Electrical panel upgrades in Northern Colorado typically cost $1,500–$4,500 and take 4–6 hours with a 4-hour utility power-off window. The most common reasons to upgrade: a recalled Federal Pacific, Zinsco, or Challenger panel; an EV charger or hot tub that needs more amperage than your existing 100-amp panel can deliver; or breakers that keep tripping under normal use. Three Crowns Electric has completed 2,000+ panel upgrades across Northern Colorado since 2002 — surge protection, permits, and Xcel coordination are all included.
We’ve upgraded close to 2,000 electrical panels across Northern Colorado since 2002. Most of them follow the same pattern: a 100-amp or 125-amp panel from the 1970s or 1980s that was sized for a 1970s house — three lights, a fridge, maybe a window AC — and now somebody’s adding an EV charger, a heat pump, or a hot tub on top of it.
“We’ve probably upgraded close to 2,000 electrical panels.”
— Jon Trujillo, Master Electrician
What follows is what we actually find on those service calls, what the upgrade really costs, and the questions homeowners ask us most often.
How much does an electrical panel upgrade cost in Northern Colorado?
A typical residential electrical panel upgrade in Northern Colorado runs $1,500 to $4,500, with most jobs landing around $3,400. The spread depends on five things: amperage (200A vs 320A), whether the meter base needs replacing, whether the panel has to relocate, how many AFCI/GFCI breakers current code requires, and whether the utility drop needs to be re-coordinated with Xcel.
We don’t quote over the phone. We come to the house, look at what you have, and put a real number on paper before we touch a wire. The number is the number — no change orders without your sign-off.
The way we get there starts with an amperage reading:
“We do an amperage reading and check out what their home is drawing for power. And then we kind of let them know where they’re at with their power usage now. And depending on what they plan on adding, then we’d run a calculation, a load calculation for all their electricity running in the home and give them a sufficient upgrade from there.”
— Jon Trujillo, Master Electrician
The base price ($1,500–$2,000) is a 100A → 200A swap with the existing meter base in good shape. Add $600–$1,200 if the meter base also has to be replaced. Add $800–$1,500 if the panel needs to relocate (typical when an old panel sits in a closet or finished basement that doesn’t meet current NEC working clearance rules). Add $200–$400 for the AFCI/GFCI breakers required by current code. Surge protection is included — see below.
| Upgrade scenario | Typical cost | Time on site |
|---|---|---|
| 100A → 200A (existing meter base in good shape) | $1,500–$2,000 | 4–6 hours |
| 100A → 200A + new meter base | $2,400–$3,200 | 6–8 hours |
| 100A → 200A + panel relocation | $3,300–$4,500 | Full day |
| 200A → 320A residential service upgrade | $4,500–$7,500 | 1–2 days, utility approval |
| FPE / Zinsco / Challenger replacement | $1,800–$4,500 | Same as 200A upgrade |
For most homes spending the time on a load calc up front saves money later. We’ve watched homeowners install an EV charger on a panel that couldn’t really handle it, then call us six months later when the breaker kept tripping. The right size on day one is cheaper than fixing it twice.
When do I need to upgrade my electrical panel?
Three signs, in order of how often we hear them:
“Most homeowners will call us due to if they have breakers tripping. Or if they’re concerned about adding new appliances [or] EV chargers. They’re concerned that the main breaker is incapable of handling the load of the house.”
— Jon Trujillo, Master Electrician
1. Breakers keep popping. A breaker that trips once is doing its job. A breaker that trips every time the dryer and the microwave run at the same time is telling you the circuit is past its rated draw. Sometimes the fix is splitting one circuit into two; sometimes it’s a bigger panel.
2. You’re adding a high-draw appliance. EV chargers, hot tubs, induction ranges, heat pumps, and electric vehicle chargers are the four most common triggers we see. Most 1970s panels weren’t sized for any of them — let alone two at once.
3. The main breaker won’t hold the house. Less common but more serious. The whole-house breaker is rated for the panel’s amperage. If your home is drawing more than the panel can sustainably handle, the main pops. Add a second EV or a heat pump on top of an already-stressed system and you’ll see this.
What we typically find when we get there:
“A lot of them we notice are 100amp or they’re 125 max. And they’ve already have hot tubs running in their homes. They’ve already have AC units running. So now they’re wanting to add either electric cooktop or they’re looking at adding an EV charger.”
— Jon Trujillo, Master Electrician
The fourth sign — homeowners rarely notice it themselves — is the one we look for on every site visit: a panel that’s already at maximum draw under normal use. Most people don’t know they’re maxed out until we read it on a meter.
Should I worry about my Federal Pacific, Zinsco, or Challenger panel?
Yes. We replace these on sight, no matter what other work brought us to the house.
“Any customers we come across [with FPE/Zinsco/Challenger panels], we highly recommend that they remove those and install a newer updated panel.”
— Jon Trujillo, Master Electrician
The Federal Pacific Stab-Lok breakers were recalled by the National Housing Authority because they don’t reliably trip on faults. That’s not a regulatory abstraction — it’s something Jon has tested in the field:
“I’ve held wiring trying to short them out before and it’ll literally just start welding. So they are not, they do not trip out like the new design breakers do if there’s a fault in your wiring.”
