Solar Hydrogen Challenge: Difference between revisions
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*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. | *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. [https://chatgpt.com/share/69532e9b-d73c-8010-b3f1-dfb737507341] | *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. [https://chatgpt.com/share/69532e9b-d73c-8010-b3f1-dfb737507341] | ||
* | **Separator is only 10% capex. [https://chatgpt.com/share/69532e9b-d73c-8010-b3f1-dfb737507341] | ||
**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. | |||
=Hydrogen Booster Sourcing= | =Hydrogen Booster Sourcing= | ||
Revision as of 02:00, 30 December 2025
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.