Clean Energy Fuels (Nasdaq: CLNE) is expected to report Q1 earnings on May 8. Here's what Wall Street wants to see:

The 10-second takeaway
 Comparing the upcoming quarter to the prior-year quarter, average analyst estimates predict Clean Energy Fuels's revenues will expand 41.5% and EPS will remain in the red.

The average estimate for revenue is $104.2 million. On the bottom line, the average EPS estimate is -$0.05.

Revenue details
 Last quarter, Clean Energy Fuels reported revenue of $99.1 million. GAAP reported sales were 15% higher than the prior-year quarter's $86.2 million.

Source: S&P Capital IQ. Quarterly periods. Dollar amounts in millions. Non-GAAP figures may vary to maintain comparability with estimates.

EPS details
 Last quarter, non-GAAP EPS came in at -$0.23. GAAP EPS were -$0.46 for Q4 versus -$0.30 per share for the prior-year quarter.

Source: S&P Capital IQ. Quarterly periods. Non-GAAP figures may vary to maintain comparability with estimates.

Recent performance
 For the preceding quarter, gross margin was 21.2%, 160 basis points worse than the prior-year quarter. Operating margin was -21.3%, 320 basis points worse than the prior-year quarter. Net margin was -42.1%, much worse than the prior-year quarter.

Looking ahead

The full year's average estimate for revenue is $404.0 million. The average EPS estimate is -$0.54.

Investor sentiment
 The stock has a five-star rating (out of five) at Motley Fool CAPS, with 1,764 members out of 1,813 rating the stock outperform, and 49 members rating it underperform. Among 283 CAPS All-Star picks (recommendations by the highest-ranked CAPS members), 276 give Clean Energy Fuels a green thumbs-up, and seven give it a red thumbs-down.

Of Wall Street recommendations tracked by S&P Capital IQ, the average opinion on Clean Energy Fuels is outperform, with an average price target of $16.00.

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