Thailand-based development company CNX Construction built the world’s first off-grid solar powered hydrogen storage multi-house complex. The solar-powered hydrogen storage system provides 24-hour, year-round access to clean energy, even during periods of bad weather. The company has not released cost figures for the project, but said, “We have calculated a return on our investment (ROI) based on 5 to 6 Thai Baht/kilowatt hour. The time for a ROI will be around 15 years as of today.”

“Due to its widening acceptance, the cost of similar systems will drop within the next 3 to 5 years and will generate a much faster ROI,” the release added.

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Photo credit: cnxconstruction.com