Last updated 2026-08-20
TL;DR
Colorado does not issue a standalone temp power license. If you install or energize temporary electrical systems for other people, you need State Electrical Board licensing and contractor registration. Dropping a generator with no hookup is a different path. Local permits and the serving utility still apply on most jobs. Confirm every fee and wait time with DORA and the local AHJ. Do not plan a start date around a promised approval.
Do you need a license for temp power in Colorado?
Yes, if you install, alter, or energize temporary electrical work for someone else. Colorado has no separate temp power license. The work sits under the Electricians Practice Act. You need a State Electrical Board credential, and a shop that offers the work needs contractor registration, unless a real statutory exemption fits.
The statute is blunt. C.R.S. 12-115-109 states, "No person shall engage in or work at the business, trade, or calling of a journeyman electrician, master electrician, or residential wireman in this state until the person has received a license from the board." [1]
Calling the job temp does not move it outside that sentence. Landing cam, building a spider, terminating a panel, setting a meter socket, making the utility-ready gear live: that is electrical work. Inspectors read the conductors, not your marketing.
Renting a packaged generator and walking away can be a different path. Get the split in writing. If your people make the electrical connections, you are back on the board's side of the line.
I would not take a GC's verbal "it's only temporary" as cover. Read the exemptions in article 115 yourself. Utilities and a few plant and mine cases live there. Event drops and construction services usually do not. [1]
Still mapping the first-year sequence after the license question? Use how to start temp power in Colorado. That walk-through is the operations path. This page is the license path.
What Colorado license actually covers temporary electrical work?
The credentials that cover temporary electrical work are the ordinary State Electrical Board licenses: apprentice registration, residential wireman, journeyman electrician, master electrician, and electrical contractor registration. There is no carnival class, no film class, no 480V temp class.
A firm that offers electrical work needs a currently licensed Colorado master as the responsible master, plus contractor registration. File what the board's applications page actually asks for. Do not invent a packet from another state. [2]
Code edition is whatever the board has adopted by rule. Before you argue NEC language with an inspector in Denver or a mountain county, read the current laws, rules, and policies page. [3]
A residential wireman card is the wrong tool for most construction temp power. That license is residential. A 480V jobsite service is not a house. I would not try to stretch it. Confirm scope on the applications materials if you are genuinely on a dwelling.
Do not buy a national temp power card and expect an AHJ to honor it. They will not. Compare the paper with temp power license in Arizona or temp power license in California if you work both sides of a state line. The cable crosses. The license does not.
Do you need a license if you only rent generators?
Not for the rental itself, if your people never install or energize electrical work. Colorado licenses the electrical trade, not the act of owning a tow-behind generator. The line is the landing, not the trailer hitch.
Stay clean. Your invoice should say rental and delivery. The licensed electrical contractor on the site should pull the permit, make the connections, and call the inspection. If your tech "just helps land the camlocks," you just did electrical work.
I would put that split in the contract. Name the licensed contractor. Keep your people off terminations. GCs love a one-call vendor. That convenience is how rental shops accidentally become unlicensed contractors.
Fueling, spotting, and showing the customer where the E-stop is can stay on the equipment side. Building the distro, bonding the skid, or tying into a temp panel does not.
Want both rental revenue and hookup revenue? Get on the board path for real. Mixing them without paper is how you meet an investigator. The cheaper move is to partner with a licensed shop until your own master is on the ticket.
How do you get on the State Electrical Board paper path?
You apply to the State Electrical Board under DORA's Division of Professions and Occupations. There is no temp power bureau to apply to. Use the board's applications and forms page as the source of record. [2]
Typical shop path looks like this. One person qualifies as a Colorado master electrician. The firm registers as an electrical contractor with that master listed as responsible. Journeymen and apprentices work under that structure. Reciprocity exists for some out-of-state licenses, but you still apply here before you pull a wire. Confirm current reciprocity rules on the same applications materials. [2]
I would not pay a consultant to "get you licensed" if you still have to sit the exam and document your hours. That fee is often a restatement of the board website. Sit down with the forms. If your hours are short, no packet writer can invent them.
