SunnyGrid80 Solar-Storage Plant
An 80 MW photovoltaic plant with a 40 MW / 80 MWh battery energy-storage system and its grid substation, modelled in ELANG as an audited reference to UL 9540A and IEC 62443 — a system-of-systems where the interfaces carry as much of the design as the boxes.


What this class is held to
The recipe for this system class encodes its standards as tracked obligations, so the design is proven against them rather than tested against them at the end.
- UL 9540A
- IEC 62443
- ISO/IEC/IEEE 15288
A system of systems, held together by its interfaces
PV, storage and substation are three systems that only work as one, and the risk lives in the interfaces between them — electrical, thermal, data and control. The SunnyGrid80 model is the reference for interface-heavy design: every connection typed and traced, fire-safety and cyber assurance carried as first-class obligations rather than appendices.
Baseline lifecycle with electronics and cyber standards
Model a grid-scale solar-plus-storage plant whose interfaces, fire-safety case and cyber-assurance obligations are all traced and checkable.
- 01Frame the plant's mission and grid-connection requirements
- 02Decompose into PV, BESS and substation systems with typed interfaces
- 03Carry fire-safety (UL 9540A) and cyber assurance (IEC 62443) as tracked obligations
- 04Allocate requirements across the sub-systems and their interfaces
- 05Close verification and reach production-ready conformance
ELANG reference model
CDR — Critical Design Review
The design baseline and its supply have to be real before build.
- Geometry, BOM and software baseline are released
- Every part has a qualified source and a lead time
- Every interface is controlled by an interface-control item
- Open risks are within tolerance
Change any released item and everything downstream of it goes stale — the baseline cannot silently drift out from under a passed gate.
On the canvas


Bring a grid-scale energy system you actually build.
We will frame the need, derive the requirements, stand up the ELANG model and walk a review gate with you on the call.