— Jon Trujillo, Master Electrician
A breaker that doesn’t trip on a fault means a short circuit can heat the bus bar past its rated temperature without the breaker doing anything about it. That’s how electrical fires start. Most home insurance companies now require Federal Pacific replacement before they’ll renew a policy. Same story for Zinsco and Challenger panels — same era, same failure mode.
We’ve replaced these from Boulder all the way up to Wellington. They’re tied to era, not city: 1970s through early 1980s builds, regardless of which town. If your home was built in that window, check the panel cover for the Federal Pacific, Zinsco, or Challenger name. If you see it, get it out.
For the deep dive on why these panels fail and what the replacement process looks like, see our Federal Pacific guide or our Challenger panel guide.
Can I upgrade my panel without rewiring my whole house?
In most cases, yes. The panel is one component; the wiring inside the walls is separate. We can replace your 100-amp panel with a 200-amp panel and reconnect the existing branch circuits to new breakers — no drywall opening, no rewiring required.
The exceptions: if the existing wiring is itself a problem (knob-and-tube, undersized aluminum branch circuits, deteriorated insulation), some of it has to come out as part of the work. We see this most often in Old Town Fort Collins homes from the 1960s and earlier. Sometimes it’s just one or two circuits we replace; rarely it’s a whole-house rewire.
The diagnostic on the first visit tells you which situation you’re in. If we find aluminum branch wiring on 20A breakers — a known fire risk — we either rewire the affected circuits or downsize the breakers to 15A as a code-compliant alternative.
For full-house rewires we work with you on a phased plan so we’re not opening every wall at once.
Is upgrading to 200-amp service worth it for an EV charger or hot tub?
For a single Level 2 EV charger on a 100-amp panel: about half the time, yes. For a hot tub or a second EV: nearly always.
The math on a Level 2 charger: a typical Level 2 setup needs a 50A or 60A circuit. If your existing panel is 100A and you’re already running an AC unit, an electric oven, and a dryer, you don’t have 50A of headroom to give. About half our EV charger jobs include a panel upgrade for exactly this reason.
For two EVs in the same household, the answer is almost always yes:
“If they don’t have 200amps at that point and they want two level two chargers, it’s definitely we’re looking at upgrading their service to a 200amp.”
— Jon Trujillo, Master Electrician
For homes with shops, welders, or air compressors on top of a primary residence, we sometimes upgrade past 200A to 320A residential service:
“You can go to a 320amp which is considered the 400amp service for a residential home. There is some that has to take place with getting prior approval from the utility company. But yes, we have definitely upgraded homes, especially homes that have shops built off to the sides of them and they’re running welders and air compressors.”
— Jon Trujillo, Master Electrician
320A residential is the ceiling. Above that the home has to step up to commercial-grade equipment, and we coordinate with Xcel for the higher-amperage service drop. The pricing reflects the larger meter base, the heavier feeder, and the utility approval — but the install pattern is the same.
Do you include surge protection with panel upgrades?
Yes. Every panel upgrade includes a Type 2 whole-home surge protector at the panel. We don’t charge extra for it.
“We highly, highly recommend any update that we do, we include a surge protector for those new panels.”
— Jon Trujillo, Master Electrician
A panel-mounted surge protector clamps voltage spikes before they reach your appliances, EV charger, or HVAC. In Northern Colorado the lightning season runs June through September — June 1st through about Labor Day is when we see the most customer calls about fried electronics:
“Installing a surge protector will protect [appliances] from any lightning strikes or anything close to the home.”
— Jon Trujillo, Master Electrician
The reason it’s included: when we open up your panel, installing the surge protector is a 20-minute add-on for us. Charging another $300 for it would be a margin grab; we’d rather build it in and be the only Northern Colorado electrician doing it that way. For full details on what surge protection actually covers, see our whole-home surge protection page.
Do you pull the permits and coordinate the inspection?
Yes. Every panel upgrade includes the permit, the utility coordination, and the final inspection. You don’t make any phone calls.
We pull the permit with the local building department (different per town — Fort Collins, Loveland, Windsor, Greeley, and Boulder all have their own offices). We schedule the disconnect and reconnect with Xcel Energy. We’re on-site for the inspection.
“Most of [the inspectors] are already journeyman electricians, if not have gone through intensive training on what they are looking at when it comes to service upgrades.”
— Jon Trujillo, Master Electrician
We respect the inspectors. They keep us honest, and a clean inspection is part of why we have a 2-year written warranty on the work — if it passes inspection, it’s been verified twice.
When the meter main combo is upgraded, sub-panels in the basement or utility room get the same treatment:
“If there’s a secondary sub panel in the basement or in another utility room, then we include that in the upgrade. So all of your main panels between your main distribution panel and sub panels would be all updated with newer breakers that are up to code their arc fault GFCI breaker ratings.”
— Jon Trujillo, Master Electrician
So the full scope of a “panel upgrade” with us is: meter base + main panel + sub-panels + AFCI/GFCI breakers + surge protector + permit + utility coordination + inspection. One conversation, one quote, one number.
Last reviewed by a Master Electrician: April 29, 2026.
Have a question about your specific panel? Call (970) 645-3114 for a free estimate. We’ll come to your home, run the load calculation on your existing panel, and put a written number on paper — no pressure, no commission-driven upsell.