Exam content, experience, and fees change. Confirm them on the board pages, not on a forum screenshot. [2] [4]
Rules and the adopted electrical code sit on the laws, rules, and policies page. Read that before you print a shop standard. [3]
No approval timeline is honest if it does not come from the board on your file. I would not bid a start date against an application you have not even submitted.
How much does temp power cost in Colorado?
There is no statewide price list for temp power work. License paper is the cheap part. Equipment, fuel, insurance, utility charges, and idle time are the real bill. Confirm every government fee on the page that issues it. Do not use a number you heard in a trailer.
Colorado Secretary of State charges $50 to file articles of organization for a domestic LLC. [5] A statement of trade name is $20 on that same fee schedule. A periodic report is $10. That is entity paper, not an electrical license.
State Electrical Board application and renewal fees change. Confirm them on the board fee and application materials before you write a check. [2] [4] Exam vendor charges sit on top of that. I will not quote a board fee here because the honest number is the one on today's schedule.
Local electrical permits are set by the city or county. Utility temporary service charges are set by Xcel or the municipal utility or the coop. Pull those from the serving utility's construction desk for the actual address. [12]
Insurance and cable will dwarf the license. A used 480V package costs more than every state form in this article combined. If you want a paper checklist for cable, fuel, and 480V, TempPowerPath sells a $179 one-time Cable + Fuel + 480V Kit at /start. The site is an independent publisher, not a contractor and not a law firm. You do not need that kit to follow this path.
I would fund a real deposit account for the utility and a real inland marine policy for the copper before I bought a wrap for the trailer. Nobody has good public data on Colorado rental rates by kW. Bid the run, the fuel, the standby, and the permit line items you actually collected.
How long does temp power take in Colorado?
Entity formation with the Secretary of State can be fast online. Electrical licensing, local permits, and utility energization are slower, and they do not run on one clock. Nobody can honestly promise you a Friday livening date from a blog.
Confirm processing on your electrical application with the board. Reciprocity is not same-week just because you already hold another state. Mountain county permit desks run different queues than Denver. Weather and design review sit on the utility side. [2] [12]
The long pole on grid-tied temp service is usually the utility, not DORA. Xcel and the municipal utilities publish construction processes. Use those, then ask the construction coordinator for that feeder area. [12]
I would never promise a GC energization while the utility design is still a voicemail. Build slack. If the job is a generator-only island with no utility landing, your critical path is the electrical permit and the inspection, not a transformer lead time.
Same-day "we can temp you Friday" marketing is how new shops write apology emails. Get the address, the load, and the AHJ on the phone before you quote a calendar.
What local permit and inspection paper do you need?
Almost every installation needs a local electrical permit and an inspection, even when the gear will come out in six weeks. The State Electrical Board sets licensing. The city or county (or a state inspector in some areas) sets the permit. Those are different counters.
Call the building department that has the street address. Ask how they want temporary construction service, temporary events, and generator tie-ins listed. Some use a standard electrical permit. Some have a temp service type. Do not assume Denver rules apply in unincorporated Weld County.
Who pulls the permit? The licensed electrical contractor responsible for the work. A generator rental company that is not licensed should not be on that permit. If your name is on it, you own the corrections.
Inspections happen before concealment and before energization, on the AHJ's sequence, not yours. Show up with the gear matching the permit. A drawing that says 200A when the socket is 320A is how you lose a day.
I would walk the site with the inspector's checklist in mind: bonding, working clearances, covers, GFCI where required, strain relief, and a label path that a stranger can follow at 2 a.m. Pretty copper does not pass if the ground is open.
What does the serving utility require for temporary service?
