Fortress Power eSpire 233kWh Commercial & Industrial Battery Storage
The Fortress Power eSpire 233kWh is a fully integrated, pre-configured energy storage solution designed specifically for the Commercial and Industrial (C&I) market. Built with premium Tier 1 Lithium Iron Phosphate (LFP) chemistry, this massive 233kWh battery bank provides exceptional thermal stability and reliability for high-demand applications.
This turnkey system reduces on-site installation time by packaging the battery racks, advanced liquid cooling, fire suppression, isolation transformer, and multi-level Battery Management System (BMS) into a single, outdoor-rated enclosure.
Why Choose the Fortress Power eSpire 233kWh
Commercial solar and storage projects often suffer from long installation times and complex component matching. The eSpire 233 solves this by offering a complete, pre-configured package. When paired with the Fortress Power 125kW PCS, it creates a seamless 480V 3-phase microgrid. The advanced liquid cooling system optimizes thermal performance by up to three times compared to standard air cooling, extending the battery lifespan and maximizing your long-term investment.
Benefits of the Fortress Power eSpire 233kWh
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Demand Charge Management: Discharging stored energy during peak utility hours allows large facilities to “peak shave,” significantly lowering expensive demand charges on commercial electricity bills.
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Turnkey Installation: The system arrives with the HVAC, fire suppression, and battery trays already integrated, drastically reducing the labor required by your EPC or installer.
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Massive Scalability: As your facility’s energy needs grow, you can parallel up to 15 eSpire units together. This creates a colossal 3.5 MWh energy storage network capable of powering heavy industrial equipment.
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Resilient Backup Power: Operates seamlessly in standalone, off-grid mode to protect your business operations, data centers, or agricultural facilities from unexpected grid failures.
Frequently Asked Questions
Q1: What inverter is this battery designed to work with? The eSpire 233 is perfectly matched with the Fortress Power Delta 125kW PCS. Pairing the 233kWh battery with the 125kW inverter creates a balanced ratio for providing robust, continuous 3-phase 480V AC power to commercial loads.
Q2: Can this battery be installed outside? Yes. The entire eSpire 233 unit is housed in a rugged, outdoor-rated enclosure. The integrated HVAC and liquid cooling systems ensure the internal batteries remain at their optimal operating temperature regardless of exterior weather conditions.
Q3: How heavy is the unit? The complete enclosure weighs approximately 5,533 lbs (2,510 kg). Commercial rigging equipment, such as a crane or heavy-duty forklift, will be required to place the unit onto its concrete equipment pad.
Q4: Is the fire suppression system included? Yes. To meet strict commercial building codes and UL9540A safety standards, the eSpire 233 comes fully equipped with a built-in, active fire suppression system out of the box.
Q5: Can I expand the system later? Absolutely. The modular design of the eSpire series allows you to connect up to 15 units in parallel. This scalability lets you easily expand your facility’s energy storage capacity up to 3.5 MWh in the future.
If you have any questions about the item or your order, please feel free to message before purchasing. Thank you!


