Ballard Power Systems (Nasdaq: BLDP) is expected to report Q2 earnings around July 31. 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 Ballard Power Systems's revenues will expand 43.6% and EPS will remain in the red.

The average estimate for revenue is $14.8 million. On the bottom line, the average EPS estimate is -$0.06.

Revenue details
 Last quarter, Ballard Power Systems reported revenue of $12.3 million. GAAP reported sales were 22% higher than the prior-year quarter's $10.1 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 -$0.07. GAAP EPS were -$0.09 for Q1 compared to -$0.10 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 23.8%, 280 basis points better than the prior-year quarter. Operating margin was -56.6%, much better than the prior-year quarter. Net margin was -64.7%, much better than the prior-year quarter.

Looking ahead

The full year's average estimate for revenue is $63.7 million. The average EPS estimate is -$0.24.

Investor sentiment
 The stock has a two-star rating (out of five) at Motley Fool CAPS, with 252 members out of 358 rating the stock outperform, and 106 members rating it underperform. Among 72 CAPS All-Star picks (recommendations by the highest-ranked CAPS members), 31 give Ballard Power Systems a green thumbs-up, and 41 give it a red thumbs-down.

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