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Rooftop solar, from roof outline to GFC sheets.

For commercial and industrial rooftops. Engineers draw the roof once, and the plugin lays out modules, strings, trays, cables and earthing, then produces the good-for-construction (GFC) drawings and quantities.

Roof_A_Outline.dwg
Command:
E 254,512.40 N 2,048,233.10 MODELGRIDOSNAP E-ROOF
Client project

What our rooftop suite can do.

Built for a commercial and industrial solar developer in India. We don't name project clients here, and we're happy to share references.

ROOF AHVAC CABLE TRAY 300 INV-01
  • Solar · rooftop
  • AutoCAD · C# .NET

Rooftop solar design suite

Engineers draw the roof once. The plugin then lays out the whole rooftop plant and produces the drawings and quantities for construction.

  • Metal roofs, concrete (RCC) roofs and carports
  • Shadow analysis to the minute
  • Automatic stringing
  • Lifeline posts for roof safety
2 more
  • A shared module and inverter library
  • Email sign-in, installer and automatic updates
See the highlights
Highlights

From the roof outline to the construction set.

Client drawings stay private, so every picture here is our own drawing with sample data. Each tool reads what the one before it drew, so a change on the roof flows through to the quantities.

Layout

Module placement

Fills a roof area with PV modules from a shared library, for the roof type you pick, around obstructions and walkways.

  • Metal roofs, RCC roofs and carports
  • A uniform grid, or fitted around obstructions and irregular edges
  • Modules kept clear of roof edges, ridges and exclusion zones
  • Shadow analysis first, to see which areas to keep clear
1 more
  • Capacity and coverage for every PV area
HVACSTAIRSKY51 TABLES, 204 MODULESKEPT CLEAR OF ROOF EDGES AND OBSTRUCTIONS
1Module tables on an RCC roof, laid out around obstructions
WALKWAYTWO METAL ROOFS, 240 MODULESROWS EITHER SIDE OF EACH WALKWAY
2Modules on metal roofs, in rows either side of the walkways
Electrical

Cables and trays

DC cables routed along guidelines to each inverter, AC cables on to the distribution boards and the point of connection, with trays and conduits drawn, sized and labelled.

  • DC cables from the strings to each inverter, along your guidelines
  • AC cables from inverter to the sub-main distribution board (SMDB), and SMDB to the point of connection
  • DC cable sizes chosen by voltage drop
  • String and inverter schedules, with lengths and voltage drop
4 more
  • Conduit while the cables fit, cable tray beyond that
  • Trays as hatched bands with labelled centrelines
  • Bends, T and cross junctions as fitting blocks
  • A tray BOQ, in the drawing or in Excel
HVACSTAIRSKYINV-1INV-2INV-3INV-4ROUTEDC CABLES FOLLOW YOUR GUIDELINEFROM THE STRINGS TO EACH INVERTER
1DC cables routed to the inverters, along your guidelines
HVACSTAIRSKYINV-1INV-2INV-3INV-4SMDBPOCAC CABLESINVERTER TO SMDB, SMDB TO THEPOINT OF CONNECTION
2AC cables from the distribution boards to the point of connection
STRINGS1S2S3S4S5INVERTERINV-1INV-1INV-2INV-2INV-3LENGTH m849611813276SIZE mm244664V DROP %0.921.050.860.960.83INVERTERINV-1INV-2INV-3STRINGS221TOTAL m18025076MAX V DROP %1.050.960.83SIZES CHOSEN BY VOLTAGE DROPSAMPLE VALUES ONLY
3A cable schedule for every string and inverter, with voltage drop
CABLE TRAY 300INV-1INV-2INV-3INV-4INV-5BENDTRAYS AS HATCHED BANDS, CONDUIT WHILE THE CABLES FITBENDS, TEES AND CROSSES AS FITTING BLOCKS
4Trays and conduits drawn into the inverters, sized and labelled
ITEMTRAY 100TRAY 200TRAY 300BENDTEECROSSCONDUITTOTAL TRAYQTY8644281262130158UNITmmmnosnosnosmmIN THE DRAWING OR IN EXCELSAMPLE VALUES ONLY
5Tray lengths by size, fittings and conduit in one BOQ
Earthing

Earthing layout

Earths every roof in the drawing in one go, by the rules of its roof type: strips and earth pits on RCC roofs, clips and jumpers on metal roofs.