If the temp service ties to the grid, the serving utility has its own construction rules, and those rules can stall you after the city permit is already in hand. Xcel Energy publishes electric service construction information for builders and contractors. Municipal utilities and coops have their own desks. [12]
Typical pattern: you or your electrician provide the temp gear to the utility's standard, apply for the temporary service, and wait for the utility to connect or energize. Do not assume the utility sets the pole, owns the pedestal, or supplies the socket. Ask.
Colorado is not one utility. Colorado Springs Utilities, Fort Collins, Longmont, and the mountain coops do not use Xcel's packet. Address first, then the process.
I would send the load, the one-line, and the site sketch with the application, not after the third missed call. Utility coordinators are not your project managers.
Line extension or a temp-to-perm conversion can add design time. If the permanent service is close, ask whether a temp-to-perm design beats a throwaway pedestal. Sometimes it does. Sometimes it is a waste because the permanent location is still a dirt pile.
What business registrations come before any electrical paper?
Form the entity first. Colorado Secretary of State is the filing office. Articles of organization for a domestic LLC are $50 on the published business fee schedule. [5] If you operate under a name that is not the legal entity name, file the trade name. That fee is $20 on the same schedule. [5]
Then get a sales tax account if you sell or rent taxable goods, including generator rentals and consumable cable in many cases. Use the Department of Revenue sales and use tax pages, not a blog's memory of the old form. [11]
Unemployment insurance and withholding show up once you have employees. Workers' compensation is its own question, covered below. None of this replaces the electrical license. It just keeps the shop legal enough to invoice.
I would not spend money on a trademark search or a custom invoice suite before the SOS filing and the tax account exist. Those two are cheap and they unblock bank and insurance applications.
Keep the registered agent address real. Mountain P.O. boxes and a cousin's basement create service-of-process messes you do not need in year one.
What insurance and workers' compensation do you need?
GCs will ask for general liability, auto, inland marine on the gear, and workers' compensation long before they ask about your master number. The legal workers' comp duty is separate from the bid sheet.
Colorado requires employers to carry workers' compensation insurance, with limited exceptions. Confirm your facts on the Division of Workers' Compensation employer page, not on a Facebook group. [8] [10] A single-member LLC with no employees may sit in a different spot than a shop with two helpers. Confirm that with CDLE and your agent. I would not guess it from another state.
Even if the statute does not force a policy on you personally, the GC's exhibit will. Budget the policy. Fighting the additional insured wording is a worse use of week one than just placing coverage.
Inland marine matters more in this trade than people think. Copper walks. A $2 million GL policy does not replace a stolen 4/0 run.
I would buy the insurance the job requires before I bought a second generator. Uninsured gear is a hobby.
Do diesel generators trigger Colorado air or fuel rules?
They can. Do not assume a towable jobsite generator is invisible to CDPHE or to EPA oil rules. Air and fuel paper is separate from the electrical license.
Colorado uses Air Pollutant Emission Notices for many sources. Engines have exemptions and thresholds that change with how the unit is classified and how you operate it. Confirm on the CDPHE APEN and air permits page for the actual engine, not for "generators in general." [9]
Fuel storage has a federal tripwire. EPA SPCC rules can apply once aggregate aboveground oil storage exceeds 1,320 gallons. [7] Belly tanks plus yard totes plus a bulk tank all count toward that math. Local fire departments still apply the fire code to smaller tanks.
I would inventory every diesel container on the yard before I advertised 24-hour fuel service. Crossing 1,320 gallons by accident is a paperwork problem, not a badge of growth.
If you only spot customer-owned machines and never store oil on your site, your SPCC risk looks different. Still ask, because a wet hose and a yard tank can change the answer fast.
What will fail a temp power inspection in Colorado?
Open grounds, missing GFCI protection on construction receptacles, unlabeled feeders, crushed strain relief, and gear that does not match the permit. Pretty camlocks do not save a bad bond.
