Services
We design solar PV plants, battery storage and switchyards, and we review designs made by others. The work below is done by our own engineers in New Delhi. We do not install.
Solar PV plant design
This is most of what we do. You give us a site and a target capacity, and we return a complete set of drawings and documents that your installer, your lender and your DISCOM can each work from.
One team produces the electrical, mechanical and civil design together, so the structure drawing agrees with the cable route and the foundation drawing agrees with both.
- Sizes designed so far
- 5 kWp to 24.8 MW
- Plant types
- Rooftop, ground-mount and carport. Fixed tilt and single-axis tracker.
- Standards
- IS/IEC norms and the DISCOM’s own requirements
- Where
- India and Nepal
What a design package contains
| Part of the design | What we work out | What you receive |
|---|---|---|
| System sizing | The capacity the site can carry, the annual yield, and what shading costs you across the year. | PV sizing and yield simulation. Array layout with shadow analysis. |
| Electrical | DC and AC system design, cable sizing, earthing, lightning protection and protection design. | Single-line diagrams. Cable schedules. Earthing and lightning protection drawings. |
| Mechanical | Module mounting structures, plant layout and row spacing, wind-load checks, fixed-tilt or tracker structure engineering. | Mounting structure drawings. Plant layout. |
| Civil | Foundations, site grading and drainage, internal roads, control-room and inverter-station layouts. | Foundation drawings. Grading and drainage. Road, control-room and inverter-station layouts. |
| Procurement and approvals | Quantities for purchasing, and the drawings an approving authority asks for. | Bill of quantities and procurement support. Approval drawing set. As-built drawing set. |
You can take the whole package or a single part of it. If you only need the electrical design for a plant whose structure is already fixed, that is a normal job for us.
Watch a plant come together
Scroll down and the plant is built in the order we design it: piles, structures, modules, power equipment, battery storage, then the switchyard and the line to the grid. Scroll back up and it comes apart again.
Foundations go in first
Nothing stands without this. Pile type and depth come from the soil report, checked for pull-out under wind and for the loads the finished array will put into the ground.
- Pile layout set out from the array drawing
- Depth and section sized to the soil investigation
- Pull-out and bearing checks against wind loading
- Pile caps levelled ready for steel
Steel rises on the piles
Posts, rails and purlins carry every module for twenty-five years. Tilt and row pitch are fixed here, and they decide how much the plant generates for the rest of its life.
- Table design with front and rear post heights
- Tilt angle and row pitch set for the latitude
- Purlin spacing matched to the module frame
- Wind-load and deflection checks on the structure
Panels go on
Modules land on the tables and get clamped down. The string layout decides how they are grouped electrically, which is why the layout and the electrical design are drawn together.
- Module placement and clamping positions
- String grouping and series counts
- Walkway and maintenance access kept clear
- Shading rechecked against the as-built layout
Current starts to move
With the array complete, power has somewhere to go. Strings gather into combiners, the inverter turns DC into AC, and the transformer lifts the voltage ready to travel.
- Combiner boxes and DC cable routing
- Inverter sizing and DC to AC ratio
- Transformer rating, cooling and protection
- Earthing and lightning protection throughout
The batteries take charge
Surplus generation charges the BESS instead of being wasted. Capacity is matched to the load profile, and the containers are laid out with the clearances safety requires.
- Battery sizing in MW and MWh for the load profile
- Container layout, access and cable routing
- PCS integration between batteries, plant and grid
- Auxiliary power, HVAC and fire-safety separation
Power leaves for the grid
The final link. Through the switchyard, up the gantries and away along the conductors, metered and protected on the way out.
- Switchyard layout and bay arrangement
- Bus-bar design with safe electrical clearances
- Earthing mat sized for step and touch voltages
- Metering and the utility interface
Battery storage (BESS)
Storage is designed around what it is for: shifting solar into the evening, covering a load through an outage, or meeting a grid requirement. The use decides the size.
- Battery sizing. MW and MWh matched to the load profile and the use case.
- Container layout. Placement, access and cable routes.
- PCS integration. How the batteries connect to the plant and to the grid.
- Auxiliary power and HVAC. What the system itself needs to keep running.
- Fire safety. Separation and clearances between containers.
Switchyards and substations
The last link between the plant and the grid. It has to evacuate the power safely, and it has to satisfy the utility at the connection point.
- Layout. Switchyard layout and bay arrangement.
- Equipment. Selection for the voltage class.
- Bus-bars. Bus-bar design and electrical clearances.
- Earthing mat. Sized for step and touch voltages.
- Protection. Protection schemes and relay coordination.
- Utility interface. Metering and the connection point.
Surveys, reviews and audits
Smaller pieces of work, usually before a project is committed or after a plant has been running a while.
Site survey and feasibility
Before anyone talks about price, we find out what the site can support, and say so plainly if it is less than hoped. We study shading across the year, check what the roof can carry, and confirm the sanctioned load, metering point and cable route on site. You get a written report with generation, savings and payback figures.
Independent design review
A second look at a design drawn by someone else, before you sign or release payment. We check it on its engineering and report what we find.
Performance audit
For a plant generating less than it was meant to. We trace the shortfall string by string, and check structures, cabling and earthing after a few seasons in service.
Expansion planning
How much more the existing roof, structure and grid connection can take, and what would have to change to add it.
How a project runs
- Assess. Site assessment, load study and feasibility. We agree the capacity and the scope before any drawing starts.
- Design. Sizing, yield simulation, layouts and shadow analysis.
- Engineer. Structures, single-line diagrams, cable schedules and the bill of quantities.
- Deliver. Approval sets and procurement support, then as-built drawings once the plant is constructed.
We stay available while the plant is being built, to answer questions on the drawings.
We work for industrial, commercial, institutional, residential and utility-scale clients. If you are a solar installer in the United States, see permit plan sets.
Questions we get asked
Are your drawings ready for DISCOM approval?
Yes. Drawing sets are prepared to align with IS/IEC norms and DISCOM requirements, so they hold up in technical review without repeated revisions. You receive a complete, review-ready package to submit.
What is actually in a design package?
PV sizing and yield simulation, array layouts with shadow analysis, structural and mounting design, electrical single-line diagrams and cable schedules, a bill of quantities for procurement, and approval and as-built drawing sets. Enough for your installers to build from without guessing, and enough for a lender or auditor to review.
Do you work outside Delhi NCR?
Yes. We are based in New Delhi and survey sites across Delhi, Gurugram, Noida, Faridabad and Ghaziabad, but we take on design and engineering work across India. Completed projects include sites in Haryana and Rajasthan.
Can you work on a plant somebody else installed?
Yes. We audit existing plants to find out why generation is below estimate, review another vendor’s design before you sign or release payment, and plan capacity expansions on roofs that already carry an array.
Do you also install the system?
Design and engineering is all we do. We are a consultancy, not an EPC. You build with your own teams or your chosen contractor, and we stay available through construction to answer questions on the drawings.
Have a site in mind?
Send us the location and whatever drawings or survey you have. We will reply with what we would need from you, what we would deliver, and how long it would take.