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Best 5 Solar Companies in Longmont, CO

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Written By Max Peterson|Last Updated: February 05, 2024

Longmont residents are purposeful about protecting the environment and living greener lifestyles. That includes using alternative energy sources like solar. Local homeowners might choose solar to break free of high power costs from sources like coal. An experienced solar installer can help you set up and adjust a system that matches your energy needs without costing a fortune. On this page, we'll showcase Longmont's leading solar providers and provide expert advice for your solar journey.

Best High-Efficiency System
4.8
  • Builds custom, high-efficiency solar systems suited to each home
  • Extensive coverage area throughout the country
  • Offers energy storage and EV charger add-ons
Most Reputable
4.4
  • Offers high-efficiency panels and storage options
  • Provides unique in-house financing options
  • Recognized as one of the most reputable solar companies
Best Solar Panel Leasing
4.4
  • Provides system monitoring
  • Offers diverse financing options for various budgets
  • Provides EV and solar battery solutions

Top Longmont Solar Companies

Progreen Solar Logo

Progreen Solar

4.6/5
Based on 31 customer reviews.

Services Offered

Panel InstallationBattery StorageOff-Grid Solar Systems

Highlights

  • Prompt service delivery
  • Free quotes
  • Reliable customer support
1030 Boston Ave, Longmont, CO 303-484-1410 progreen-solar.com
Klick Solar Logo

Klick Solar

4.5/5
Based on 137 customer reviews.

Services Offered

ConsultationFinancing AssistancePanel Installation

Highlights

  • Free quotes
  • Prompt service delivery
  • Informative resources
1811 Hover St C, Longmont, CO 720-465-9073 klicksolar.com
Independent Power Logo

Independent Power

4.5/5
Based on 99 customer reviews.

Services Offered

Battery StoragePanel InstallationFinancing AssistanceOff-Grid Solar Systems

Highlights

  • Free quotes
  • Reliable customer support
  • Clear pricing policy
1501 Lee Hill Dr Unit 24, Boulder, CO 303-443-0115 solarips.com
Custom Solar Logo

Custom Solar

4.1/5
Based on 22 customer reviews.

Services Offered

Battery StorageSolar CarportsCleaning And MaintenancePanel Installation

Highlights

  • Informative resources
  • Reliable customer support
2840 Wilderness Pl, Boulder, CO 303-859-8597 customsolar.us

More Local Solar Companies

Aqua Care Solar LLC

User Reviews: 4.6/5 

5171 Eldorado Springs Dr ste d
Boulder, CO 80303

Green Collar Crew

User Reviews: 4.7/5 

11001 W 120th Ave #400
Broomfield, CO 80021

Liv Solar

User Reviews: 4.4/5 

7140 W 117th Ave #C3
Broomfield, CO 80020

Photon Brothers

User Reviews: 4.6/5 

7705 W 108th Ave
Broomfield, CO 80021

Sandbox Solar LLC

User Reviews: 4.7/5 

341 63rd Ave
Greeley, CO 80634

Solar Pathways Energy & Electrical

User Reviews: 4.7/5 

155 Boardwalk Dr unit 507
Fort Collins, CO 80525

Elevated Independent Energy

User Reviews: 4.5/5 

7000 Broadway STE 104
Denver, CO 80221

Vanguard Solar Services

User Reviews: 4.7/5 

6145 Broadway Unit 5
Denver, CO 80216

Freedom Solar Power - Denver Solar Panel Installers

User Reviews: 4.4/5 

2300 E 76th Ave Ste D400
Denver, CO 80229

To share feedback or ask a question about this article, send a note to our Reviews Team at reviewsteam@thisoldhousereviews.com.

Ranking Methodology

Our team has researched dozens of solar providers near Longmont, focusing on the following criteria:

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Facts about Longmont
Average Max Temp:59°F
Solar Payback Period:8.9 years
Average Daily Sunlight:60%
Homes Powered by Solar:3,525
Average Annual Energy Bill:$943
Solar Power per Capita Percentile:48.0%

Expert Tips By

This Old House empowers homeowners with the knowledge and tools they need to tackle various projects and navigate the complexities of homeownership.

