ESS Tech

ESS Tech FCF Margin

The Free Cash Flow Margin of ESS Tech (GWH) as of Nov 4, 2026 is -3,390.46 %. In the previous year, Free Cash Flow Margin was -1,263.11 % — a change of 168.42% (lower).

FCF Margin

-3,390.46 %

YoY

168.42%

Last updated:

Free Cash Flow Margin of ESS Tech is 2025 -3,390.46 % . Free Cash Flow Margin of ESS Tech was 2024 -1,263.11 % . It decreases by 168.42% lower compared to the previous year.

The ESS Tech FCF Margin history

  • 3 Years

  • 10 Years

  • 25 Years

  • Max

FCF Margin
Date
FCF Margin
Jan 1, 2021
-7,961.52 USD
Jan 1, 2022
-10,715.88 USD
Jan 1, 2023
-804.85 USD
Jan 1, 2024
-1,263.11 USD
Jan 1, 2025
-3,390.46 USD
The ESS Tech FCF Margin history
YEARFCF MarginYoY
-3,390.46 %+168.42%
-1,263.11 %+56.94%
-804.85 %-92.49%
-10,715.88 %+34.60%
-7,961.52 %—

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ESS Tech Stock analysis

What does ESS Tech do? ESS Tech, Inc. generates revenue through the sale of its iron flow battery products, specifically the Energy Warehouse and Energy Center. The Energy Warehouse provides storage from 50 kW to 90 kW with four to 12-hour durations, deployed in shipping container units for easy installation. The Energy Center offers customizable configurations tailored to customer power, energy, and duration requirements. Grid operators and commercial and industrial customers purchase these systems for grid flexibility and energy assurance, leveraging the non-flammable and non-toxic nature of the batteries. The company focuses on long-duration energy storage using earth-abundant materials, targeting applications where lithium-ion batteries are less favorable. Its products address energy delivery, duration, and cycle-life in a single platform, appealing to customers seeking reliable, sustainable energy solutions. The firm's manufacturing and R&D phase supports the development of these specialized battery systems for commercial and energy storage markets. ESS Tech, Inc. serves commercial and industrial customers and grid operators who require flexible energy storage solutions. The company's iron flow battery technology differentiates itself by offering a safe, durable alternative to lithium-ion batteries, with products designed for both standard and custom deployments. Sales are driven by the need for sustainable, long-duration storage that meets specific operational demands in energy-intensive sectors. ESS Tech is one of the most popular companies on Eulerpool.

Frequently Asked Questions about ESS Tech stock

Free Cash Flow Margin of ESS Tech is -3,390.46 % in 2025.

Free Cash Flow Margin of ESS Tech changed from -1,263.11 % to -3,390.46 %, representing a 168.42% change. The value is lower than the previous year.

On Eulerpool you can find the complete historical development of Free Cash Flow Margin ESS Tech since 2006 – with annual values, charts, and detailed analysis.

FCF Margin measures the percentage of revenue converted to free cash flow. It indicates how efficiently a company generates cash from its operations.

A 'good' varies by industry and company stage. On Eulerpool, you can compare Free Cash Flow Margin's ESS Tech with sector peers and the industry average to assess whether it is attractive.

To evaluate Free Cash Flow Margin's, it is essential to compare it with peers in the same industry and sector. On Eulerpool, you can find direct industry comparisons for Free Cash Flow Margin.

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Margins — ESS Tech

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