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Tesla Powerwall Battery in Longmont

Home Battery / Energy Storage Assessment, $199

Licensed tesla powerwall battery services for Longmont and Boulder County. Whole-home backup and outage protection.

What Longmont requires

Code reference: Longmont adopted the 2024 International Codes (including the energy code) along with the Metro Cohort Model Code (MCMC, based on the 2024 IECC with regionally aligned amendments) via Ordinance O-2026-29 (adopted ~June 9, 2026; see Municode Chapter 16.22 for the energy conservation code adoption). Ord. O-2026-29

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  • Full Design Lifecycle
  • Construction & Tenant Finish
  • Smart Home · A/V · Edge Compute
Tesla Powerwall Battery

Whole-home backup and outage protection

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Pick your job and choose a time.

Pay when you book. We confirm within 24 hours or refund you in full.

  • Home Battery / Energy Storage Assessment

    Evaluation of backup power needs — critical loads, panel configuration, placement options, and solar pairing — delivered as a written sizing recommendation with firm installation pricing.

    Pay when you book · morning (8–12) or afternoon (12–4)

    What's included

    Evaluation of backup power needs — critical loads, panel configuration, placement options, and solar pairing — delivered as a written sizing recommendation with firm installation pricing. Battery hardware and installation labor are not included.

FREE PLANNING TOOLS

Both tools are free and take a couple of minutes — start in either one.

Local Service

Tesla Powerwall Battery Services in Longmont, Colorado

Autotelic provides professional tesla powerwall battery services throughout Longmont and the surrounding Boulder County area. Tesla Certified Installer for Powerwall 3 battery systems across the Denver metro. We size, install, and commission whole-home backup and outage protection, with optional solar pairing and app-based monitoring. Every project starts with an electrical panel and load assessment, followed by any required service upgrades, then municipal permit and Xcel Energy interconnection handled for you. Storm Watch and backup reserve settings are configured during commissioning. Whether you're in Longmont (north Boulder County) or nearby communities, our team delivers quality workmanship backed by Colorado licensing and full insurance coverage.

Permit Thresholds

Longmont permit thresholds

Code reference
The City of Longmont has adopted the 2024 International Codes, including the International Residential Code, effective July 1, 2026.
Code reference
Retaining walls over 48 inches.
Code reference
Accessory buildings over 120 square feet.
Code reference
Accessory buildings 120 square feet or less in floor area, though it is recommended to secure them against wind damage, and they must still meet setback requirements.
Code reference
Fencing below certain heights (commonly 6 feet).
Foundations
For one-story accessory structures greater than 120 square feet, foundations must be designed by a Colorado-licensed engineer, and the drawings must be stamped and sealed by that engineer.
Code reference
The City of Longmont enforces the 2024 International Codes, which became effective on July 1, 2026, along with the Metro Cohort Model Code.
Code reference
The Longmont Municipal Code incorporates by reference the International Residential Code for One and Two-Family Dwellings, 2021 Edition, including various appendix chapters.

Codes are amended regularly — verify current requirements with **The City of Longmont Building Services (Building Inspection division) issues residential building permits.

Energy Code

Longmont energy code quick facts

Code reference
2024 IECC (Metro Cohort Model Code based on the 2024 International Energy Conservation Code, with local/regional amendments), effective July 1, 2026.
Code reference
Longmont adopted the 2024 International Codes (including the energy code) along with the Metro Cohort Model Code (MCMC, based on the 2024 IECC with regionally aligned amendments) via Ordinance O-2026-29 (adopted ~June 9, 2026; see Municode Chapter 16.22 for the energy conservation code adoption).Ord. O-2026-29
Code reference
This aligns with Colorado state requirements for jurisdictions updating codes around this period (must meet or exceed 2021 IECC + electric/solar-ready provisions, with amendments not reducing stringency).
Code reference
Longmont follows its policy of adopting each new IECC version; it is not the Denver Green Code or Energize Denver program.
Code reference
Longmont is in IECC Climate Zone 5B.
Code reference
Key prescriptive requirements (from the adopted 2024 IECC/MCMC base provisions, applicable to additions and alterations per the IECC scope for new construction elements in remodels/additions) relevant to remodels/additions in CZ 5B include (specific MCMC amendments may modify details; always verify
Ceiling/attic insulation
R-49 (or equivalent U-factor per Table R402.1.2/R402.1.3).
Adopting ordinance/reference
MCMC/2024 IECC Table R402.1.2 (or R402.1.3 component performance alternative) as adopted in Longmont Municipal Code Chapter 16.22.

Codes are amended regularly — verify current requirements with **The City of Longmont Building Services (Building Inspection division) issues residential building permits.

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What this covers

Residential battery cabinet, inverter pairing, and backup loads panel as specified. Electrical service, disconnects, and interconnection follow the utility and Denver electrical permit.

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Technical scope

Residential battery cabinet, inverter pairing, and backup loads panel as specified. Electrical service, disconnects, and interconnection follow the utility and Denver electrical permit. No Tesla-certified-installer claim is made unless a grounded source states it.

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How the work is coordinated

No Tesla-certified-installer claim is made unless a grounded source states it. Denver-metro work is permitted locally. Colorado has no statewide general-contractor license. Cities and counties license general contractors. DORA licenses electrical and plumbing (and similar regulated trades), not general contractors. Autotelic is a municipally licensed Denver general contractor that coordinates licensed specialty trades. Denver building permits run through Community Planning and Development (CPD). Costs are project-specific; no dollar figures.

Service Area

Serving Longmont and Boulder County

We serve Longmont, CO and all surrounding Denver metro communities. Our team is based in Denver and operates throughout the Front Range, from Castle Rock to Longmont and everywhere in between. Contact us for a free estimate on your Longmont project.

FAQ

Common questions

How much does Home Battery / Energy Storage Assessment cost in Longmont?

$199.

How do I book?

Press Book next to the job, pick a date and a morning (8–12) or afternoon (12–4) window, and pay in full. We confirm within 24 hours or refund you in full.

What's not included?

Battery hardware and installation labor are not included.

What changed with the federal tax credit in 2026?

The federal residential clean energy credit expired for systems placed in service after December 31, 2025, so homeowners who pay cash or finance with a loan in 2026 receive no federal credit. Some installers still advertise the old credit; we do not. Leased or PPA systems still capture roughly 30% through the section 48E credit (through 2032), passed through by the lessor.

What will a Powerwall run during an outage?

It depends on which circuits are on the protected loads. A single Powerwall can keep essentials like lights, refrigeration, outlets, and a gas furnace running for many hours, but running an entire home for a long outage requires enough battery capacity for your specific loads. We model this during design so the system matches your expectations.

Does a Powerwall require solar panels?

No. Powerwall works as a standalone backup battery charged from the grid, so solar is not required for outage protection. Adding solar lets the battery recharge during the day and extends backup coverage, but it is optional.

How do the permit and Xcel interconnection work?

We pull the municipal electrical permit and submit the Xcel Energy interconnection application on your behalf. After installation, a municipal inspection and Xcel approval are required before the battery is given permission to operate and activated.

Who qualifies for Xcel Energy's Renewable Battery Connect rebate?

Xcel Energy customers with qualifying battery systems may be eligible for $350 per kW, up to $5,000, with income-qualified customers eligible for $800 per kW. Rebate amounts depend on program-year funding availability and the program rules in effect when the application is submitted.

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