Benefits of Solar Energy

Solar energy has numerous advantages that will enhance your home for years to come.

  • Lowered energy bills: With solar energy systems, you generate power without paying the tacked-on costs of grid-connected power. Going off-grid can eliminate your bills completely.
  • Better energy independence: Solar systems with battery backups operate through power outages and emergencies, and you won't have to rely on the grid for your safety and comfort.
  • Reduced carbon footprint: Solar is a highly abundant clean energy source, meaning you can reduce or eliminate your home's dependence on non-renewable sources.

What Solar Incentives Are Available to Longmont Homeowners?

The state of Colorado offers multiple solar incentives to help minimize your solar system costs. Here is a breakdown of eligible solar programs where you live.

Incentive Type: Property Tax Incentive

Website: cdola.colorado.gov

Incentive Amount:

100% exemption for renewable energy system property

Incentive Type: Sales Tax Incentive

Website: tax.colorado.gov

Incentive Amount:

100%

Incentive Type: Rebate Program

Website: energysmartcolorado.com

Incentive Amount:

Residential
PV: 50% up to $500
Solar Thermal: 50% of project costs
Commercial
50% of project costs

Incentive Type: Sales Tax Incentive

Website: bouldercolorado.gov

Incentive Amount:

~15% refund on sales and use tax for the solar installation

Incentive Type: Rebate Program

Website: energysmartcolorado.com

Incentive Amount:

PV: 25% of cost
Solar Water Heat: $25% of cost
Solar Thermal Tune-up: 25% of project cost
Micro-hydro and Geothermal: 25% of cost

Incentive Type: Property Tax Incentive

Website: cdola.colorado.gov

Incentive Amount:

100% exemption for the percentage of electricity capacity (AC) of a community solar garden attributed to residential or governmental subscribers or organizations that are already exempt from property taxes

Incentive Type: Performance-Based Incentive

Website: xcelenergy.com

Incentive Amount:

Systems 0.5 kW - 25 kW: $0.005/kWh
Medium-sized Systems 25.1-500 kW: $0.0375/kWh
Large Systems (>500kW): Determined through competitive bid

Incentive Type: Sales Tax Incentive

Incentive Amount:

Varies (local option)

Incentive Type: Property Tax Incentive

Incentive Amount:

Varies (local option)

Incentive Type: Rebate Program

Website: efficiencyworks.org

Incentive Amount:

Air Sealing: $300-$500
Insulation: Up to $1,815
Duct Sealing: $200 (gas-heated homes only)
Window Replacement: Up to $1,000
Air Handler Blower Motor: $150
Whole House Mechanical Ventilation: 20% of cost
Heat Pumps: $500
Replacement Furnace: $300-$500 (gas-heated homes only)
Ductless Mini-Split: $250/head
Replacement Gas Boiler: $300 (gas-heated homes only)
Replacement Water Heater: $100-$500
AC System: $150-$500
Whole House Fan: $275
Evaporative Cooler: $500

Incentive Type: Rebate Program

Website: unitedpower.com

Incentive Amount:

CFL Recycling: FREE
New Energy Star Refrigerator/Freezer: $30
Refrigerator/Freezer Recycling: $75
New Energy Star Clothes Washer: $40
New Energy Star Dishwasher: $20
New Electric Thermal Storage Units (on automated Time-of-Day control panel): $4-$16/kW
New Electric Thermal Slab (on automated Time-of-Day control panel): $4-12/kW
Water Heaters: $20-$400
Terminal Unit for Heat Pump A/C Units: $75-$85/Unit
Heat Pumps: $100-$450/ton
Geothermal Heat Pumps: $200-$500/ton

Air Conditioners: $100-$150

Incentive Type: Loan Program

Website: xcelenergy.com

Incentive Amount:

Up to $50,000

Incentive Type: Rebate Program

Website: xcelenergy.com

Incentive Amount:

