What is the sentiment of this news? Please choose an answer from {strong negative/moderately negative/mildly negative/neutral/mildly positive/moderately positive/strong positive}.
Text: Plug Power Inc (NASDAQ: PLUG) is in the green this morning after Amazon.com (NASDAQ: AMZN) Inc struck a deal with the clean energy company to further its sustainability goals. Amazon wants to switch to green hydrogen Amazon wants to power its transportation and building operations with green hydrogen.
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