ClearSign Technologies Corporation (CLIR) Revenue History
Annual and quarterly revenue from 2013 to 2024
Compound Annual Growth Rate (CAGR)
Loading revenue history...
CLIR Revenue Growth
Revenue Breakdown (FY 2018)
CLIR's revenue distribution by segment and geography for fiscal year 2018
By Product/Segment
CLIR Revenue Analysis (2013–2024)
As of May 8, 2026, ClearSign Technologies Corporation (CLIR) generated trailing twelve-month (TTM) revenue of $2.2 million, reflecting significant decline in growth of -44.6% year-over-year. The most recent quarter (Q3 2025) recorded $1.0 million in revenue, up 673.7% sequentially.
Looking at the longer-term picture, CLIR's historical revenue data shows a 3-year CAGR of +80.9%. The company achieved its highest annual revenue of $3.6 million in 2024, representing a new all-time high.
Revenue diversification analysis shows CLIR's business is primarily driven by Once Through Steam Generator (75%), and Small Project (25%). With over half of revenue concentrated in Once Through Steam Generator, the company maintains significant focus in this area while developing other growth vectors.
When compared to Industrials sector peers including FTEK (-0.7% YoY), PESI (-0.9% YoY), and CECO (+33.5% YoY), CLIR has underperformed the peer group in terms of revenue growth. Compare CLIR vs FTEK →
CLIR Revenue vs Peers
Revenue metrics vs comparable public companies
| Company | TTM Revenue | YoY Growth | 5Y CAGR | Op. Margin | Compare |
|---|---|---|---|---|---|
| CLIRCurrent | $2M | -44.6% | - | -180.4% | |
 FTEK | $27M | -0.7% | +3.4% | -13.8% | |
 PESI | $62M | -0.9% | -10.2% | -19.0% | |
 CECO | $774M | +33.5% | +19.6% | 6.7% | |
 ENVX | $32M | +15.6% | - | -557.0% | |
 CLNE | $425M | +5.5% | +7.8% | -22.1% |
CLIR Historical Revenue Data (2013–2024)
| Year | Revenue | YoY % | Gross Profit | Gross Margin | Op. Income | Op. Margin |
|---|---|---|---|---|---|---|
| 2024 | $3.6M | +49.6% | $1.1M | 31.1% | $-6,488,000 | -180.4% |
| 2023 | $2.4M | +542.5% | $817K | 34.0% | $-5,981,000 | -248.9% |
| 2022 | $374K | -38.4% | $-30,000 | -8.0% | $-6,117,000 | -1635.6% |
| 2021 | $607K | - | $-452,000 | -74.5% | $-8,145,000 | -1341.8% |
| 2020 | $0 | - | $-279,000 | - | $-6,932,000 | - |
| 2019 | $0 | -100.0% | $-1,000 | - | $-8,583,000 | - |
| 2018 | $530K | -1.9% | $103K | 19.4% | $-9,571,000 | -1805.8% |
| 2017 | $540K | -13.0% | $160K | 29.6% | $-9,712,000 | -1798.5% |
| 2016 | $621K | +918.0% | $136K | 21.9% | $-11,205,000 | -1804.3% |
| 2015 | $61K | - | $11K | 18.0% | $-7,942,000 | -13019.7% |
See CLIR's True Return
Price is only half the story. See total return with reinvested dividends.
Launch CalculatorIs CLIR Undervalued?
DCF intrinsic value, peer multiples, and analyst estimates — see what the stock is really worth.
View ValuationCompare CLIR vs SPIR
Side-by-side business, growth, and profitability comparison vs Spire Global, Inc..
Start ComparisonCLIR — Frequently Asked Questions
Quick answers to the most common questions about buying CLIR stock.
Is CLIR's revenue growth accelerating or slowing?
CLIR revenue declined -44.6% year-over-year, contrasting with the 5-year CAGR of N/A. TTM revenue fell to $2M. This reverses the prior growth trend.
What is CLIR's long-term revenue growth rate?
ClearSign Technologies Corporation's 5-year revenue CAGR of N/A reflects the variable expansion pattern. Current YoY growth of -44.6% is below this long-term average.
How is CLIR's revenue distributed by segment?
CLIR reports revenue by product line and geographic region. Annual and quarterly breakdowns from 2013-2024 are available for download. Segment mix reveals concentration and diversification trends.