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

ESS Tech's Free Cash Flow history runs 7 years deep, the most recent figure standing at -$14.4 million for Q1 2026.

• In Q1 2026, Free Cash Flow rose 35.91% year-over-year to -$14.4 million; the TTM figure through Mar 2026 stood at -$42.2 million (up 44.75% YoY), while the FY2025 annual figure was -$50.3 million, up 31.81% from the prior year.
• Free Cash Flow for Q1 2026 stood at -$14.4 million, down from -$12.8 million in the prior quarter.
• The five-year high for Free Cash Flow was -$2.6 million in Q3 2025, with the low at -$28.0 million in Q4 2022.
• The 5-year median for Free Cash Flow is -$18.9 million (2024), against an average of -$17.1 million.
• The sharpest annual moves came in 2024 and 2025: Free Cash Flow tumbled 320.08% in 2024, then jumped 86.09% in 2025.
• ESS Tech's Free Cash Flow stood at -$28.0 million in 2022, then jumped by 54.85% to -$12.6 million in 2023, then sank by 52.04% to -$19.2 million in 2024, then jumped by 33.27% to -$12.8 million in 2025, then declined by 12.52% to -$14.4 million in 2026.
• Business Quant data shows GWH's Free Cash Flow at -$14.4 million in Q1 2026, -$12.8 million in Q4 2025, and -$2.6 million in Q3 2025.