C&I solar project delivery
Keep C&I solar projects connected from layout to closeout.
Commercial rooftop and mixed-scope jobs move faster than utility programs. Infrenta keeps layout assumptions, quantities, estimates, supplier commitments, forecasts, and installation on one project record.
The five workflows stay the same — Estimating, GeoLab, Procurement, Project Controls, and Execution. The operating profile is different: existing buildings, attachments, revisions, and more project turnover.
Harbour Commerce Centre · 1.1 MWdc · sample rooftop record
How a C&I solar project moves
Site and layout inputs enter the same five workflows used on utility-scale work.
01 · Input
Site / existing building
The building and site constraints enter the project as structured context — not a markup that estimating never sees.
- Roof areas
- Setbacks
- Obstructions
- Operating-facility access
- Revision
02 · Input
Layout & engineering inputs
A layout revision should change the quantity identity the commercial record will use. Infrenta does not replace a structural engineer.
- Attachment zones
- Array / table quantities
- Roof keep-outs
- Design revision
- Loading assumption
03 · GeoLab
GeoLab
Where a canopy pad or small ground-mount appears, GeoLab can hold the foundation assumption. It is decision-support, not sealed design.
- Pad / ground-mount option
- Issued foundation assumption
- Source
- Status
04 · Estimating
Estimating
Repeated C&I bids should reuse rate logic and keep a traceable quantity — not another disconnected workbook.
- Modules / racking
- Attachments
- Labor / equipment
- Allowances
- Issued revision
05 · Procurement
Procurement
Shorter cycles still need the RFQ to carry the current approved quantity, including attachment and racking changes.
- Approved quantity
- RFQ
- Supplier comparison
- Lead time
- Commitment
06 · Project Controls
Project Controls
A roof constraint or owner change should be visible in cost and forecast without rebuilding the job.
- Budget
- Committed
- Forecast
- Change impact
07 · Execution
Execution
Install teams work around an operating facility against the current quantity, not a remembered drawing set.
- Installed quantity
- Daily production
- Deliveries
- Constraints
- Closeout
Where C&I projects break
Disconnected artifacts
Layout → Estimate
A roof or array revision changes quantities, but the estimate still reflects the earlier layout.
Layout PDF + estimating workbook
Disconnected artifacts
Engineering → Procurement
Attachment or structural assumptions change after material is quoted.
Engineer markup + supplier quote
Disconnected artifacts
Procurement → Project Controls
Supplier pricing is captured in another spreadsheet and commitment context is lost.
Quote tracker + budget file
Disconnected artifacts
Change → Commercial impact
A roof constraint or customer change creates scope impact without a clean trace to cost.
Email thread + change log
Disconnected artifacts
Office → Field
Install teams receive drawings and trackers without the reasoning behind changed quantities.
Field folder + office copy
Instead
One connected project record.
Layout, estimate, commitment, forecast, and installed quantity stay on the same attachment identity.
When a rooftop assumption changes, the commercial project should change with it.
C&I delivery often starts on an existing roof. Attachment zones, setbacks, and keep-outs are project inputs — not a separate design product.
01
Roof / site condition
02
Attachment / layout assumption
03
Quantity
04
Estimate
05
Procurement
06
Installation
- Attachments
- Rails / members
- Modules
- Roof zones
- Obstructions
- Setbacks
- Loading assumption
- Revision
Infrenta records the assumption and its commercial consequence. It does not produce sealed structural calculations or replace a licensed engineer.
One C&I job can carry more than one construction condition.
Rooftop, canopy, electrical BOS, and limited civil work can share a project record without becoming separate products.
Rooftop arrays
Roof A and Roof B share one project record and one attachment quantity identity.
Canopy
A smaller package with its own access constraints, still estimated and bought on the same job.
Electrical / BOS
Equipment and electrical allowances stay attached to the commercial structure instead of a side workbook.
Pad / limited civil
Where a transformer pad or small ground-mount appears, GeoLab can hold the foundation assumption — it does not seal the design.
Roof A · warehouse
720 kWdc
Existing membrane, setbacks, HVAC obstruction
Roof B · office
280 kWdc
Parapet and walkway constraints
Canopy · receiving
100 kWdc
Limited structural members, staged access
Estimating
Repetition should improve estimating discipline, not create more spreadsheet versions.
C&I teams bid often. The commercial model should reuse rate logic, keep quantities traceable, and issue a revision the rest of the job can inherit.
- Reusable rate logic
- Traceable quantities
- Estimate revisions
- Allowances
- Indirects
- Labor / equipment
- Supplier pricing
- Issued revisions
Procurement
Buy the current approved quantity — even on a four-week cycle.
Vendor availability, attachment changes, freight, and staged delivery still belong on the same line as the estimate.
- 01
Approved quantity
- 02
Supplier quote
- 03
Comparison
- 04
Commitment
- 05
Delivery context
Project Controls
A design change should be traceable into cost and forecast.
Project Controls is the commercial continuity layer: original budget, approved revision, commitment, forecast, and change impact on one structure.
- 01
Original budget
- 02
Approved scope / revision
- 03
Commitment
- 04
Forecast
- 05
Change impact
Execution
Install against current project context, around an operating facility.
Daily production, material receipt, constraints, quality and safety records, and closeout stay on the same quantity identity.
- Installed quantities
- Crew production
- Material receipt
- Daily reporting
- Issue / constraint tracking
- Quality / safety
- Closeout
One project object
Follow one attachment through the project.
Ballasted roof attachments on Harbour Commerce Centre — layout to installed quantity on one identity.
01 · Layout
Ballasted attachment on Roof A after HVAC keep-out revision
Layout package Rev 03 — not a sealed structural drawing
02 · Quantity
1,600 EA
Estimate Rev 06
03 · Estimating
$152,000
1,600 × $95 = $152,000
04 · Procurement
Supplier B · $142,400
HCC-ATT-009 at $89 landed.
05 · Project Controls
$147,600
$142,400 + $5,200 remaining install exposure.
06 · Execution
400 installed · 1,200 remaining
25.0% of 1,600 EA.
What each role keeps
Estimating
Carry current quantities and assumptions into the commercial model, then issue a revision other teams can buy and control against.
Engineering
See where a rooftop or attachment revision affects project scope. The record holds the assumption — it does not seal the design.
Procurement
Buy against current approved quantities when lead times and substitutions move inside a short cycle.
Project Management
Understand cost and change impact without rebuilding the workbook after every owner or roof revision.
Field
Install against current project context while the facility stays in operation.
Leadership
See repeatable project performance across many C&I jobs on the same delivery architecture.
Same connected record. Different solar operating profile.
| Theme | Utility-scale | C&I |
|---|---|---|
| Site condition | Geotechnical conditions and large foundation programs | Existing roofs, attachments, setbacks, and operating facilities |
| Pace | Longer lifecycle and production at scale | Faster turnover and more projects in motion |
| Change | Layout and foundation revisions on large quantities | Frequent owner, roof, and attachment revisions |
| Commercial motion | Major packages, steel, and long-lead procurement | Repeated estimating and compact delivery teams |
Harbour Commerce Centre is the C&I sample on this page.
1.1 MWdc across three areas. One attachment quantity moves from layout into estimating, procurement, controls, and installation. The public product walkthrough remains Red Mesa on utility-scale solar.
Illustrative sample project. Figures are fictional demonstration data for a C&I delivery walkthrough — not a customer case study.
See the connected record, then talk through a C&I job.
Explore the public Red Mesa walkthrough, or book a conversation about rooftop, attachment, and change-control delivery.