Refrigerator Recycling: varies, contact utility for details
Natural Gas Furnace: $300
EC Motor in New or Existing Furnace: $100
Air Conditioning/Air Source Heat Pump: $300-$600
Mini-Split Heat Pump: $300
Water Heater: $70-$450
Evaporative Cooling: $200-$1,200
Attic Insulation: $350-$600
Wall Insulation: $350-$600
Air Sealing, bypass sealing, and weather-stripping: $175-$450
Ground Source Heat Pump: $300/ton
Smart Thermostat: $50

Incentive Type: Rebate Program

Website: xcelenergy.com

Incentive Amount:

Attic Insulation: $400-$700
Air Sealing/Bypass Sealing/Weather-Stripping: $250-$550
High Efficiency Lighting: 30% of cost
Wall Insulation: $450-$700
Evaporative Cooling System: $325-$1200
Central Air Conditioner (New): $400 - $700
Central Air Conditioner (Trade In): $550
Ground Source/Geothermal Heat Pump: $300 per ton
Electric Heat Pump Water Heater: $550
Programmable Thermostat: $25
High Efficiency Furnace: $400
Electrically Commuted Motor: $125
Tankless Water Heater: $200
Standard Tank Water Heater: $100
ENERGY STAR Refrigerator: $15
ENERGY STAR Clothes Washer: $30

Incentive Type: Loan Program

Website: colorado.gov

Incentive Amount:

$35,000

Incentive Type: Loan Program

Website: colorado.gov

Incentive Amount:

$250,000

Incentive Type: Performance-Based Incentive

Website: xcelenergy.com

Incentive Amount:

2015 Large RFP Program:
Determined through competitive bid. RFP released on March 3, 2016

Incentive Type: Loan Program

Website: energysmartcolorado.com

Incentive Amount:

$25,000

Incentive Type: Rebate Program

Website: pvrea.com

Incentive Amount:

Refrigerators/Freezers: $30
Refrigerator/Freezer Recycling: $60
Clothes Washers: $30-$40
Clothes Dryers: $30-$90
Dishwashers: $20
Standard Water Heaters: $30-$50
Heat Pump Water Heaters: $350
Heat Pump Waste Heat (geothermal): $100 plus $25 for a lifetime warranty
Geothermal Heat Pumps: $500/ton plus $200/ton 2019 bonus incentive
Ground Source Heat Pump Desuperheater: $100/unit
Air Source Heat Pumps:$300-$450/ton plus $200-$300/ton 2019 bonus incentive plus $100/unit for integrated controlled ETS backup
Terminal Air Source Heat Pumps: $85/unit
Air Conditioners: $100-$150
Residential LED Lighting: 50% of cost
Commercial Lighting: Varies, see program website
Irrigation Motors: $1.50-$8.00/hp
Variable Frequency Drives: the lesser of 50% of cost or $1,600-$6,800/unit

Incentive Type: Rebate Program

Website: EnergySmartYES.com

Incentive Amount:

25% of project cost

Incentive Type: Personal Tax Credit

Website: ecowatch.com

Incentive Amount:

30% federal tax credit for systems placed in service after 12/31/2021 and before 01/01/2033. Good for: solar water heat, solar photovoltaics, biomass, geothermal heat pumps, wind (small), fuel cells using renewable fuels.

How To Choose the Best Solar Company in Longmont

The more informed your company research is, the better your solar system will ultimately perform. Make your choice based on the following important considerations.

Licensing and Training

While electricians and plumbers in Colorado have state-issued licenses from the Colorado Electrical Board or Colorado State Plumbing Board, the state's unique home-rule structure means counties and cities can issue their own solar professional if they choose. Solar providers can also earn certificates from standards organizations and trade groups. The most recognized ones in the industry come from the NABCEP. Most company websites will prominently display earned credentials, but you should also ask your estimator for more information.

Cost of Solar Panels in Longmont

The kind of solar panels you purchase dictates how much power you can produce. Monocrystalline panels cost more but give you the best performance. Polycrystalline panels produce less power, but they're worth it if you want a traditional panel style without the high cost. Thin-film panels aren't recommended for large residential installations, but they are ideal for small projects like converting RVs and sheds.

