Key Takeaways BE's ROE of 6.8% far exceeds PLUG's ROE of -90.22%.BE stock has returned 694.4% in the last year compared with Plug Power's rally of 32.5%.BE TIE ratio is 1.4 compared with PLUG's TIE ratio of -36.1.The companies operating in the Zacks Alternate Energy- Other industry are becoming increasingly important as nations strive to reduce reliance on fossil fuels and lower emissions from electricity generation. Among the various clean technologies, fuel-cell systems are steadily emerging as a promisin ...