The 10 best rated solar companies in Delaware in 2021

Compare their prices online

Compare the best solar energy companies in Delaware in 2021

Updated: June 18, 2021

There are currently 21 solar energy companies operating in Delaware. Below you can compare the prices and reputations of solar installers, solar panel manufacturers and other solar energy companies servicing Delaware today and learn how to select the best one.

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Delaware solar cost calculator

11 best rated solar installers in Delaware in 2021

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Best 10 solar installers near you


Which solar company should I choose?

The reviews scores for the largest solar companies are far worse than those for local, family-owned solar installation companies.

The best solar companies meet the following criteria:

  • Local
  • Family-owned
  • Less than 50 staff
  • Has an office near you
  • Been in business longer than 5 years
  • Employs their own installation crews
  • Uses Tier 1 solar panels
  • Uses inverters from Enphase, SolarEdge, SMA or Fronius

The solar industry is full of fly-by-night solar companies — both big and small — that open one year and are gone the next.

Solar panels last for 25-30 years, so you want an installer who will help you with any problems or system faults. For this to happen, your installer needs to be able to stay in business

Local solar companies, as a group, have the highest reviews score on our site and also have lower overheads than corporate installers, making them more likely to survive in the long term.

Delaware solar stats:

Companies reviewed


Avg rating of Delaware solar installers


Avg size of residential system


Avg price 10.15kW installed system

$20,184 ($1.99 per watt)
Delaware solar guide

Top 20 solar panels used in Delaware, 2021

Top solar loan providers

Installing a 11.5kW solar system in Delaware, 2021

Net cost of system


Average payback time

Annual power production

15,410 kWh

Levelized cost of solar energy

6¢ /kWh

If you don't get solar

23¢ /kWh

(25 year forecast of avg electric rates)

Savings over 25 years

$51,779 - $57,229
(Savings shown after repayments of capital)

Cash flow graph based on cash purchase of this 11.5kW system

Find the best companies in other states & cities


Solar panel cost in Delaware by system size

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 $2.89 $8,557
5kW $2.77 $10,264
6kW $2.65 $11,757
7kW $2.62 $13,577
8kW $2.66 $15,747
9kW $2.57 $17,096
10kW $2.54 $18,796
12kW $2.54 $22,555
15kW $2.41 $26,696

Going solar in Delaware

Check out all of the ways energy providers of Delaware 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: Net Metering

Showing 1 - 2 of 5

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.

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