  • Every roof in the drawing earthed in one run
  • Metal roofs: legs in the table gaps or walkways, joined into a ring
  • RCC roofs: a strip between table rows and a trunk on the inverters' side
  • Clips and jumpers at the module joints
4 more
  • Earth pits with their down conductors
  • Inverter and SMDB earthing
  • An ESE lightning arrester
  • Earth pit coordinates and an earthing BOQ, in Excel or the drawing
HVACSTAIRSKYEP-1EP-2EP-3STRIPS BETWEEN THE TABLE ROWSA TRUNK ON THE INVERTERS' SIDE, AND EARTH PITS
1Strips and earth pits on an RCC roof
CLIPJUMPERCLIPS AND JUMPERS AT THE MODULE JOINTSLEGS JOINED INTO A RING ON EACH METAL ROOF
2Clips and jumpers on a metal roof
ITEMGI STRIP 25 X 3EARTHING CABLECLIPSJUMPERSEARTH PITSLIGHTNING ARRESTERQTY412963402861UNITmmnosnosnosnosEARTH PIT COORDINATES GO OUT WITH ITIN EXCEL OR IN THE DRAWINGSAMPLE VALUES ONLY
3Strip, cable, clips, pits and arrester, in one BOQ
Operations

Module cleaning system

Lays out the water network of each PV area: a water point and pump, a header, branches and taps, so every module is within reach of the hose.

  • A water point and pump for each PV area
  • A 1" header and 3/4" branches on a UPVC network
  • Taps placed so every module is within the hose's reach
  • Branches beside the walkways on metal roofs
4 more
  • Branches between the table rows on RCC roofs
  • Routes go round exclusions and skylights
  • One PV area redone without touching the others
  • A BOQ of pipes, fittings, valves and clamps
HVACSTAIRSKYWATER POINT AND PUMPHOSE REACHA 1 INCH HEADER, 3/4 INCH BRANCHES, AND TAPSEVERY MODULE WITHIN THE HOSE'S REACH
1Header, branches and taps across an RCC roof
WATER POINTA BRANCH BESIDE EACH WALKWAYFED BY A HEADER FROM THE WATER POINT
2A branch beside each walkway on a metal roof, fed from the water point
PV AREAPV-01PV-02PV-03SPARESTOTAL1" PIPE m18614296224463/4" PIPE m412318244501024COUPLERS342620585VALVES864220CLAMPS92705212226PIPES, FITTINGS AND CLAMPS FOR EACH PV AREAONE PV AREA CAN BE REDONE ON ITS OWNSAMPLE VALUES ONLY
3Pipes, fittings and clamps for each PV area, with spares
Outputs

Summaries and BOQs

Each tool keeps its own summary, and the project summary brings them together: capacity, module counts and coverage for every PV area, ready for the BOM workbook in Excel.

  • Capacity, module counts and coverage for every PV area
  • Roof type, module power, tilt and azimuth in one table
  • Project totals across all the roofs
  • Exports as a CAD table or an Excel workbook
4 more
  • A master BOM and a detailed BOM
  • Modules, mounting, inverters and cables, by category
  • A metal roof BOQ of clamps, adhesive and walkways
  • A lifeline BOQ, segment by segment
PROJECT SUMMARYPV AREAPV-01PV-02PV-03PV-04TOTALROOFRCCRCCMETALMETALMODULES204212120120656Wp550550550550kW112.20116.6066.0066.00360.80TILT101055AZIMUTH18018090270CAPACITY AND MODULE COUNT FOR EVERY PV AREAA CAD TABLE OR AN EXCEL WORKBOOKSAMPLE VALUES ONLY
1The project summary: capacity and coverage for every PV area
Project_BOM.xlsxCATEGORYMODULESMOUNTINGMOUNTINGMOUNTINGINVERTERSCABLESCABLESITEMSolar PV module, 550 WpMid clampEnd clampPedestalString inverter, 110 kWDC cable, 4 mm2AC cableQTY656218064041243200460UNITnosnosnosnosnosmmA MASTER BOM AND A DETAILED BOMBY CATEGORY AND ITEMSAMPLE VALUES ONLY
2The BOM workbook in Excel, by category and item
ROOF11223TOTALLINELL-01LL-02LL-03LL-04LL-05WIRE ROPE m48.2062.4054.6071.8036.10273.10END POST2222210MID POST3435217EVERY LIFELINE SEGMENT, WITH ITS FITTINGSSAMPLE VALUES ONLY
3The lifeline BOQ, segment by segment
Outputs

