Solar Hydrogen Challenge
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Alkaline Electrolyzer Sourcing
- 1kg/hr system takes a 60kW PV system for the magical 60kWhr/kg yield. But - separating membrane there can be $5-10k. Costs $40k.
- This system produces 60 tons over lifetime - or $120k worth of hydrogen - or ROI=3x.
- Make your own plates - nickel coating mild steel - 50 lb nickel for 1 kg/hr - and 200 lb salts. Cost several hundred dollars for 1 kg/hr.
- For 10kg/hr - cost is about $150k capex, so if this gives 60k hours or 600k kg (600 tons) - return is $1.2M at $150k capex, closer to 10x ROI. [1]
- Separator is only 10% capex. [2]
- If we go open source, we can lower cost so separator is 50% capex. Capex would then be $30k in the zero marginal cost scenario.