Plug Power, Inc.
PLUG Industrials Electrical Equipment & Parts
Plug Power, Inc.’s revenue for fiscal 2025 (year ended December 2025) was $709.9 million, up 12.9% from fiscal 2024. In the quarter to June 2026, revenue grew 2.49%, EPS grew 30.0%, free cash flow grew 56.9% and total debt rose 52.6%, each against the same quarter a year earlier. Insiders bought in the last twelve months.
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Plug Power, Inc. (PLUG) Altman Z-score
Plug Power, Inc.'s Altman Z-score for fiscal 2025 is −4.81, in the distress zone (below 1.81).
Altman Z-score, annual
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Annual newest first
| Period | Altman Z-score | Change (points) |
|---|---|---|
| FY2025 | −4.81 | (1.37) |
| FY2024 | −3.44 | (2.44) |
| FY2023 | −1.00 | (3.06) |
| FY2022 | 2.06 | (5.07) |
| FY2021 | 7.12 | (0.71) |
| FY2020 | 7.83 | 9.41 |
| FY2019 | −1.58 | 2.69 |
| FY2018 | −4.27 | 1.12 |
| FY2017 | −5.39 | 0.03 |
| FY2016 | −5.42 | (1.48) |
How fiscal 2025’s score is made up
| Component | This year | Year before | Result | Points |
|---|---|---|---|---|
| Working capital / total assets | 0.31 | — | 0.37 | |
| Retained earnings / total assets | (3.17) | — | −4.44 | |
| EBIT / total assets | (0.57) | — | −1.87 | |
| Market value of equity / total liabilities | 1.42 | — | 0.85 | |
| Sales / total assets | 0.27 | — | 0.27 | |
| Altman Z-score | Distress zone | −4.81 | ||
| Z″ Variant for non-manufacturing and asset-light companies (drops the sales/assets term, uses book equity) | Distress zone | −11.45 | ||
How the Altman Z-score works
Z = 1.2 × working capital ÷ total assets + 1.4 × retained earnings ÷ total assets + 3.3 × EBIT ÷ total assets + 0.6 × market value of equity ÷ total liabilities + 1.0 × revenue ÷ total assets (Altman, 1968). The market value of equity is the close on the last trading day of the fiscal year times weighted basic shares.
Z″ = 6.56 × working capital ÷ total assets + 3.26 × retained earnings ÷ total assets + 6.72 × EBIT ÷ total assets + 1.05 × book equity ÷ total liabilities (Altman, Hartzell and Peck, 1995), the variant for non-manufacturing and asset-light companies.
| Zone | Z | Z″ |
|---|---|---|
| Safe zone | above 2.99 | above 2.60 |
| Grey zone | 1.81–2.99 | 1.10–2.60 |
| Distress zone | below 1.81 | below 1.10 |
Not worked out for banks, insurers and REITs, whose balance sheets the model does not describe, nor when a figure is missing or there is no share price in the week to the fiscal year end.
Altman Z-score against peers
| Company | Altman Z-score |
|---|---|
| AMPX Amprius Technologies, Inc. compare | 9.5× |
| PLPC Preformed Line Products Company compare | 6.4× |
| ATKR Atkore Inc. compare | 2.8× |
| HAYW Hayward Holdings, Inc. compare | 2.5× |
| ENR Energizer Holdings, Inc. compare | 1.5× |
| TE T1 Energy Inc compare | −0.3× |
| FCEL FuelCell Energy, Inc. compare | −2.2× |
| EOSE Eos Energy Enterprises, Inc. compare | −3.5× |
| PLUG Plug Power, Inc. | −4.8× |
What Altman Z-score is
The Altman Z-Score weighs working capital, retained earnings, operating profit, market value and sales against assets and debts to gauge the risk of distress.
1.2 × working capital ÷ total assets + 1.4 × retained earnings ÷ total assets + 3.3 × EBIT ÷ total assets + 0.6 × market value of equity ÷ total liabilities + 1.0 × revenue ÷ total assets