ESS Tech (GWH-WT) Free Cash Flow (2020 - 2026)

ESS Tech's Free Cash Flow history runs 7 years deep, the most recent figure standing at -$13.5 million for Q1 2026.

• In Q1 2026, Free Cash Flow rose 29.06% year-over-year to -$13.5 million; the TTM figure through Mar 2026 stood at -$44.8 million (up 38.94% YoY), while the FY2025 annual figure was -$50.3 million, up 31.81% from the prior year.
• Free Cash Flow was -$13.5 million for Q1 2026 at ESS Tech, down from -$11.6 million in the prior quarter.
• In the past five years, Free Cash Flow ranged from a high of -$3.9 million in Q3 2025 to a low of -$24.6 million in Q4 2022.
• Historically, Free Cash Flow has averaged -$16.2 million across 5 years, with a median of -$18.2 million in 2024.
• The sharpest annual moves came in 2023 and 2024: Free Cash Flow jumped 80.66% in 2023, then slumped 341.85% in 2024.
• A 5-year view of Free Cash Flow shows it stood at -$24.6 million in 2022, then surged by 48.7% to -$12.6 million in 2023, then plunged by 44.3% to -$18.2 million in 2024, then surged by 36.43% to -$11.6 million in 2025, then dropped by 16.24% to -$13.5 million in 2026.
• The last three Free Cash Flow figures came in at -$13.5 million (Q1 2026), -$11.6 million (Q4 2025), and -$3.9 million (Q3 2025), per Business Quant data.