ZEPHYRA
SOLUTION 01
Generation Assets
Rooftop, ground-mount and hybrid arrays: every string metered at the inverter and reconciled against irradiance in real time.
AT A GLANCE 01
2.6 GW
Solar capacity under continuous, string-level measurement.
AT A GLANCE 02
±0.4%
Reconciliation tolerance between metered output and modelled irradiance.
AT A GLANCE 03
15 min
From reading to sealed ledger entry, for every inverter, every interval.
How it works
Built for the asset it watches
4.9
The measurement stack wasn’t just a dashboard — it was a scientifically grounded system built for our asset class.
Ingrid Halvorsen
COO, Norvind Energi
What we measure
Zephyra instruments sit at the inverter, not at the export meter. Every string is read at 15-minute resolution alongside plane-of-array irradiance, module temperature and soiling, so what the site produced can always be separated from what the site could have produced.
Each reading is timestamped, signed and committed to the ledger the moment it is taken. Nothing is averaged, back-filled or estimated after the fact.
How it works
Field units are calibrated to the asset class they watch — crystalline, thin-film or bifacial — and re-verified against a reference cell on a fixed schedule. Readings travel over an encrypted link to the ledger, where they are reconciled against the site’s performance model and any variance is flagged within the same interval.
Operators, offtakers and lenders read from the same record, so a performance question is settled by looking, not by negotiating.
What you get
A bankable, instrument-level record of output that survives audit, refinancing and ownership change. Performance ratios that update every interval. And a curtailment and availability history that can be traced back to a single string on a single afternoon.
Capabilities
What comes with it
01
String-level metering
Every string read at the inverter at 15-minute resolution, with module temperature and soiling alongside.
02
Irradiance reconciliation
Metered output checked against plane-of-array irradiance so under-performance is caught in the same interval.
03
Sealed readings
Each interval is signed and committed to the ledger the moment it is taken. Nothing is averaged after the fact.
04
Lender-ready reporting
Performance ratio, availability and curtailment histories in the format financing partners already accept.
Proof in the field
See it working
Norvind cuts curtailment 31%
A 640 MW onshore fleet across northern Norway was losing output to curtailment nobody could attribute. Nacelle-level measurement made every lost megawatt-hour traceable to a turbine and an hour.
Asset
Delivered
Ingrid Halvorsen
COO, Norvind Energi
Helia Solar goes bankable
Helia's 1.2 GW solar portfolio needed performance evidence its lenders would accept without a third-party audit. String-level measurement, reconciled against irradiance, gave them a record that speaks for itself.
Asset
Delivered
Mateo Ferrán
Head of Asset Performance, Helia
Meridian Grid verifies at scale
A regional grid operator with 380 interconnection points was reconciling energy flows quarterly, by hand. Metering every hand-over to a single ledger brought settlement close to live and ended the arguments.
Asset
Delivered
Priya Raman
Director of Regulatory Affairs, Meridian Grid
Nordsee Delta proves 2.1 TWh
Three lenders, one offshore wind farm and no agreed production figure. Nacelle-level evidence committed to a shared ledger let Nordsee Delta prove 2.1 TWh of output to all of them at once.
Asset
Delivered
Marit Boeckmann
Head of Asset Management, Nordsee Delta
Aurora settles dispatch disputes
An offtaker and an operator disagreed about round-trip losses at a 480 MWh battery for eight months. Instrument-level dispatch data replayed from the ledger settled it in an afternoon.
Asset
Delivered
Tomas Ek
Director of Trading, Aurora Storage
Cascade Hydro becomes auditable
Ninety years of paper records and no way to prove any of it. Measuring every release at the gate turned a century-old hydro plant into an asset a regulator, and a lender, could audit.
Asset
Delivered
Priya Raghunathan
Compliance Lead, Cascade Hydro