Engineering Services
Multi-discipline detailed engineering — electrical, civil and structural — from FEED through issued-for-construction, delivered as packages site teams can build from.
Complete, buildable engineering across every discipline
DD Powertech produces the full engineering package behind substations, renewable plants, battery storage sites and industrial facilities — from the first key single-line diagram to the last cable schedule and foundation drawing.
Electrical, civil and structural design are developed together and coordinated in 3D, so what is approved on paper fits on site. Every package is issued with the calculations that justify it.
End-to-end, coordinated engineering
Design decisions are tightly linked — fault level sets switchgear ratings, ratings fix room sizes, rooms decide cable routes. We keep that chain inside one team.
One integrated team
Electrical, civil and structural engineers work from a single design basis, so interfaces are resolved in the office rather than on site.
FEED to IFC workflow
A staged process — concept, basic, detailed, IFC — with design reviews at each gate and a clear record of every change.
Standards-led sizing
Every equipment rating is calculated and traceable to IEC, IEEE, IS and CEA requirements, and to the applicable grid code.
Every part of our engineering services
Substation design (AIS / GIS)
Complete AIS and GIS substation design up to 400 kV — layouts, sections, clearances, equipment sizing and construction drawings.
Explore this serviceDetailed electrical design
Key and detailed SLDs, protection and control schematics, metering, interlocking logic and panel wiring diagrams.
Explore this serviceCollector system & interconnection
MV collector networks, inverter and turbine interconnection, and the HV link to the grid for solar, wind and hybrid plants.
Explore this serviceBESS electrical design
PCS and MV skid integration, auxiliary supplies, protection and grid interconnection for battery energy storage.
Explore this serviceEarthing & lightning protection
IEEE 80 earthing grids, touch and step safety, and IEC 62305 lightning protection — designed and verified.
Explore this serviceCable sizing & routing
Sizing for ampacity, voltage drop and short-circuit withstand, cable schedules, and tray, trench and duct routing.
Explore this serviceProtection & control
Protection philosophy, relay panel design, control and interlocking, and IEC 61850 substation automation architecture.
Explore this serviceCivil & structural design
Equipment foundations, gantries, cable trenches and control buildings coordinated with the electrical layout.
Explore this serviceBIM & 3D coordination
3D substation and plant models that check clearances and remove clashes between disciplines before construction.
Explore this serviceMEP & building services
Lighting, small power, LV distribution and low-current systems for control rooms, plant buildings and facilities.
Explore this serviceHVAC engineering
Heat-load calculations and ventilation and air-conditioning design for switchgear rooms, battery rooms and control buildings.
Explore this serviceNeed a different scope?
Tell us what your project needs — we will put together the right engineering team and package.
What you receive at each design stage
FEED / Concept
Design basis, key SLD, preliminary layouts, equipment list and budgetary BOQ for approvals and tendering.
Basic engineering
Sizing calculations, equipment specifications, data sheets and layouts frozen for procurement.
Detailed engineering
Schematics, cable and interconnection schedules, earthing and LPS, civil interfaces and vendor document review.
IFC & as-built
Issued-for-construction drawings, site query support and as-built updates after commissioning.
Designed to recognised standards
Common questions
Which voltage levels do you design for?
From LV distribution up to 400 kV EHV substations, in both AIS and GIS configurations.
Can you work under an EPC contractor's title block?
Yes. We often act as the design arm of EPC contractors and support them through owner, consultant and utility reviews.
Do you take over partially completed designs?
Yes. We start with a design review, flag gaps and conflicts, and complete the package — usually faster than restarting.
What software do you deliver in?
Drawings in AutoCAD, studies in ETAP, PSCAD and CDEGS, and 3D models in the format your project uses. Native files are handed over with the package.
Discuss your project with DD Powertech
Share your scope and project stage — we'll come back with a clear engineering proposal and timeline.
4 499/5, Vinobha Nagar,
Koduvai, Tamil Nadu 638660, India
Request a proposal
Tell us about your project and we'll respond with scope, timeline and next steps.