Quick answer
Between selecting a solar contractor and operating the system, you need a verified design, local permits, utility interconnection review, coordinated construction, inspections, commissioning and the utility’s operating authorization. Track these as separate milestones—not one “installation complete” date. Con Edison’s process includes construction, testing and final acceptance; having panels on the roof is not the final milestone. (coned.com)
Your first action: Ask the contractor for a dependency-based schedule showing who owns each approval, what must happen before construction or shutdowns, and what evidence will demonstrate completion.
This guide uses New York City and Con Edison’s service territory as its jurisdictional example, with sources checked on October 10, 2026. Elsewhere, use the same planning framework but replace the local requirements with those of your building authority, fire authority and electricity utility.
1. Assign responsibility before approving the delivery schedule
Start with a responsibility matrix, not just a promised completion date.
NYC’s Department of Buildings says the owner should assemble the design team before construction. Its owner checklist also states that the property owner is ultimately responsible for the project and must provide the required signature or consent for the application. Hiring a contractor does not remove that responsibility. (NYC DOB owner checklist)
For each workstream, name a lead and define the document that closes it:
| Workstream | Lead to identify | Completion evidence to request |
|---|---|---|
| Building design and filings | Registered design professional | Approved drawings and applicable permits |
| Utility application | Contractor or interconnection specialist | Case reference, review decisions and outstanding conditions |
| Site logistics | Contractor with facilities manager | Approved access, staging and delivery plan |
| Electrical shutdown | Electrical contractor with facilities team | Agreed outage scope, authorization and restoration plan |
| Inspections and commissioning | Applicable inspectors and commissioning agent | Reports, resolved deficiencies and sign-offs |
| Operational handover | Contractor with system owner | Operating authorization and handover package |
Treat this as a project-management template, not a statement that every project has identical roles.
For leased premises, ask the property owner and tenant to agree who can authorize roof access, electrical interruptions and changes to building equipment. Resolve those permissions before booking disruptive work.
2. Verify the roof, electrical connection and usable layout
Before treating the proposal’s layout as final, ask the design team to verify three things.
The building: Request confirmation of structural suitability, roof condition, mounting approach and any necessary remedial work. DOE’s PV guidance treats structural design and site-specific weather risks as part of system design—not an afterthought. (energy.gov)
The electrical connection: Ask where the system will connect, which equipment must be altered, whether utility-side work is expected, and whether an interruption to business power will be necessary. Request drawings that distinguish existing equipment from proposed work.
The usable roof: A roof plan must account for more than panel coverage. In NYC, rooftop access requirements address firefighting operations. The city’s rooftop-access guidance identifies variance applications for rooftops 100 feet or less in height that do not comply with the applicable Fire Code requirements. Do not assume every solar project needs a variance; have the design professional determine the applicable route. (NYC rooftop-access guidance)
Also ask about materials that construction could disturb. NYC’s solar owner checklist calls for an asbestos investigation to identify asbestos-containing material that will be removed or disturbed. (NYC DOB owner checklist)
Practical check: Require one coordinated drawing revision for the building filing, utility submission and construction team. Con Edison specifically asks applicants to keep forms and documents consistent. (coned.com)
3. Run permitting and utility review as separate workstreams
A building approval and a utility approval answer different questions. Track them separately, even when submissions progress alongside one another.
NYC DOB’s owner guidance requires permits and appropriately qualified professionals for solar work. Its checklist explicitly warns owners not to begin work without a DOB permit. Have the design professional identify the required filings and any additional agency approvals for the actual scope. (NYC DOB solar requirements; owner checklist)
For Con Edison, the interconnection application goes through PowerClerk. For projects above 50 kW and up to 5 MW, its published process includes application review, screening and, when required, a Coordinated Electric System Interconnection Review, or CESIR. That study determines necessary utility-system changes. Construction and testing follow the applicable review and commitment steps. (coned.com)
Ask for a live approvals register containing:
- Submission date and case reference.
- Current status and outstanding questions.
- Person responsible for the next response.
- Conditions affecting design, purchasing or construction.
- Latest documented decision.
Do not convert a published review period into a guaranteed project duration. Request a schedule that distinguishes review assumptions from equipment procurement, utility work, construction, inspections and correction time.
4. Build a dependency map rather than guessing a universal timeline
Use the following sample planning map, then have the project team adapt it to the approved process.
| Milestone | Dependency to confirm | Release check |
|---|---|---|
| Coordinated design | Site surveys, roof and electrical assessment, access requirements | Design team confirms the submission package |
| Building and utility submissions | Required drawings, authorizations and application documents | Submission receipts and case references recorded |
| Construction release | Applicable permits and utility-stage conditions | Project lead documents readiness |
| Equipment delivery and rooftop work | Site access, staging and approved construction plan | Facilities team approves business interface |
| Electrical connection work | Equipment readiness and any necessary outage coordination | Shutdown authorization confirmed |
| Inspections and testing | Completed work and required documentation | Deficiencies recorded and resolved |
| Operating handover | Required sign-offs, utility authorization and contract acceptance checks | Owner receives completion evidence |
The utility branch may contain extra steps. Con Edison’s larger-project process includes utility construction where required, testing and final acceptance. Do not hide those dependencies inside a single contractor installation bar. (coned.com)
Give each milestone an owner, predecessor and evidence requirement. Keep target dates provisional until the responsible parties confirm readiness.
