Interest Income and Financial Discipline
Company earned $1.4M of interest income for 2025 (Q4 interest income $288k) from invested cash and investments, helping liquidity and partially offsetting operating losses.
Improved Consolidated Revenue and Strong Q4 Growth
Full year 2025 consolidated revenue rose 6% to $26.7M (in line with guidance). Fourth quarter consolidated revenue increased 37% year-over-year to $7.2M (from $5.3M), reflecting growth across APC and FUEL CHEM segments.
FUEL CHEM Segment Surge
Full year FUEL CHEM revenue increased 28% to $17.8M, exceeding guidance. Q4 FUEL CHEM revenue rose 37% to $4.9M (from $3.5M). Management highlighted strong performance from legacy units and a six-month commercial demonstration that could annualize to ~$2.5M–$3.0M if converted.
Margin Expansion
Consolidated gross margin improved to 46% for 2025 from 42% in 2024. Q4 consolidated gross margin rose to 45% from 42% YoY. APC Q4 gross margin expanded to 42% from 36% and FUEL CHEM Q4 gross margin increased to 46% from 45%.
Strong Balance Sheet and Cash Generation
Year-end cash, cash equivalents, and investments totaled $31.9M (nearly $32M) with no debt. Net cash provided by operating activities was $3.0M in 2025 (versus a use of $2.8M prior year). Cash per share was $1.03 and working capital was $25.7M ($0.83 per share).
APC Backlog Growth and Strategic Acquisition
APC consolidated backlog increased to $7.0M at year-end 2025 from $6.2M at year-end 2024 (≈12.9% increase). Management completed a small strategic acquisition of Walco IP/assets, enhancing technology portfolio and driving inquiry momentum.
Large Data Center Pipeline Opportunity
Management reports participation with >10 data center integrators/OEMs. Project sizes range from 2–5 units up to 30–40 NOx reduction units with pricing per unit predominantly $1.0M–$2.5M. Pollution-control scope values were described as up to ~$75M–$100M per project (noting the pollution-control portion is a small fraction of total AI infrastructure spend). Earliest expected award conversions: Q2 2026 for some opportunities.
DGI Commercial Progress
Dissolved Gas Infusion demonstrations are delivering positive results: fish hatchery demo on track to conclude in Q2 2026; municipal wastewater trial converted to a six-month rental (rental revenue ~$10k/month). Management expects a first commercial DGI contract in 2026.