OSHA is not the city inspector, but it is the other hammer on a construction site. OSHA requires GFCI protection or an assured equipment grounding conductor program for employees on construction sites. The text is direct: "The employer shall use either ground-fault circuit interrupters as specified in paragraph (b)(1)(ii) of this section or an assured equipment grounding conductor program as specified in paragraph (b)(1)(iii) of this section to protect employees on construction sites." [6]
Temporary wiring methods can be lighter than permanent methods, but they are not a free-for-all. OSHA's construction electrical rules still govern listing, polarity, covers, and how you run the flexible cord. [13]
I would fail my own set before I called the inspector. Lift every box cover. Pull on every strain relief. Check the ground continuity like you mean it. The reinspection fee is not the pain. The idle crane is the pain.
Work Texas or Alabama jobs too? Do not import those shop habits blindly. Read temp power license in Texas and temp power license in Alabama as separate paper paths.
How should you confirm fees and wait times with the board?
Use the live DORA pages. Call or message the State Electrical Board with your application type, not with a story about temp power. Ask for the current fee, the current form, and whether your file is even complete. Write down the name and the date. [2] [4]
Do the same with the building department and the utility for that address. Three counters. Three answers. None of them care that your GC already poured the slab.
I would keep a one-page confirm log: date, office, what they said about fee and sequence. When the story changes, you have notes. That is boring. It works.
Skip anyone selling a guaranteed issue date. TempPowerPath is an independent publisher. It does not issue licenses and it does not pull permits. If you still want the Cable + Fuel + 480V Kit, it lives at /start. You can run this whole path without it.
For a neighboring startup sequence, how to start temp power in Arizona and how to start temp power in California show how different the first-year paper feels once you leave Colorado.
Frequently asked questions
Is there a separate temp power license in Colorado?
No. Colorado does not issue a temp power license. Temporary installation work is ordinary electrical work under the Electricians Practice Act. You use the State Electrical Board licenses and, if you offer the work as a firm, electrical contractor registration. Confirm current forms on the DORA applications page before you file.
How much does temp power cost in Colorado?
State entity paper is cheap. Colorado Secretary of State lists $50 for domestic LLC articles. Electrical board fees, local permits, and utility charges change and must be confirmed with each issuer. Equipment, fuel, and insurance usually dwarf the licenses. Nobody publishes a clean statewide rental rate by kW.
How long does temp power take in Colorado?
SOS entity filing can be quick online. Electrical applications, local permits, and utility energization each run on their own clock. Confirm your file with DORA and the serving utility. Grid-tied temp service often waits on the utility, not the license. Do not promise a GC a livening date you do not control.
Can I rent generators in Colorado without an electrical license?
Yes, if your people only deliver and spot equipment and a licensed electrical contractor makes every connection. The moment your tech lands cam, builds distro, or energizes a panel, you are in board territory. Put that split in the contract. Inspectors read the work, not the word rental on the invoice.
Does a journeyman license let me run a temp power company?
A journeyman can perform licensed work. A firm that offers electrical work still needs a responsible Colorado master and contractor registration. Confirm the exact structure on the State Electrical Board applications page. I would not advertise hookup work on a journeyman card alone.
Do I need a Colorado sales tax license to rent power equipment?
If you rent or sell taxable items, you need to handle Colorado sales tax through the Department of Revenue. Generator rental is not a hobby category just because the machine is temporary. Use the DOR sales and use tax pages for the current account process. Confirm taxable treatment with DOR if a job is billed as a service.
Will an out-of-state electrical license work for Colorado temp power?
Not by itself. You apply to the Colorado State Electrical Board first. Reciprocity may shorten the exam path for some credentials, but it is not a stamp that lets you pull wire this week. Confirm current reciprocity on the board applications materials. Do not schedule a Colorado energization on another state's card.
Who pulls the permit for temporary construction service?
The licensed electrical contractor responsible for the installation. The rental company should not be on the permit unless that company is the licensed contractor. Match the permit description to the actual gear. Call the AHJ that has the street address, because Denver, the Springs, and a mountain county do not share one form.
Do I need workers' compensation for a one-person Colorado shop?
