Polestar HYDRA Review
The toolkit for those who review electrolyser performance for a living.
The questions it answers
What HYDRA Review tells you.
- Are these OEM quotes comparable, once normalised to the same basis?
- How sensitive is the business case to the degradation assumption?
- Does the guarantee test result hold once corrected to contract conditions?
- What does degradation do to LCOH across the project life?
What you provide
- OEM datasheets and quotes
- The project business case and its assumptions
- Acceptance-test results and guarantee terms, where relevant
What you receive
- Specification normalisation across OEM quotes
- Degradation-assumption stress tests
- Guarantee-test correction
- Degradation-adjusted LCOH
- All on one engine, with the method written out
Synthetic example; no real supplier data.
How advisers use it.
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01
Normalise
Put every quote on the same basis: LHV or HHV, stack or system, AC or DC.
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02
Stress-test
Run the business case across credible degradation scenarios.
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03
Document
Keep the method and the inputs with every figure you report.
Methodology notes
Definitions, normalisation, uncertainty.
Every calculation in Review is the same one published in our engineering tools, with its method, assumptions and references written out.
Review supports an independent engineer's own judgement. It does not replace it.
What it includes
- Electrochemical engine calibrated against NREL benchmark data
- Correction of acceptance tests to guarantee conditions
- KPIs complementary to DNV-RP-J302 performance tests
- Specification normalisation across OEM quotes
- Report text drafting (language model, from computed results only)
Questions.
Can we use the public tools today?
Yes. The engineering tools on this site run the same calculations, free, with their methods published.
Is Review a substitute for an independent engineer?
No. It is a toolkit for the people who do that work.
Start with an assessment.
Send us an export. Our team returns verified KPIs, degradation rates and a clear view of where your voltage goes.