500
Net cost after grant€6500
Payback period7.7 years
25-year net savings€14 670
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How to Use This Calculator

Enter your monthly bill and city

Enter your average monthly electricity bill in Euro from Latvenergo or your chosen supplier. The calculator uses Latvia's approximate retail electricity rate of €0.20/kWh. Select your city — Daugavpils (3.0 PSH) receives slightly more solar irradiance than other Latvian cities due to its inland location. Latvia's solar resources are moderate, similar to northern Germany or southern Scandinavia, with long summer days partially compensating for the high northern latitude (56–58°N).

Choose system size and ALTUM grant

Select your system size in kWp. Typical Latvian residential installations range from 3–10kWp; commercial systems are often 15–50kWp. If you are applying or have applied for an ALTUM Development Finance Institution grant, toggle the ALTUM option — this applies an estimated 50% grant reduction to your net system cost. ALTUM grant availability varies by programme cycle; always verify current terms at altum.lv before relying on grant amounts.

Latvenergo net metering

Latvia operates a net metering scheme through Latvenergo and licensed suppliers. Surplus electricity not consumed is credited back to your account at the retail rate. This makes exporting excess solar production significantly more valuable than in countries with lower feed-in tariffs. The net metering credit is calculated at €0.20/kWh for exported electricity.

The Formula

Monthly kWh = Monthly Bill ÷ €0.20/kWh (LV retail rate) Annual production = kWp × PSH × 365 × 0.80 efficiency Self-consumption = Annual kWh × 45% Self-consumption savings = Self-consumed kWh × €0.20/kWh retail Net metering credit = Exported kWh × €0.20/kWh retail ALTUM grant = 50% of system midpoint cost (if eligible) System cost = kWp × €1,100–1,500/kWp (installed) Payback = Net cost after grant ÷ Annual benefit (typically 8–10 years)

Latvia's solar framework is governed by the Electricity Market Law (Elektroenerģijas tirgus likums) and Cabinet Regulation No. 221. Net metering is administered by the system operator Latvijas elektriskie tīkli (LET). The ALTUM Development Finance Institution administers EU-co-funded grant programmes for energy efficiency and renewables — programme availability depends on EU funding cycles. Latvia benefits from EU climate targets requiring 45% renewable energy by 2030, creating policy tailwinds for residential solar adoption.

Example

Jānis — Riga family home, 5kWp with ALTUM grant

Jānis pays €100/month for his family home in Riga. He applies for an ALTUM grant and installs a 5kWp system.

Monthly bill€100
City / PSHRiga, 2.9 PSH
System size5 kWp
ALTUM grantYes (50%)

Result

Annual production~4,234 kWh/yr
Production per kWp~847 kWh/kWp/yr
Self-consumption savings~€380/yr
Net metering credit~€465/yr
Total annual benefit~€845/yr
System cost (before grant)~€5,500–7,500
ALTUM grant (50%)~−€3,250
Net cost after grant~€3,250
Payback~3.8 years (with grant)
25-year net savings~€18,000

Latvia's 2.9 PSH is sufficient for viable solar economics, especially with the ALTUM grant. The net metering scheme at retail rate makes exported electricity significantly more valuable. Without a grant, payback extends to approximately 8–10 years — still within industry-standard ranges.

FAQ

Yes — Latvia's moderate solar resource (2.9–3.0 PSH) is comparable to northern Germany, where millions of solar systems operate profitably. Latvia's retail electricity prices (~€0.20/kWh) are in the mid-range for the EU. Without grants, payback periods of 8–10 years are typical. With the ALTUM grant (up to 50%), payback can fall to 4–5 years. Latvia's long summer days partially compensate for the northern latitude — a 5kWp system in Riga produces around 4,200 kWh annually.
ALTUM (Attīstības finanšu institūcija ALTUM) is Latvia's development finance institution, co-funded by EU structural funds. It administers grants for residential energy efficiency and renewable energy installations, including solar PV. Grants of up to 50% of eligible costs are available for residential customers under specific programme cycles. Programme availability depends on EU funding allocation — not all programmes run continuously. Check altum.lv for current open programmes, eligibility criteria, and application deadlines. Apply before signing a contract with an installer.
Latvia's net metering (neto uzskaite) scheme allows solar system owners to export surplus electricity to the grid and receive credit at the retail tariff rate. Credits can offset future electricity bills. The scheme is available through Latvenergo and other licensed electricity suppliers. To access net metering, your system must be registered with the distribution system operator (Sadales tīkls) and comply with connection standards. Excess credits that cannot be offset within a year may be paid out at a lower rate — check your supplier's specific terms.
For residential solar systems in Latvia: systems up to 11kWp generally require notification to the local municipality rather than a full building permit, though exact requirements vary by municipality and heritage zone. Grid-connection applications are submitted to Sadales tīkls (the distribution system operator). Your solar installer typically handles the connection application. Installations in protected buildings or conservation areas may require additional approvals from the State Inspection for Heritage Protection (VKPAI). Always confirm requirements with your local municipality and installer.
Daugavpils (3.0 PSH) receives slightly more solar irradiance due to its inland location and continental climate patterns. Riga, Liepāja, Jelgava, and Jūrmala all receive 2.9 PSH — effectively the same for calculation purposes. Coastal areas around Liepāja sometimes experience more cloud cover from the Baltic Sea. The difference between the sunniest and least sunny Latvian locations is small (~3%), so system sizing matters more than location selection within Latvia.

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