2021's best rated solar companies in Boulder, CO

Compare their prices online

Best solar companies in Boulder 2021

Updated: May 10, 2021

Compare the prices and reputations of solar installers, solar panel manufacturers and other solar energy companies servicing Boulder.

10 best rated solar installers in Boulder, CO in 2021

Stats for solar companies in Boulder:

Companies reviewed

58

Avg rating of Boulder solar installers

3.99

Avg size of residential system

9.53kW

Avg price 9.53kW installed system

$17,278 ($1.81 per watt)

Boulder solar cost & savings calculator

Cheapest solar companies in Boulder, CO 2021

 

Average cost of solar installation in Boulder

Table 1: Average cost of residential solar systems by system size
System size* Avg cost per watt Avg cost
(After tax credit) show before tax
4kW $2.60 $7,691
5kW $2.50 $9,236
6kW $2.39 $10,630
7kW $2.42 $12,544
8kW $2.44 $14,464
9kW $2.38 $15,834
10kW $2.35 $17,397
12kW $2.34 $20,737
15kW $2.23 $24,723

Top 10 solar panels used in Boulder, 2021

Top solar loan providers

Installing a 10.3kW solar system in Boulder, 2021

Net cost of system

$16,397-$20,041

Average payback time

Annual power production

15,696 kWh

Levelized cost of solar energy

4¢ /kWh

If you don't get solar

18¢ /kWh

(25 year forecast of avg electric rates)

Savings over 25 years

$46,815 - $51,743
(Savings shown after repayments of capital)

Cash flow graph based on cash purchase of this 10.3kW system

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Going solar in Boulder

Check out all of the ways energy providers of Boulder can help you be more energy efficient and save money.
Table 2: Available incentive programs
Eligibility: Federal incentive
Type: Personal Tax Credit
Eligibility: State incentive
Type: Sales Tax Incentive

Showing 1 - 2 of 8

Note: Please keep in mind that the best source of up-to-date information on incentives are the solar installers who specialize in your area.

Types of solar energy companies

There are several different types of solar companies, and there are significant differences between them.

Large corporate solar companies

These are companies like Tesla, Sunrun and Vivint Solar with corporate ownership and wide geographical coverage. When residential solar took off back in 2012, they were the first to offer zero-down solar options and thus gaining massive market share. However, these companies grew too quickly and were unable to maintain the quality of their customer service; this is reflected in their poor review scores on SolarReviews and other sites. Furthermore, these large companies face stiff competition from local solar companies who now offer zero-down financing via specialist solar loan companies. Indeed, in a bid to stay competitive, in July 2020 Sunrun and Vivint, the largest companies by market share, announced they were merging.

Local and family-owned solar installation companies

These companies are typically one-stop shops that both sell and install solar systems. They are more likely to employ their own installation team rather than outsourcing the task. This is a good thing: our reviews indicate that customers are more satisfied with jobs performed by in-house crews.

Solar sales companies

These are companies that sell solar to homeowners over a large geographical area, but rely on outsourced installation labour to supply all the equipment, manage the permitting, and perform the installation. For example, they may sell you a solar system for $15,000, but then pay an EPC contractor $12,000 to supply and install the entire job. These companies also tend to have super-aggressive sales tactics, and we generally see low customer satisfaction for consumers who sign with them.

EPC contractors

EPC contractors do all of the permitting, installation and inspections for solar jobs that other companies sell. They became common as large corporate solar companies like SolarCity sold zero-down systems across vast parts of the country where they had no installation teams of their own. Large corporate solar companies still tend to use outsourced installation labour to protect themselves from any liability in the case of accidents. Like all roof work, solar panel installation carries large safety risks for workers.

Solar panel manufacturers

These are the companies that make the solar panels. Unfortunately, very few solar panel manufacturers still make solar panels in America. Even San Jose-based SunPower now makes all of its panels overseas. Ironically, probably the only major company making panels in the US right now is Jinko Solar, a large Tier 1 Chinese-owned manufacturer with a factory in Jacksonville, FL. The leading solar panel manufacturers are LG, Panasonic, QCells, SunPower, LONGi, Trina Solar, Canadian Solar, JA Solar, GCL, and Hyundai.

Solar inverter manufacturers

Inverters convert the DC power made by your panels to AC power that your home can use. Inverters cause far more warranty issues than the solar panels themselves. If there’s one piece of advice we have for those going solar, it’s to buy a good inverter brand. The rapid shutdown rule now in force in most jurisdictions means that micro inverters or power optimizers need to be used, rather than string inverters.

(This is unfortunate, as string inverters have far fewer warranty issues). We recommend the brand Enphase for micro inverters, and SolarEdge for power optimizers. If string inverters are allowed where you live, then we suggest either SMA or Fronius.

Solar finance providers

Consumers who want to buy solar panels (instead of lease them) can now access loans from many different companies. Buying solar is preferable to leasing as it allows you to keep the 26% federal solar tax credit; if you lease panels, the credit goes to the lessor instead. Solar loan applications are made through your solar installation company, who acts as the dealer for the financing company. Leading solar loan providers include Mosaic, Dividend and Greensky.

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