What happened Shares of FuelCell Energy (NASDAQ: FCEL) fell by as much as 14.3% in trading on Thursday after the company reported its fiscal second-quarter 2021 financial results. Shares floundered from the start of trading and were down 10.3% at 2:45 p.m. EDT. So what For the period that ended April 30, FuelCell Energy's quarterly revenue fell 26% to $14.0 million and its net loss grew by 28% to $18.9 million, or $0.06 per share. Even adjusted EBITDA got worse, as its loss of $3.3 million a year ago grew to a loss of $11.3 million. Image source: Getty Images. Analysts were expecting a loss of $0.05 per share on revenue of $19.2 million, so this was a big miss. Management explained away the drop in revenue as primarily the result of a decline in new module exchanges. Now what Falling revenues aren't a good look for a company that operates in what is supposed to be a growing segment of the renewable energy market. But more concerning is that FuelCell Energy's backlog dropped by $20 million, or more than revenue, to $1.32 billion. Business isn't coming in as quickly as investors should be hoping for. As such, this $3.2 billion market cap alternative energy company looks like a highly risky investment. 10 stocks we like better than FuelCell EnergyWhen investing geniuses David and Tom Gardner have a stock tip, it can pay to listen. After all, the newsletter they have run for over a decade, Motley Fool Stock Advisor, has tripled the market.* David and Tom just revealed what they believe are the ten best stocks for investors to buy right now... and FuelCell Energy wasn't one of them! That's right -- they think these 10 stocks are even better buys. See the 10 stocks *Stock Advisor returns as of June 7, 2021 Travis Hoium has no position in any of the stocks mentioned. The Motley Fool has no position in any of the stocks mentioned. The Motley Fool has a disclosure policy.Source