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Energy Recovery vs Sono TEK: ERII and SOTK compared
Energy Recovery is the larger company: $11.2M of revenue in its latest quarter (Q3 2026) against $5.2M for Sono TEK (Q2 FY27). Sono TEK is growing faster (+1% against -65% a year earlier). Sono TEK is more profitable, with an operating margin of 7.3% against -87.5%.
Where the money goes: ERII and SOTK
Energy Recovery (ERII) · Q3 2026
Energy Recovery, Q3 2026: revenue $11.2M (-65% year over year), operating margin -87.5%, net loss $6.3M, operating cash flow −$9.2M. The chart follows the revenue to costs, profit and cash.
Sono TEK (SOTK) · Q2 FY27
Sono TEK, Q2 FY27: revenue $5.2M (+1% year over year), operating margin 7.3%, net earnings $366K, operating cash flow $1.2M. The chart follows the revenue to costs, profit and cash.
| Energy Recovery (ERII) | Sono TEK (SOTK) | |
|---|---|---|
| Latest quarter | Q3 2026 | Q2 FY27 |
| Revenue | $11.2M | $5.2M |
| Revenue growth, Y/Y | -65% | +1% |
| Gross margin | — | 52.9% |
| Operating margin | -87.5% | 7.3% |
| Net earnings | −$6.3M | $366K |
| Net margin | -56.5% | 7.0% |
| Operating cash flow | −$9.2M | $1.2M |
| Free cash flow | — | $1.1M |
Where the revenue comes from
Energy Recovery
- Desalination: $10.7M (96%)
- Wastewater: $476K (4%)
Sono TEK
- Multi-Axis Coating Systems: $2.0M (38%)
- In-Line Coating Systems: $1.8M (34%)
- Spare Parts, Services and Other: $810K (15%)
- OEM Systems: $642K (12%)
Questions
Which is bigger, Energy Recovery or Sono TEK?
Energy Recovery is the larger company: $11.2M of revenue in its latest quarter (Q3 2026) against $5.2M for Sono TEK (Q2 FY27).
Is Energy Recovery or Sono TEK growing faster?
Sono TEK is growing faster (+1% against -65% a year earlier).
Which is more profitable, Energy Recovery or Sono TEK?
Sono TEK is more profitable, with an operating margin of 7.3% against -87.5%.
More: Energy Recovery earnings · how Energy Recovery makes money · Sono TEK earnings · how Sono TEK makes money
From the companies' latest 10-Q, 10-K or earnings release (10-Q filed Nov 4, 2026; 10-Q filed Oct 14, 2026). Fiscal quarters can end on different dates. Not investment advice.