For example, “electrical connection ready” is more useful than “connection scheduled” only if someone has checked equipment availability, required approvals and the agreed outage arrangements.
5. Plan deliveries, lifting and access around business operations
Ask the contractor to produce a logistics plan that your operations team can review before deliveries are booked.
DOE’s project-validation guidance includes site access and compatibility with ongoing site use; it specifically flags truck traffic as a potential issue when considering solar carports. That principle is useful for planning construction interfaces at commercial premises too. (DOE PV procurement guidance)
The facilities review should cover:
- Delivery windows: Avoid conflicts with receiving and dispatch commitments.
- Staging: Agree where equipment may be stored without taking essential operating space.
- Lifting: Have qualified personnel establish the lifting arrangements and exclusion areas.
- Access: Agree routes for workers, visitors and business traffic.
- Roof coordination: Preserve access needed for other building maintenance.
- Weather changes: Identify who can postpone work and notify affected teams.
NYC DOB’s contractor guidance says owners must maintain properties safely and that owners, contractors and construction site managers must minimize accident and fire risks. Keep safety planning under the responsible professionals rather than asking warehouse staff to improvise around construction. (nyc.gov)
Practical check: Walk the proposed delivery and access routes with the contractor and operations manager. Mark conflicts on the plan before equipment arrives.
6. Work through a warehouse shutdown example
Illustrative scenario—not a reported installation: A NYC warehouse shares its yard between inbound deliveries and outbound dispatch. Its proposed rooftop solar project also requires a planned electrical interruption for connection work.
The facilities manager can work through the problem as follows:
- Map the operating commitments. List delivery appointments, dispatch cutoffs, tenant access and functions that cannot tolerate an interruption.
- Separate the events. Plan equipment delivery, rooftop construction and the electrical shutdown as distinct activities. Do not assume they need the same business restrictions.
- Verify affected loads. Ask the electrical contractor to confirm which circuits and equipment will lose power. Have operations and IT review that list.
- Assess continuity needs. If uninterrupted operation is essential, request a professionally designed temporary-power or continuity arrangement. Do not treat it as an improvised site task.
- Coordinate the utility interface. Con Edison’s PV guide directs projects requiring an interconnection outage to coordinate with the utility customer project manager. It also warns that work outside normal utility working hours can create additional charges. (coned.com)
- Set a go/no-go meeting. Before the outage, confirm equipment readiness, crew availability, authorizations, communications and a recovery plan.
- Verify restoration. Require confirmation that affected business systems have restarted before operations declares normal service restored.
The example deliberately assigns no outage duration or cost. Those depend on the connection design and agreed work scope. A weekend request is not automatically an available or cheaper solution.
7. Distinguish inspections, commissioning and permission to operate
These are separate completion checks.
Inspections and sign-offs address applicable regulatory requirements. NYC’s owner checklist requires inspections and sign-offs to close the project permit. It also identifies commissioning requirements for solar projects with renewable generating capacity of 25 kW or greater, including filing commissioning before DOB sign-off. Ask the design professional to confirm how that applies to your project. (NYC DOB owner checklist)
Commissioning verifies the installed system through documented checks and tests. DOE recommends establishing the commissioning plan and budget before construction; its commercial-PV guidance includes system documentation, array testing and whole-system performance testing. (energy.gov)
Utility operating authorization completes a different approval track. Con Edison’s PV guide describes field verification and resolution of identified issues before the final acceptance or permission-to-operate letter for larger projects. (coned.com)
Request a handover package containing:
- As-built drawings and equipment information.
- Applicable inspection, commissioning and sign-off records.
- The utility’s final authorization.
- Monitoring access and alert responsibilities.
- Warranties, maintenance requirements and owner training.
- A remaining-defects list with named owners and closure dates.
Ask the qualified project team to define when testing may occur and when routine operation is authorized. Do not let business staff energize the system based solely on a construction-completion message.
8. Check the mistakes that leave a finished system unfinished
Before accepting the project as operational, test for these common planning errors:
- One ambiguous completion date: Replace it with construction, inspection, commissioning, utility-authorization and handover milestones.
- No owner for utility questions: Name the applicant’s lead and require status reporting.
- Conflicting documents: Check that equipment and connection details match across approved and as-built records.
- Late shutdown planning: Obtain the affected-load list and business approval before fixing the outage date.
- Unresolved inspection findings: Request evidence of closure, not just a verbal assurance.
- A monitoring dashboard treated as acceptance: Require the applicable reports and authorization documents.
- A payment milestone called only “completion”: Ask the contracting team to define exactly what evidence satisfies it.
End each progress meeting with three questions: What is blocking the next milestone? Who owns the next action? What document proves it is complete?
That gives business owners and facilities teams a practical way to manage delivery without pretending to control agency reviews, utility work or technical decisions.