Latvian Solar Energy and Battery Storage Growth Surges in 2026

Latvia’s distribution grid delivered 722.4 gigawatt-hours of electricity from solar power plants during the first nine months of 2026, marking a twenty percent increase compared to the same period last year, according to data published by AS Sadales tīkls.

Solar Output Growth and Expanding Plant Scale

The expansion of solar infrastructure across Latvia continues to accelerate through the third quarter of 2026. Data from AS Sadales tīkls shows that production peaked during the second quarter, driven by a particularly sunny June that yielded 125.82 gigawatt-hours into the grid—a seventy percent surge over June 2025 output figures.

Individual facility sizes are growing alongside total generation volume. By the end of September 2026, approximately 1,790 solar installations were connected to the distribution network, boasting a cumulative capacity of roughly 1,080 megawatts. Network operators added 348 new stations during the first nine months of the year, averaging 1.06 megawatts per station. That scale represents a tenfold increase over the average capacity of stations connected in 2022.

Battery Storage Integration Across the Grid

Battery energy storage systems are rapidly pairing with solar generation assets to manage supply fluctuations. Out of the total solar stations tied to the distribution network, 315 facilities—accounting for eighteen percent—now operate alongside battery storage units with a combined capacity of approximately 270 megawatts.

Microgeneration setups show a parallel trend. During the first three quarters of 2026, the distribution network absorbed 1,930 solar and battery hybrid installations totalling nearly 41.8 megawatts of capacity. Standalone battery units unconnected to solar arrays also expanded. Last year saw the addition of twelve standalone battery systems with 10.3 megawatt capacity. By the end of September 2026, operators brought another seventeen units online, adding 54 megawatts.

These standalone systems draw power from the grid during low-price hours and discharge electricity when wholesale prices rise or the grid requires supplementary capacity. Sadales tīkls records indicate that standalone batteries injected approximately 21.3 gigawatt-hours back into the distribution network over the nine-month window, though total national battery activity remains broader than distribution-level metrics alone capture.

Renewables Comprise Most Electricity Delivered in September

The AST market review for September 2026 illustrates shifting seasonal dynamics across renewable technologies. Latvian solar plants fed 140.1 gigawatt-hours into the grid during September—falling thirty-seven percent from August due to diminishing daylight, yet climbing sixty-seven percent above September 2025 levels.

Counterbalancing the drop in solar output, hydroelectric generation rose to 148.6 gigawatt-hours, while wind farms generated a monthly record of 50.7 gigawatt-hours. Renewable sources collectively comprised 94.42 percent of all electricity delivered to the grid in September. Total domestic generation covered 62.39 percent of national electricity consumption for the month. Consumption reached 615.6 gigawatt-hours against 384.1 gigawatt-hours of domestic production, leaving a transmission grid import deficit of 231.5 gigawatt-hours.

Higher consumption paired with lower solar output pushed Latvia’s average electricity price up to 108.68 euros per megawatt-hour in September. That figure represents a thirty-six percent increase from August and a twenty-nine percent rise compared to September 2025. Unlike the summer months, when high solar output drove hourly spot prices down to zero or below, September registered no negative pricing intervals.

Battery Storage Capacity Grows Toward 2036 Projections

Battery systems monitored by AST delivered 9.24 gigawatt-hours to the grid in September, an eighteen percent increase over August. This metric incorporates utility-scale battery installations in Rēzekne and Tume, integrated into the national balance sheet since December 1, 2025.

Looking toward the next decade, Sadales tīkls projects that total connected generation and storage capacity across the distribution network could reach 2.8 gigawatts by 2036. Cumulative storage connection capacity currently exceeds 350 megawatts, with roughly 150 megawatts actively operational and technical specifications issued for an additional 900 megawatts.

These forward-looking projections depend on actual capital deployment as electrification accelerates across transport, district heating, data centers, and storage infrastructure. Whether battery integration and flexible demand management can fully mitigate seasonal price volatility as renewable penetration deepens remains the central question for market participants heading into the winter heating season.