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Commercial energy storage systemPylontech

Pylontech Optim US-B2-M1C-A-ex/xxx-US-03

132.4–198.7 kWh · 66.2–99.3 kW · Lithium Iron Phosphate · 8 configurations

UL 9540CEC listed · Apr 13, 2026
  • Nameplate energy132.4–198.7 kWh
  • Continuous power66.2–99.3 kW
  • ChemistryLithium Iron Phosphate

Overview

CEC Energy Storage System List

Optim US-B2-M1C-A-ex/xxx-US-03: 132.4–198.7 kWh nameplate energy; 66.2–99.3 kW continuous; lithium iron phosphate.

Models & configurations

CEC Energy Storage System List · 8 listings
ModelEnergyPowerGrid voltageRound tripCEC listed
Optim US-B2-M1C-A-ex/132-US-03132.4 kWh66.22 kW——Apr 13, 2026
Optim US-B2-M1C-A-ex/142-US-03141.9 kWh70.95 kW——Apr 13, 2026
Optim US-B2-M1C-A-ex/151-US-03151.4 kWh75.68 kW——Apr 13, 2026
Optim US-B2-M1C-A-ex/161-US-03160.8 kWh80.41 kW——Apr 13, 2026
Optim US-B2-M1C-A-ex/170-US-03170.3 kWh85.14 kW——Apr 13, 2026
Optim US-B2-M1C-A-ex/180-US-03179.7 kWh89.87 kW——Apr 13, 2026
Optim US-B2-M1C-A-ex/189-US-03189.2 kWh94.6 kW——Apr 13, 2026
Optim US-B2-M1C-A-ex/198-US-03198.7 kWh99.33 kW——Apr 13, 2026

Capacity & power

CEC Energy Storage System List

Safety listings

CEC Energy Storage System List
UL 9540 certifies the whole storage system; UL 9540A is the fire-propagation test that fire codes ask for indoors and near walls.

California grid & code compliance

CEC Energy Storage System List

Questions & answers

How much energy does the Pylontech Optim US-B2-M1C-A-ex/xxx-US-03 store?

132.4–198.7 kWh nameplate, per the California Energy Commission list.

Is the Optim US-B2-M1C-A-ex/xxx-US-03 UL 9540 certified?

Yes — the CEC list shows UL 9540 certification (certified by tuv rheinland).

Sources

  1. California Energy Commission — Energy Storage System List, data as of Oct 7, 2026. Manufacturer-reported values confirmed by CEC against certificates.