Longmont, Colorado has 19 solar installation companies verified on EnergyRanked, with 794 combined customer reviews and an average 4.7-star rating across the rated installers. This guide ranks the top installers in Longmont by review depth, customer rating, and verified business credentials.
How We Rank Longmont Solar Installers
EnergyRanked combines verified Google rating, total review count, contractor licensing data, and certifications (NABCEP, EnergySage, BBB) to produce a ranked list. We do not accept paid placement. Listings are sorted by a weighted score that gives credit to both rating and review depth — a 5-star company with 200 reviews ranks above a 5-star company with three reviews. Our Longmont ranking is recalculated whenever a listing’s review profile updates.
Top 10 Solar Installers in Longmont
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About Solar in Longmont
Longmont sits in Boulder and Weld Counties and is served primarily by Longmont Power & Communications. Longmont is municipal-utility (LPC); net metering is available with separate interconnection agreement. Colorado homeowners benefit from the federal solar Investment Tax Credit (currently 30%), Colorado’s sales tax exemption on solar equipment, and a property tax exemption that prevents solar systems from increasing assessed home value. Permit and interconnection timelines in Longmont typically run 2-3 weeks from contract signing to install, depending on jurisdictional load and HOA review.
Colorado averages around 5.5 peak sun hours per day, making it one of the better solar resources in the Mountain West. A typical 8 kW residential system in Longmont produces roughly 11,500-12,500 kWh per year, offsetting a significant share of average household electric usage. Net metering rules vary by utility — confirm with your installer whether Longmont Power & Communications offers full retail credit or partial credit for excess generation.
Frequently Asked Questions
How much does solar cost in Longmont?
A residential solar system in Longmont typically costs $2.80-$3.60 per watt before incentives. An 8 kW system runs roughly $22,000-$29,000 gross, dropping to about $15,500-$20,000 after the 30% federal tax credit. Final pricing depends on roof complexity, equipment selection, and battery storage decisions. Always compare 2-3 quotes.
How long does a solar install take in Longmont?
Once you sign a contract, expect 2-3 weeks for permitting, design, and utility interconnection paperwork. The on-roof installation itself usually takes 1-3 days. Permission to operate (PTO) from Longmont Power & Communications typically follows within 2-4 weeks of installation completion.
What incentives are available in Longmont?
Longmont solar customers can typically combine the federal solar tax credit (30%), Colorado’s state sales tax exemption on solar equipment, the property tax exemption for renewable energy systems, and any utility-specific rebate or net metering credit offered by Longmont Power & Communications. Some local jurisdictions also offer expedited permitting that reduces soft costs.
How do I choose between Longmont solar installers?
Look at three things: the installer’s actual review record (volume + average rating), their verified credentials (Colorado contractor license, NABCEP certification, manufacturer authorizations), and the equipment they recommend. Use EnergyRanked to compare profiles side-by-side, then request quotes from your top 2-3 candidates and compare the line-item proposals — not just the bottom-line price.