A tenant notice about a temporary generator should state what is happening and why, where the unit sits, the dates and hours it runs, what noise to expect, any planned power interruptions and cutovers, who to call, and what tenants should do. Write it in plain language, send it before the equipment arrives, and attach a named contact who answers the phone. Tenants accept a diesel generator in the lot far more easily when they know the schedule and the person responsible. Silence is what produces complaints, not the machine itself.
Temporary power on an occupied renovation is a safety topic as well as a communication one. OSHA’s construction electrical standard, 29 CFR 1926.404, says the employer must use either ground-fault circuit interrupters or an assured equipment grounding conductor program for 120-volt, single-phase, 15- and 20-ampere receptacle outlets that are not part of permanent building wiring and are in use by employees. That text addresses worker protection, so the tenant notice should not restate it as a promise to tenants. Confirm with your safety lead how it applies to your site and keep the notice focused on what tenants need to know.
What the notice has to cover
The table below lists each item a notice should carry, what to write for it, and where the information usually comes from. Anything you cannot fill in yet stays as a bracketed placeholder until the project team confirms it. Do not guess a date or an hours window to make the notice look complete, because a wrong date costs more trust than a late notice.
| Item | What to write | Usual source |
|---|---|---|
| What and why | Temporary generator supplying power during renovation work | Project manager |
| Location | Where the unit sits and which areas are fenced or restricted | Superintendent |
| Dates and hours | Start date, expected end date, daily run hours | Project schedule |
| Noise | Plain description of the sound and when it is highest | Contractor, rental supplier |
| Interruptions | Date, start time, expected duration, affected areas | Electrician, project manager |
| Contact | Name, phone, email, after-hours route | Project manager |
| Tenant action | What to do before, during and after an outage | Property manager |
Hours deserve special care. Generator run time is often tied to the work shifts on site, and rental billing is commonly structured around single, double or triple shifts, so the schedule you give tenants should match the shift plan the project has chosen. If the plan changes, send a short update rather than letting the posted hours go stale.
Planned interruptions are the line tenants read first
A cutover from building power to the generator, or back again, can interrupt service even when everything goes to plan. Whether a transfer is automatic or manual depends on the equipment and the electrical design, and a transfer switch rental is one way projects handle that handoff. Ask your electrician how long any interruption is expected to last and which areas it touches, then state only what they confirm. If the answer is not known yet, say the window will follow in a later notice and name the date by which it will arrive. For the sequence behind each outage, see the article on phased cutovers on a multi-floor renovation.
Tenants with sensitive operations need the most lead time. Examples include refrigerated storage, server rooms, medical or lab equipment, and anything that depends on a clean shutdown. A property manager usually knows who they are, so route those tenants a direct call in addition to the posted notice. How those needs differ between office and clinical spaces is covered in office and clinical renovation power needs.
Tone and timing
Tone matters as much as content. Write as one neighbor informing another: short sentences, no technical jargon, and no defensive language about how little disruption to expect. Say what will be noticeable, including the hum of the unit and the presence of fuel handling, and let the tenant draw their own conclusion. Overpromising quiet is the fastest way to turn a minor irritation into a formal complaint.
Timing depends on your lease terms, the contract and local requirements, so confirm the required notice period with the property owner or counsel. A common sequence is an early heads-up when the plan is set, a reminder shortly before delivery, and a same-day or day-before reminder for any interruption. Each message should repeat the contact details so a tenant never has to find an earlier notice.
Who sends it
The notice usually goes out under the property manager’s or building owner’s name, because tenants recognize that sender and the lease relationship runs through them. The general contractor supplies the facts, and the project manager reviews the final text so the dates match the schedule. Hand-delivered or posted copies help for tenants who do not read email. Keep one person responsible for updates so tenants never receive two versions of the plan.
Placement items to confirm with the safety lead
Some placement questions affect tenants directly, so they belong on the pre-notice checklist even though they are not all printed in the notice. The list below covers the items to settle before you describe the location to tenants. Each one depends on the site, so confirm every item with your safety lead rather than assuming a standard answer.
- Exhaust direction, keeping diesel exhaust away from air intakes and occupied openings such as doors, windows and vents
- Fuel storage and refueling approach, and who is responsible for it
- Fencing or barriers and where tenants and visitors can walk
- Cable routing so cords do not cross walkways or entrances
- Access for delivery, service and removal without blocking tenant parking or emergency routes
If the generator size is still undecided, a load list sizing guide helps the team settle it before the location is described in writing.
Notice skeleton to fill in
The skeleton below can be pasted into an email or a posted sheet. Every bracketed item is a placeholder for a fact the project team must confirm, and nothing in it should be filled by assumption. Delete any line that does not apply to your building.
Subject: Temporary power during renovation at [building name]
Dear [tenant name or “tenants”],
Starting [start date], [contractor name] will operate a temporary diesel generator at [building name] to supply power during renovation of [area or floor]. The work is expected to continue until [end date].
Location: The unit will sit at [location]. The area around it is [fenced or restricted description].
Hours: The generator is expected to run [days] from [start time] to [end time].
Noise: You may hear [description of sound] near [areas]. We will [noise mitigation, if any].
Power interruptions: On [date], power to [areas] will be off from [start time] to [expected end time] while we switch to [or from] the generator. [Additional dates, or “A later notice will confirm any further interruptions.”]
What to do: Please [tenant actions, such as save work, shut down equipment, move vehicles, or keep walkways clear] before [time].
Questions: Contact [name] at [phone] or [email]. After hours, call [after-hours contact].
Thank you for your patience, [sender name and title]
For a wider view of how to separate renovation zones from occupied space, see the companion guide on generator rental for renovations in occupied buildings, which covers zone isolation and shared building systems.
Getting the unit and the notice lined up
A notice is only as reliable as the delivery date behind it, so lock the equipment plan before the first message goes out. Stag Power Rentals supplies diesel generators from its Dickinson, TX yard across a fleet ranging from 20 kW to 2000 kW, and rental billing is built around single, double or triple shift use, which helps you match the hours you promise to tenants to the hours you pay for. Start with the construction industry overview to see how temporary power is handled on job sites, then send your load details and schedule through the quote request form. Once the dates are firm, the notice nearly writes itself.
Frequently Asked Questions
How far ahead should tenants be told about a temporary generator?
The required lead time depends on your lease, contract and local requirements, so confirm it with the property owner or counsel. Send a first notice when the plan is set and a reminder before delivery. Planned interruptions need their own reminder.
Who should sign the tenant notice?
Usually the property manager or building owner, since tenants recognize that sender. The general contractor provides the facts and the project manager checks the dates before it goes out.
Should the notice give the exact generator location?
Yes, describe where the unit sits and which areas are fenced or restricted. Confirm the placement, including exhaust direction away from air intakes and occupied openings, with your safety lead before you write it down.
What if the interruption window is not confirmed yet?
Use the placeholder and say a later notice will give the date and time. Do not estimate a duration, because the electrician sets it and a wrong figure damages trust.
Do tenants need to do anything during a cutover?
Often yes, such as saving work or shutting down sensitive equipment. The property manager knows which tenants are affected, so list the actions in the notice and call the sensitive ones directly.