Colorado requires employers to carry workers' compensation, with limited exceptions. A shop with no employees can sit in a different place than a shop with helpers. Confirm your status with the Division of Workers' Compensation. GCs will still demand a certificate on most jobs, even when the statute is narrower.
Do portable diesel generators need a Colorado air permit?
Sometimes. CDPHE uses APEN and permit rules that depend on the engine and the operation, not on the word portable. Confirm the specific unit on the CDPHE APEN page. Do not assume a tow-behind jobsite machine is exempt. Fuel storage can also trip federal SPCC rules at 1,320 gallons aggregate.
What code applies to temporary wiring on a Colorado jobsite?
The electrical code the State Electrical Board has adopted by rule, plus the local AHJ's amendments, plus OSHA construction electrical rules on employee-covered sites. OSHA requires GFCI protection or an assured equipment grounding conductor program on construction sites. Check the board's laws and rules page for the current NEC edition.
Can a residential wireman land 480 volt temp power?
Do not plan on it. The residential wireman credential is for residential work. Most construction and event 480V temp services are not residences. Use a journeyman or master under a registered electrical contractor. If a job is truly a dwelling, confirm scope on the board applications materials first.
How do I confirm current State Electrical Board fees?
Open the DORA State Electrical Board applications and fee materials and read today's schedule. Fees change. Do not use a number from an old PDF in your downloads folder. If the page is unclear, ask the board which form and which fee apply to your exact application type, and note the date of the answer.
Does Xcel install the temporary pole, or do I?
Ask Xcel's construction process for that address. In many cases the contractor provides temp gear to the utility standard and the utility connects or energizes. That is not universal, and municipal utilities do it differently. Pull the serving utility first. Then build the pedestal the standard actually shows.
Sources
- Colorado General Assembly, Colorado Revised Statutes 2023 Title 12 (Article 115, Electricians): C.R.S. article 115 requires a board license to work as a journeyman electrician, master electrician, or residential wireman and sets exemptions and contractor-related rules.
- Colorado DPO, State Electrical Board Applications: Electrical license and contractor applications, including the current forms path, are filed with the State Electrical Board through DORA.
- Colorado DPO, State Electrical Board Laws, Rules and Policies: The board publishes the statutes, rules, and adopted electrical code policy that govern licensed electrical work in Colorado.
- Colorado DPO, State Electrical Board Fees: Current State Electrical Board application and renewal fees must be confirmed on the board fee schedule.
- Colorado Secretary of State, Business Fees: Domestic LLC articles of organization are $50, a statement of trade name is $20, and a periodic report is $10.
- OSHA, 29 CFR 1926.404 Wiring design and protection: Employers on construction sites must use GFCIs or an assured equipment grounding conductor program to protect employees.
- eCFR, 40 CFR Part 112 Oil Pollution Prevention (SPCC): SPCC requirements can apply to facilities with aggregate aboveground oil storage capacity greater than 1,320 U.S. gallons.
- Colorado CDLE, Division of Workers' Compensation information for employers: Colorado employers must address workers' compensation insurance duties through the Division of Workers' Compensation.
- Colorado CDPHE, APEN and air permits: Colorado air rules use Air Pollutant Emission Notices and permits that can apply to engines, with exemptions determined by CDPHE rules.
- Colorado General Assembly, Colorado Revised Statutes 2023 Title 8 (workers' compensation): Title 8 of the Colorado Revised Statutes contains the Workers' Compensation Act, including employer insurance duties.
- Colorado Department of Revenue, Sales and use tax: Businesses that sell or rent taxable items in Colorado use the Department of Revenue sales and use tax system for licensing and collection.
- Xcel Energy, Electric service construction: Xcel Energy publishes construction and electric service processes that contractors use for new and temporary utility service.
- OSHA, 29 CFR 1926.405 Wiring methods, components, and equipment for general use: OSHA construction rules set temporary wiring methods, including limits on how temporary power and lighting may be installed.