Additional accessories, such as electric vehicle (EV) chargers and battery storage, will add to your overall costs. However, they might make your solar system more efficient and convenient to use. Not every solar contractor offers these add-ons, so look for a contractor that sells them if it's a priority for you.

Most Longmont homeowners opt for solar systems rated for five kilowatts (kW) of electrical capacity. These systems cost about $19,900 to set up, considering both materials and labor. You can find more specific cost information in the table.

Solar Panel CostAverage Cost
Solar Monocrystalline$1,148
Solar Polycrystalline$895
Thin-Film$523
Solar Battery$735
Solar Home EV Charger$2,755

Financing Solar Energy in Longmont

Choosing the optimal financing solution will affect your overall solar system cost and expected savings. Common payment options include power purchase agreements, cash payments, leases, and loans. Though it involves a large up-front payment, cash is the most economical choice because it doesn't accrue interest and qualifies you for incentives. Solar loans are the next best option. As with a car or home loan, you'll pay a monthly rate towards system ownership, including interest. You can still apply for cost-saving solar incentives, and depending on your lender, you could put as little as $0 down. Solar leases allow you to rent your panels for a set monthly rate, while PPAs let you pay only for the energy you use, akin to an electric bill. Both options disqualify you for solar incentives and don't grant you system ownership. Solar experts generally don't recommend them, but they might be suitable in some cases. Look for companies that offer multiple payment plans to find the right fit for your budget.

The table below lists the average payback periods for different capacities of solar systems in Longmont.

The IRS allows you to claim a 26% federal tax credit on the full cost of the solar system, so long as you purchase it before 2032. City and state governments and utilities might also offer their own rebates, incentives, and financing programs that could save you more money.

Solar System CapacityEstimated Payback period
1 kW1.8 years
2 kW3.6 years
5 kW8.9 years
10 kW17.8 years

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Frequently Asked Questions About Solar in Longmont

How much money could I save by going solar in Longmont?

On average, Longmont homeowners spend around $943 per year on power bills. Once you repay your solar array, you could reduce your costs by $976.62 for every kilowatt you produce.

Is solar energy readily available in Longmont?

Yes, solar energy is reaching new heights in Longmont. Some homes already generate solar power on-site or through utility grids, and they're backed by a state solar economy with 7174 workers and counting.

Will solar energy systems increase my Longmont home value?

Yes, solar panels will raise your property value. According to the National Renewable Energy Laboratory (NREL), for every dollar you save on energy bills, your home value rises by $20. So, if your panels save you $600 per year on energy costs, your property could appreciate $12,000.

Is installing solar panels a quick job?

Your solar job's duration will depend on its size and complexity, as well as Longmont's permit and inspection procedures. It could take a few weeks to two months on average.

What care do my solar panels need, and how often do they need it?

To preserve your solar system's efficiency, inspections and cleanings every six months are usually enough. In dusty or dry seasons, your panels might need cleanings every one to two months. Your installer can recommend a maintenance schedule. Its team could also tackle the cleaning for you.

How long does it take to pay back a solar loan in Longmont?

Most Longmont homeowners pay back a solar loan in 14.3 years. You can shorten the payback period by paying off extra loan principal each month.

What are some "red flags" to watch for as I research companies?

While many online reviews are positive, even the best solar installers might have complaints. You should know these early red flags for the best chances of a well-done job:
  • Pressuring you into signing a contract
  • Being evasive about warranties, cost, references and credentials and training
  • "One-size-fits-all" approach
  • Not thoroughly inspecting your site
  • No references or testimonials

Should I get quotes from multiple Longmont solar companies?

Yes, we advise obtaining free solar quotes from three to five companies. You should examine each quote and compare financing options, prework scope and costs, equipment costs, labor fees and warranty details. Ensure each quote offers an itemized financial plan and includes your projected payback period.

To share feedback or ask a question about this article, send a note to our Reviews Team at reviewsteam@thisoldhousereviews.com.