Lithuania Energy Storage Report: 2-hour Batteries Commissioned in 2026 Will Have An IRR Of 13-16%

 

Lithuania Energy Storage Report: 2-hour batteries commissioned in 2026 will have an IRR of 13-16%, expected to fall to 6-13% in 2029.

 

For investors, timing is crucial in entering the Baltic region's energy storage market. According to a recent report by Aurora Energy Research, battery storage projects in Estonia, Latvia, and Lithuania face a narrowing profit window, with project returns highly dependent on the timing of commissioning. Early entrants can capitalize on the significant price differential between the high prices in the manual frequency recovery reserve capacity market and the day-ahead intraday market.

 

For a typical independent energy storage project in Lithuania, a 2-hour storage system commissioned in 2026 is expected to achieve an internal rate of return of 13% to 16%, with a payback period of just 4 to 5 years. This performance even outperforms 4-hour systems, which achieved an internal rate of return of 11% to 15% over the same period, with a payback period of 5 to 6 years. The advantage of 2-hour systems stems from their lower initial investment cost and their quarter-hour granularity, which is more suitable for capturing value in the intraday market.

 

However, this first-mover advantage will quickly fade. With the continued deployment of flexible capacity in the Baltic region, the price gap between manual frequency restoration reserve capacity and energy market prices is expected to narrow significantly by 2029. For similar two-hour systems, if commissioning is delayed until 2029, the internal rate of return will fall to 6% to 13%, with a payback period extending to 7 to 10 years. For four-hour systems, the rate of return will fall to 5% to 12%. In an environment of intensified competition, energy arbitrage between the day-ahead and intraday markets will become a core source of revenue, requiring projects to maintain economic viability through precise optimization and multi-market portfolio strategies.

 

Notably, this study does not include analysis of the automatic frequency restoration reserve market. Although the European unified platform PICASSO was fully launched in March 2025, the Baltic Transmission Operator was not fully integrated until April, indicating that the market still lacks depth and maturity.