Colorado County Mandates Plug-In Vehicle Wiring for New Homes

By · January 28, 2013

Volt charger install

Effective January 2, 2013, all new homes built in Boulder County, Colorado must be wired for the future. This includes pre-wiring a home for plug-in vehicles and solar panels. It's now code in Boulder County that all garages associated with homes, duplexes and townhouses come with 240-volt charging units or are pre-wired for simple installation of charging units at a later point in time.

"It’s a good example of leadership on the part of the community," stated Mike Salisbury, transportation program associate at the Southwest Energy Efficiency Project. "Pre-wiring for electric vehicles as part of new construction can save the average homeowner $1,000 over the cost of a retrofit outlet for a plug-in vehicle."

In addition, the amended codes requires builders to either install solar panels for generating electricity or to wire for future installations.

The goal, as related to the adoption of the aptly titled "2012 International Energy Conservation Code," is to end up with homes, by 2022, that produce as much energy as consumed, referred to as "net-zero homes."


· · 5 years ago

That is nice and a good start.

But to be honest, they are nothing more than a set of wires that is similar to wiring required for oven ranges. It will be cheaper since it is usually only wired to the garage where the power comes in from the grid.

It shouldn't cost $1,000. More like couple hundreds at most especially during early construction days...

· · 5 years ago

I believe the intent of the statement was that it will cost, on average, $1000 less to install during original construction than to install after the fact.

This is good. I'm glad they also include Solar. Since CO is snow country, I hope this also includes reinforcing the roof for the extra load of the panels above and beyond the snow load. My roof needed a bit of reinforcement which would have cost a pretty penny had I not done it myself.

· · 5 years ago

Too bad the default Voltec they are installing won't work with many cars, including mine.

· · 5 years ago


I don't think they are installing a "default" EVSE. I thought it was just the wiring. Although, this does beg the question of what gauge wiring they're installing. The Voltec only draws 15A, so it doesn't need as beefy wires as a unit drawing 32A.

As far as not working with many cars, the Voltec unit works just fine on the Volt and the Leaf, which are by far the two most popular plug-ins in the US. It *should* work with other cars too, just at a much lower rate. Are you saying that your Tesla will not charge at all on the unit?

· · 5 years ago

@Brian Schwerdt

The Tesla Roadster does not work with the level 2 voltec, 120 volt voltec, LeGrande, and of course, it doesn't work with my Schneider 2430ws. There are 2 more it won't work with but I can't remember their names at the moment. I've already discussed in previous posts how my distributor chewed out Square - D for selling such junk at such a high price to an unsuspecting public. As mentioned, it overheats too. But its not like a Fire Starter Blink.

Agreed it SHOULD work. But too many places have too many idiots employed to have something as sensible as that happen.

· · 5 years ago

"too many places have too many idiots employed to have something as sensible as that happen"

Harsh! (But sadly true).

New to EVs? Start here

  1. Seven Things To Know About Buying a Plug-In Car
    A few simple tips before you visit the dealership.
  2. Incentives for Plug-in Hybrids and Electric Cars
    Take advantage of credits and rebates to reduce EV costs.
  3. Buying Your First Home EV Charger
    You'll want a home charger. Here's how to buy the right one.