GFC sheets

Builds a titled A0 sheet set from the finished layout, picked from a catalogue of drawings, with each layout framed in its viewport and ready to plot.

  • A titled A0 sheet set, ready to plot
  • A catalogue of 23 drawings to pick from
  • Power and earthing single-line drawings
  • Setting-out plan and DC string layout
4 more
  • DC and AC cable routing, earthing and arrester layouts
  • Module cleaning, walkway and lifeline layouts
  • Legend, notes and plant details on the sheet
  • A full set built in about half a minute
HVACSTAIRSKYLEGENDAC CABLEMODULESINVERTERPOCNOTESAC CABLE ROUTINGLAYOUTSHEET SIZE A0PROJECT DETAILS
1A construction sheet for cable routing
HVACSTAIRSKYLEGENDEARTH STRIPARRESTERMODULESNOTESEARTHING AND ARRESTERLAYOUTSHEET SIZE A0PROJECT DETAILS
2A construction sheet for the earthing and arrester layout
HVACSTAIRSKYWATER POINT AND PUMPLEGENDCLEANING PIPEMODULESNOTESMODULE CLEANINGLAYOUTSHEET SIZE A0PROJECT DETAILS
3A construction sheet for the module cleaning system
What the team gets

A construction-ready set.

  • GFC sheets, with the earthing and cleaning layouts
  • A single-line diagram for each distribution board
  • Project summary and BOM workbook
  • Cleaning-system BOQ
  • Earth-pit coordinates
How it's delivered

An AutoCAD plugin that keeps itself current.

  • Built in C# .NET for AutoCAD
  • Email sign-in for each engineer
  • MSI installer
  • Automatic updates
  • A user manual for the team
Also in solar

Ground-mount solar

Utility-scale plants from the satellite map to the BOQ, including our own product, PVAstra.

See ground-mount solar
FAQ

Questions solar teams often ask.

Anything else, just ask in your enquiry.

Can we get a suite like this?

Yes. This one was built for one solar developer, so yours would be built around your standards, roof types, title blocks and BOM format. We start from your own drawings.

Which roof types does it cover?

Metal roofs, RCC roofs and carports. Each PV area follows the rules of its roof type for placement, earthing and module cleaning.

Which CAD versions does it run on?

This suite runs on AutoCAD 2021 to 2027. A new tool would target the versions your team uses.

Does it cover stringing and the single-line diagram?

Yes. You declare the strings for each inverter and MPPT, and the single-line diagram is built from the drawn strings in one click, with one panel for each distribution board.

What's in the construction set?

A titled A0 sheet set, picked from a catalogue of 23 drawings: power and earthing single-line drawings, setting-out plan, DC string layout, cable routing, earthing and arrester layouts, module cleaning, and walkway and lifeline arrangements.

How are quantities handled?

Each tool keeps its own summary, and the project summary brings capacity, module counts and coverage together. Tray, earthing, cleaning and lifeline BOQs export to the drawing or Excel, and the BOM workbook collects the materials by category.

What happens when a roof changes?

Run the tool again. Module cleaning works one PV area at a time, so the others stay as they are, and earthing covers the whole drawing in one go.

How is it installed and updated?

Through an installer with email sign-in, and updates arrive automatically.

Will you keep our drawings private?

Yes. We keep client drawings and project details private, and we're happy to sign an NDA before you share drawings.

Have rooftops to design?

Send us a roof you've already drawn and your design rules. We'll reply with an approach and a fixed quote.

Call +91 98217 09809WhatsApp usFixed quotes per milestone
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