A continuous score, its drivers, and the evidence underneath it — never just a grade on its own. Hash-verifiable, reproducible, scope-stamped and expert-reviewable.
Degradation trajectory exceeds the model baseline from day 24. Primary driver is DC fast-charge frequency, not calendar age.
The rating is decision-support, not a bindable guarantee of loss or acceptance. The formula is proprietary.
Every model is stress-tested against a synthetic falsifiability substrate before it goes near a production grade. Reef can replay the same seeded world while changing only one controlled variable — so you can see that only the changed asset moved.
See a replay at reef.neurflow.fi →We took a seeded BESS world — eight racks, seed 42 — and raised the charge C-rate on a single unit (reef-bess-003) from 0.5 to 2, an aggressive fast-charge duty. Everything else was held identical, then re-run on the same seed. Only the perturbed rack moved.
The €Δ scales an illustrative €280k reference capex by reef’s synthetic RV curve — a relative model delta, not a market price(DR-236). The moat is the isolation, not the number: same seed, one variable, only the victim moves — a but-for you can’t reconstruct on real telemetry, because you can’t re-run the world.
The engine that produces the rating is separate from the substrate that stress-tests it.
The replay substrate can't see the composite formula it's probing.
Reef € figures are model deltas vs a synthetic reference — never quoted market prices.
A rating is decision-support and reproducible evidence — not legally proven causation.
Every surface below is public and honestly labelled — synthetic where the data is synthetic, sandbox where the engine runs on fixtures, live where it’s real. No customer data is exposed.
A full A–F asset rating, walked end to end on synthetic inputs.
Open →An instant readiness grade from public data — no login.
Open →One scoring engine across asset classes, on sandbox data.
Open →A reef-synthetic disaster reconstruction — every graph banner-labelled.
Open →A composition view — one live building, the rest sandbox.
Open →Open a sample rating and walk the evidence package end to end, or go straight to the trust page and see what’s live, proven and still ahead.