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ESS Tech Inc (GWH)



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Upturn Advisory Summary
09/17/2025: GWH (1-star) is currently NOT-A-BUY. Pass it for now.
1 Year Target Price $1.82
1 Year Target Price $1.82
0 | Strong Buy |
0 | Buy |
3 | Hold |
0 | Sell |
0 | Strong Sell |
Analysis of Past Performance
Type Stock | Historic Profit -73.33% | Avg. Invested days 25 | Today’s Advisory PASS |
Upturn Star Rating ![]() ![]() | Upturn Advisory Performance ![]() | Stock Returns Performance ![]() |
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Key Highlights
Company Size Small-Cap Stock | Market Capitalization 22.62M USD | Price to earnings Ratio - | 1Y Target Price 1.82 |
Price to earnings Ratio - | 1Y Target Price 1.82 | ||
Volume (30-day avg) 3 | Beta 1.22 | 52 Weeks Range 0.76 - 10.12 | Updated Date 09/17/2025 |
52 Weeks Range 0.76 - 10.12 | Updated Date 09/17/2025 | ||
Dividends yield (FY) - | Basic EPS (TTM) -6.26 |
Analyzing Revenue: Products, Geography and Growth
Revenue by Products
Product revenue - Year on Year
Revenue by Geography
Earnings Date
Report Date - | When - | Estimate - | Actual - |
Profitability
Profit Margin - | Operating Margin (TTM) -490.12% |
Management Effectiveness
Return on Assets (TTM) -63.75% | Return on Equity (TTM) -207.48% |
Valuation
Trailing PE - | Forward PE - | Enterprise Value 22692167 | Price to Sales(TTM) 3.67 |
Enterprise Value 22692167 | Price to Sales(TTM) 3.67 | ||
Enterprise Value to Revenue 3.68 | Enterprise Value to EBITDA -0.15 | Shares Outstanding 14314700 | Shares Floating 9160846 |
Shares Outstanding 14314700 | Shares Floating 9160846 | ||
Percent Insiders 31.78 | Percent Institutions 13.49 |
Upturn AI SWOT
ESS Tech Inc

Company Overview
History and Background
ESS Tech Inc. (formerly ACON S2 Acquisition Corp.) was founded in 2011. The company went public through a SPAC merger in October 2021. It focuses on developing and deploying long-duration energy storage systems using iron flow battery technology.
Core Business Areas
- Energy Storage Systems: ESS designs, manufactures, and deploys iron flow batteries for commercial and industrial, and utility-scale applications. These batteries provide long-duration energy storage, typically 4-12 hours.
Leadership and Structure
Craig Evans is the CEO. The organizational structure is based on functional departments such as Engineering, Manufacturing, Sales, and Marketing.
Top Products and Market Share
Key Offerings
- Energy Warehouse (EW): Containerized iron flow battery system for commercial and industrial applications. Market share data is difficult to pin down precisely due to the nascent stage of long-duration energy storage, but ESS is considered a leader. Competitors include Form Energy and Energy Vault.
- Revenue: No specific information about this product revenue is available.
- Energy Center (EC): Larger, utility-scale iron flow battery system. Like EW, market share data is emerging. Competitors include Form Energy and Vanadium redox flow batteries (VRFB) manufacturers.
- Revenue: No specific information about this product revenue is available.
Market Dynamics
Industry Overview
The energy storage industry is rapidly growing due to the increasing adoption of renewable energy sources. Long-duration energy storage is becoming increasingly important for grid stabilization and reliability.
Positioning
ESS positions itself as a provider of safe, environmentally friendly, and cost-effective long-duration energy storage solutions. Its iron flow battery technology is marketed as a superior alternative to lithium-ion batteries for long-duration applications.
Total Addressable Market (TAM)
The total addressable market for long-duration energy storage is estimated to be in the billions of dollars. ESS is positioned to capture a share of this market with its iron flow battery technology.
Upturn SWOT Analysis
Strengths
- Iron flow battery technology (safe, long duration, recyclable)
- Environmentally friendly materials
- Scalable manufacturing
- Experienced management team
Weaknesses
- Relatively new company
- Limited track record
- High initial costs
- Limited brand recognition
Opportunities
- Growing demand for long-duration energy storage
- Government incentives for renewable energy and energy storage
- Partnerships with utilities and other energy companies
- Expansion into new markets
Threats
- Competition from other energy storage technologies
- Fluctuations in raw material prices
- Changes in government regulations
- Technological obsolescence
Competitors and Market Share
Key Competitors
- FMC
- SLDP
- ALB
Competitive Landscape
ESS has a strong competitive advantage in long-duration storage and non-lithium batteries. ESS needs to demonstrate its technology's reliability and cost-effectiveness to win market share.
Growth Trajectory and Initiatives
Historical Growth: Historical growth is limited as it has recently become publically traded.
Future Projections: Analyst estimates vary, but the consensus is that ESS will experience significant revenue growth as it scales up its manufacturing and sales efforts.
Recent Initiatives: Recent initiatives include expanding its manufacturing capacity and securing partnerships with utilities.
Summary
ESS Tech Inc is focused on the growing long-duration energy storage market. Its iron flow battery technology is its core strength. However, the company faces challenges related to its limited track record and competition. Successful execution of its growth plans and effective cost management are crucial for long-term success.
Peer Comparison
Sources and Disclaimers
Data Sources:
- ESS Tech Inc. Investor Relations
- SEC Filings
- Industry Reports
- Analyst Reports
Disclaimers:
This analysis is based on available information and is not financial advice. Investment decisions should be based on individual risk tolerance and due diligence.
AI Summarization is directionally correct and might not be accurate.
Summarized information shown could be a few years old and not current.
Fundamental Rating based on AI could be based on old data.
AI-generated summaries may have inaccuracies (hallucinations). Please verify the information before taking action.
About ESS Tech Inc
Exchange NYSE | Headquaters Wilsonville, OR, United States | ||
IPO Launch date 2021-01-04 | Interim CEO & Corporate Secretary Ms. Kelly F. Goodman J.D. | ||
Sector Industrials | Industry Electrical Equipment & Parts | Full time employees 240 | Website https://essinc.com |
Full time employees 240 | Website https://essinc.com |
ESS Tech, Inc., an energy storage company, designs and produces iron flow batteries for commercial and utility-scale energy storage applications worldwide. It offers energy storage products, which include Energy Warehouse, a behind-the-meter solution; Energy Center, which is designed to allow customers to connect multiple units in various configurations and supporting energy storage projects ranging from sub-megawatt to tens-of-megawatt scale; and Energy Base, a gigawatt-scale storage product. The company was founded in 2011 and is headquartered in Wilsonville, Oregon.

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