Grid integration
Reactive capability at the POI, plant controller strategy, and ride-through performance that matches what was committed in the interconnection study.
Review this service area →Solar and storage design preparedfor AHJ and utility review.
Collection system, protection, and grid integration design for utility-scale solar and battery storage — with applicable NFPA 855 requirements and UL 9540A test-data considerations addressed early.
Service scope
Solar PV and Battery Energy Storage Design Services
Collection system, protection, and grid integration design for utility-scale solar and battery storage — with applicable NFPA 855 requirements and UL 9540A test-data considerations addressed early.
Code compliance
Applicable NFPA 855 requirements, hazard mitigation, gas detection, ventilation, and suppression interfaces are addressed with the relevant authority during design.
Review this service area →
Collection system economics
Conductor sizing, feeder layout, and loss optimisation.
Review this service area →Why eGridSync
Design for fire, utility, and layout at the same time
The best BESS design resolves spacing, suppression, and grid integration before the layout is frozen.
How our engineers work →Grid integration
Reactive capability at the POI, plant controller strategy, and ride-through performance that matches what was committed in the interconnection study.
Code compliance
Applicable NFPA 855 requirements, hazard mitigation, gas detection, ventilation, and suppression interfaces are addressed with the relevant authority during design.
Collection system economics
Conductor sizing, feeder layout, and loss optimisation.
Software capabilities behind better engineering decisions.
Trusted analysis and design platforms, applied by engineers who understand the system behind the model.
DIgSILENTPower system analysis
ETAPElectrical analysis
EasyPowerArc flash & coordination
SKM PowerToolsPower tools analysis
CYMEDistribution analysis
PSS/ETransmission planning
PSCADEMT simulation
AutoCADDrafting & design
Bentley MicroStationInfrastructure design
SELRelay protection
Our process
From project inputs to decision-ready output.
Collection system, protection, and grid integration design for utility-scale solar and battery storage — with applicable NFPA 855 requirements and UL 9540A test-data considerations addressed early.
Basis of design and authority engagement
The applicable code edition, authority expectations, and UL 9540A test-data considerations for the selected product.
Hazard mitigation analysis
Where required, prepared by a PE with BESS experience.
Collection and protection design
Feeder layout, conductor sizing, grounding, protection scheme, and coordination.
Grid integration design
Plant controller, reactive strategy, and verification against the interconnection commitments.
Construction and commissioning support
Submittal review, field changes, and functional testing.
bess design FAQ
Questions before the work begins.
01What changed in the 2026 edition of NFPA 855?
The most consequential change is the emphasis on large-scale fire testing. New Annex G.11 addresses fire spreading from one BESS unit to another.
02What is UL 9540A, and is it the same as UL 9540?
No. UL 9540 is a product listing. UL 9540A is a test method that evaluates thermal runaway fire propagation.
03How early do we need to engage the relevant authority?
Early coordination helps align spacing, suppression, gas detection, site layout, collection design, and interconnection interfaces.
04Do you handle the hazard mitigation analysis?
The scope and responsible party for hazard mitigation analysis are confirmed for the specific project.
05Can you design for both solar and storage on one interconnection?
Yes, and co-located solar-plus-storage is now the common case rather than the exception.
06What conductor and equipment data do you need to start?
Site plan and survey, selected inverter and BESS product datasheets, point-of-interconnection information, available study commitments, soil resistivity data, and the applicable project jurisdiction.