Before using this letter
This letter is not legal advice. It is a practical starting point for creating a clean written record when a utility delay or unexplained technical demand is holding up a solar or solar-plus-battery project.
Utilities can require safe interconnection, proper metering, certified equipment, correct export settings, and compliance with applicable tariffs. This letter is for situations where the utility process becomes unclear, silent, shifting, unsupported, or economically destructive without a clear written basis.
Information to fill in
Sample utility delay letter
[Customer Name]
[Service Address]
[City, State ZIP]
[Email Address]
[Phone Number]
[Date]
[Utility Name]
Interconnection Department / Distributed Generation Department
[Utility Address or Email]
Re: Request for Written Status, Tariff Basis, and Remaining Requirements for Solar Interconnection Application
Service Address: [Service Address]
Utility Account No.: [Account Number]
Meter No.: [Meter Number]
Interconnection Application No.: [Application Number]
Project: [Solar / Solar + Battery / Non-Export / Export-Limited / Backup System]
Dear Interconnection Review Team:
I am writing regarding the interconnection application submitted for the solar energy system at [service address] on [date]. The project consists of [brief project description, including system size, inverter type, battery storage if applicable, export or non-export configuration if known, and any meter or service work involved].
We respectfully request a complete written status update and a complete list of all remaining requirements for approval, meter work, and permission to operate. For each remaining requirement, please identify the specific tariff section, interconnection rule, utility handbook provision, engineering screen, meter requirement, equipment requirement, export requirement, operating setting, or safety standard being applied.
If the application is incomplete, please identify each missing item and the exact rule or application requirement that makes the item necessary. If the utility contends that a distribution upgrade, transformer upgrade, service upgrade, protection change, meter change, export limitation, non-export control, battery setting, inverter setting, or project redesign is required, please provide the written engineering basis for that requirement.
Please also provide the applicable timeline for utility review, meter work, construction, approval, or permission to operate, and identify whether the utility has met that timeline. If the applicable timeline has not been met, please provide the reason for delay, the current responsible department, and the expected completion date.
If the utility is requiring an upgrade or additional work, please provide the estimated cost, the cost-responsibility rule, the supporting engineering analysis, and any available alternatives, including export-limited operation, non-export operation, battery control settings, inverter settings, project phasing, service configuration changes, or other practical solutions.
We are not asking the utility to waive legitimate safety, metering, or interconnection requirements. We are requesting a clear written explanation of the actual rules being applied so the project can proceed under transparent, timely, and tariff-based standards.
Please provide one consolidated written response by [response deadline], including all remaining requirements for approval or permission to operate, the tariff or engineering basis for each item, and the expected timeline for completion.
Thank you for your prompt written response.
Sincerely,
[Customer Name]
[Contractor / Representative, if applicable]
Attachments:
[Interconnection application confirmation]
[Utility portal screenshot]
[Single-line diagram]
[Equipment specifications]
[Battery settings or export-control documentation, if applicable]
[Permit approval or inspection clearance, if applicable]
[Prior utility correspondence]
[Timeline of application history]
Shorter version for email
Subject: Interconnection Application [Application Number] — Request for Written Status and Remaining Requirements
Dear Interconnection Review Team,
Please provide written status for interconnection application [application number] at [service address]. Please identify all remaining requirements for approval, meter work, or permission to operate.
For each remaining item, please cite the applicable tariff section, interconnection rule, handbook provision, engineering screen, meter requirement, export requirement, operating setting, or safety standard. If an upgrade, export limitation, battery setting, meter change, or redesign is required, please provide the written engineering basis, estimated cost, cost-responsibility rule, and available alternatives.
Please also identify the applicable utility timeline and whether that timeline has been met. If not, please provide the reason for delay and expected completion date.
Please provide one consolidated written response by [date].
Thank you,
[Your Name]
When to strengthen the letter
Add stronger detail when the utility has missed a deadline, demanded an expensive upgrade, held permission to operate after final inspection, changed requirements after approval, or refused to identify the applicable tariff section.
| Utility problem | Add this request |
|---|---|
| No status update | Please identify the current application status, assigned department, missing items, and next action date. |
| Meter delay | Please provide the meter work order number, scheduled meter date, and applicable meter timeline. |
| PTO delay | Please identify every remaining condition for permission to operate and the tariff basis for each condition. |
| Transformer upgrade demand | Please provide the engineering study, transformer loading analysis, cost estimate, and cost-responsibility rule. |
| Export limit demand | Please identify whether export-limited, non-export, or inverter-control alternatives are available. |
| Battery setting dispute | Please identify the required operating mode, control setting, certification issue, or tariff requirement. |
| Changed requirement | Please identify what changed after prior review and the written authority for the new requirement. |
What to attach
A utility delay letter becomes stronger when it is attached to a clean record. Keep the package organized and factual.
- Interconnection application confirmation.
- Utility application number, meter number, and account number.
- Portal screenshots showing status and dates.
- Single-line diagram and site plan.
- Panel, inverter, and battery specifications.
- Export-control or non-export documentation, if applicable.
- City permit approval or final inspection clearance, if applicable.
- Utility emails, deficiency notices, and prior status messages.
- Timeline of submittals, resubmittals, meter work, and delay.
- Cost impact or production impact caused by delay or redesign.
Escalation note
If the utility does not respond, the next step may be a supervisor request, customer complaint, public utility commission inquiry, contractor escalation, formal tariff dispute, or attorney letter. Escalation is strongest when the application number, dates, written requirements, missed timelines, and requested remedy are already clear.
The utility letter principle
The customer is entitled to more than silence. Ask for the rule, the timeline, the engineering basis, and the path to permission to operate.