Multi-building portfolios, roof-mounted arrays and net metering sign-off
Commissioning software for commercial rooftop solar where dozens of buildings, each with its own array, inverter and utility interconnection, need to be tracked without a spreadsheet per site.
A commercial rooftop programme is rarely one building: it is a portfolio of warehouse, retail and office roofs, each with its own array layout, inverter set, structural load assessment and utility net metering application. Deskely holds every site, array and inverter in one register, so a portfolio manager can see which buildings are ready for permission-to-operate without chasing a separate file per roof.
- Assets
- Roof array, inverter, rapid shutdown, meter
- Test
- String test, inverter commissioning, AHJ inspection
- Scale
- Multi-building portfolio
- Gate
- Permission to operate (PTO)
Choose your project type
The problem
Forty rooftops in a portfolio means forty utility applications, forty AHJ inspections and forty ways to lose track of one.
A commercial rooftop portfolio spreads array installation, inverter commissioning, rapid shutdown testing and structural sign-off across many buildings at once, often with different installation crews, different authorities having jurisdiction (AHJ) and different utility territories for each site.
When each site's commissioning pack lives in its own folder, the portfolio manager cannot see at a glance which buildings are stuck waiting on an AHJ inspection versus which are stuck waiting on a utility permission-to-operate (PTO) approval.
Deskely tags every building, array and inverter as its own asset in a shared register, so PTO readiness is reported per site and rolled up across the whole portfolio from one view.
Setting up the register
Buildings, arrays and inverters are tagged assets with their own utility and AHJ requirements.
Roof plans, array layout drawings, structural load assessments and single line diagrams for each site are parsed into a reviewed register, so every array, inverter and rapid shutdown device carries its building reference and its permit status from day one.
Pre-energisation checklists, string testing templates and rapid shutdown functional tests are templated once and instantiated across every building in the portfolio, so a new site can be added without redefining the test set.
Structural engineer sign-off, fire marshal walkdown and utility interconnection application status are held as their own record set per building, so the specific blocker for a stalled site is visible immediately.
Execution
Array testing, AHJ inspection and utility approval run in parallel across the portfolio, gated per building.
String testing, rapid shutdown verification and inverter commissioning are captured against each building's array before the site is submitted for AHJ inspection, so an inspector is only called once the evidence is actually ready.
AHJ walkdown findings and any resulting punch items are logged against the specific building and array, with the site's own permit number and inspection date attached rather than a generic portfolio note.
Utility interconnection and net metering application status is tracked per building, so a delay on one utility's PTO process does not obscure the readiness of buildings served by a different utility.
PTO and handover to the portfolio owner
The portfolio owner inherits a fleet of rooftops that each need their own O&M and warranty record, not a single combined file.
As-built array drawings, inverter warranty registers and structural sign-off for each building sit against the same asset the O&M provider will search for on the first service call, keyed to the specific site.
Because the record set builds continuously against the register, a PTO evidence pack for any one building is an export rather than a reconstruction from a shared drive months into operation.
Every signature keeps a name, role and timestamp, which is what the AHJ, the utility and the portfolio owner's asset management team all rely on before a building is marked live.
The dossier
Roof integrity and array performance are proven as separate, building-specific record sets.
A rooftop array's liability outlives the installation crew: a mis-flashed penetration is the building owner's problem for years after the electrical commissioning is signed. The dossier keeps roofing, fire code and electrical evidence distinct so a finding on one roof never reopens sign-off on another.
IEC 62446 test report
string continuity, polarity, insulation resistance and open-circuit voltage meet the standard's acceptance criteria
before grid-tie energisation of each array
Roof penetration and flashing sign-off
each penetration was flashed to the roofing manufacturer's detail without voiding the roof warranty
during racking installation, before module mounting
Ballast run weight verification
non-penetrating ballast blocks meet the racking manufacturer's uplift and wind load schedule
prior to module installation on ballasted zones
Rapid shutdown compliance record
the array's rapid shutdown labelling and initiation device meet the fire code setback requirement
at fire marshal walkdown
AC disconnect and net metering commissioning record
the utility interconnection point isolates correctly and reports to the net meter as designed
at utility interconnection sign-off
Inverter commissioning report
each string or microinverter's AC output and anti-islanding protection match the equipment list
at first energisation of each inverter or microinverter group
How it runs
From the first roof survey to portfolio-wide PTO.
Rooftop portfolios reward one shared register across every building, because PTO is won or lost site by site, and losing track of one roof stalls the whole reporting picture.
- 01
Model the portfolio
Each building, array, inverter and rapid shutdown device modelled as its own asset within a shared portfolio register.
- 02
Parse site drawings
Roof plans, array layouts and single line diagrams for every building drafted into the register with permit and structural data attached.
- 03
Template the test set
String testing, rapid shutdown verification and inverter commissioning defined once, instantiated across every building added to the portfolio.
- 04
Gate PTO on signed evidence
AHJ inspection sign-off and utility interconnection approval tracked per building, rolled up into one portfolio-wide readiness view.
FAQ
Questions about Commercial rooftop solar scopes.
Keep reading
Solar and energy storage commissioning
The full sector view: string testing, grid connection, statutory sign-off and the terminology behind them.
Read moreWalkdowns
Pre-energisation safety reviews and statutory electrical inspections run as structured walks that raise punch on the spot.
Read moreMaster data
Equipment lists, tag registers and OEM data sheets held as one structured source instead of scattered vendor binders.
Read moreOther solar and energy storage project types: Utility-scale solar farm commissioning, Battery energy storage system (BESS) commissioning, Solar-plus-storage hybrid commissioning, Floating solar (floatovoltaics) commissioning, Solar tracker system commissioning, Solar substation and grid connection commissioning, Green hydrogen electrolyser commissioning, Carbon capture and storage (CCS) commissioning, Biogas and biomass plant commissioning.