The largest batteries on earth, tracked asset by asset — capacity, cycling intensity and modelled health trajectory. Select any asset to see its profile.
A selection of the tracked fleet. Select an asset for its profile and modelled trajectory.
| Asset | Market | Capacity | Online | EFC/yr* | Modelled SoH* | Status |
|---|
How to read this table. Capacity, ownership, technology and commissioning dates are compiled from verified public information about each project. The columns marked * — equivalent full cycles and modelled state of health — are modelled estimates produced for this public view, built from typical duty cycles for each market and configuration. They are not measurements of these assets and are not telemetry from their operators. Asset-specific analysis using real operating data is the service. See methodology →
Published field evidence shows how much this varies: the same measurement approach finds batteries in Texas losing roughly 7% of capacity per 365 equivalent full cycles, while the British fleet loses about 4.4%. A 1.6× difference between markets — invisible unless someone measures it.
The Observatory builds that comparison across every major market: each asset scored against peers of the same chemistry, duration, climate and duty cycle. Subscribers see their exact position in the ranking — privately, with their own operating data.
Benchmark my asset| Fleet / study | Observed degradation |
|---|---|
| ERCOT fleet (Modo Energy, 2025) | ≈7% per 365 EFC |
| Great Britain fleet (Modo Energy, 2024) | ≈4.4% per 365 EFC |
| Utility BESS, Italy — 3 years (Energies, 2026) | ≈1.4% per year |
| Grid-scale LFP, literature (first decade) | 2–3% per year |
| Peak shaving vs frequency regulation | ≈1.8× more degradation |
| BESS failure incident rate 2018→2025 (EPRI) | −99% |
Sources: Modo Energy (ERCOT 2025, GB 2024) · Energies 2026, 19(4):984 · Energy-Storage.News (May 2026) · EPRI BESS Failure Incident Database. Detail in Methodology.
With your operating and BMS data, the forecast moves from a modelled estimate to a decision-grade instrument: measured health, remaining life with bands, augmentation timing and guarantee tracking.
Start tracking my asset