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We use the safest,
Smart energy management system supports multiple applications.
Lowest Energy Cost
Competitively priced, easy
to install, and high round-trip
10 year warranty up to
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Why Choose Fortress Power Products?
Solar Industry in 2019 & 2020!
Powering increased revenue and expanding solutions for these innovative companies.
and households energy storage products they can depend
on, built from only the highest quality, highest powered
lithium ferrite phosphate batteries.
Latest Blog Posts
Off-Grid Living: What Is It and What Are the Benefits?
From cost savings to environmental impact, a closer look at why it makes sense to go off the grid Off-grid living has a number of
Fortress Power Introduces eSpire Mini for Large Residential and Light Commercial Use
New System Ideal for Large Residential or Light Commercial Use LANGHORNE, PA. (March 3, 2023) – Fortress Power proudly introduces their latest C&I offering, the
How Microgrids Are Helping Communities Achieve Energy Goals
Microgrids Offer Resilience, Energy Conservation, and Off-Grid Capabilities An answer to the question “what is a microgrid?” can be simple or involved. Keeping it simple,
UL9540 Second Edition: Fortress Batteries, Sol-Ark Inverter Meet New Requirements
Battery/Inverter Pairing Meets UL9540 Second Edition Requirements in the Most Stringent Jurisdictions LANGHORNE, PA. (December 8, 2022) – Fortress Power is proud to announce that