Solar Panel Cost Guide in Diamond Bar, CA (Jan 2023)

  • Diamond Bar Solar Installation Cost: $5,446
  • 25-Year Savings: $13,323
  • Payback Period: 7.3 Years

See cost of a solar system near you:

By EcoWatch Local Advisors

Data Analysis: James Savino

Ranking Methodology: Karsten Neumeister

Updated January 20, 2023

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Average Cost of Solar Panels in Diamond Bar

Find out how much it might cost to install solar panels in Diamond Bar.

The national average cost of solar panels is $2.66 per watt, but in Diamond Bar it's $3 per watt. The average solar panel system size in Diamond Bar is around 2.9 kilowatts, meaning a cost of about $5,446 for a solar installation, or $4,030 after the 30% federal solar tax credit is applied.

These figures are just estimates, and how much solar costs for you will vary based on the amount of energy your home requires and what company you choose to go with. But, once you've paid the initial cost of installation, the savings for most homeowners is usually rewarding, with a net average savings of about $25,000 over 20 years on power bills.

For a free quote from a local solar company that has been pre-vetted by the EcoWatch team, click the button below.

Solar savings over time in Diamond Bar

Year Return on Investment
1 years $-4,696
3 years $-3,194
5 years $-1,693
7 years $-191
9 years $1,310
11 years $2,812
13 years $4,314
15 years $5,815
17 years $7,317
19 years $8,818
21 years $10,320
23 years $11,821
25 years $13,323

Top Solar Installers in Diamond Bar

Although you can install solar panels yourself, it involves extra effort and know-how. That's one of the reasons most homeowners choose a solar panel installer. The expertise that solar installers offer can be invaluable as well, especially if you don't quite know what kind of solar equipment you need.

If you're on the hunt for a solar installer in Diamond Bar, the EcoWatch team has compiled a list of our top suggestions here:

Best National Provider

SunPower

★★★★★
5.0

  • Most efficient panels on the market
  • National coverage
  • Cradle to Cradle sustainability certification
  • Great warranty coverage
  • Expensive
  • Customer service varies by local dealer

Best Regional Coverage

Momentum Solar

★★★★★
4.5

  • Great warranty coverage
  • Representatives are experts on local policies
  • Concierge service ensures steady communication
  • Slightly limited service offerings

Best Technology

Tesla Energy

★★★★★
4.5

  • Price-match guarantee
  • Sleek, efficient, and durable solar panels
  • Best solar battery on the market
  • Some reported issues with customer service
  • Customer service varies by local dealer

See all of the solar companies in Diamond Bar

Factors that Affect Solar Panel Costs in Diamond Bar

There are a number of criteria that can play into your total installation cost, such as the size of your system, the equipment you choose, your financing options and the specific company that does the installation.

Solar Equipment

Solar system size, which is measured in kilowatts, is one of the largest factors that determines the overall cost of installing solar panels. That's why it's important to accurately assess the size of the solar energy system needed for your home by figuring out your energy needs. Some solar panel brands — like Maxeon from SunPower — are more expensive upfront but also tend to offer higher efficiency. In a city like Diamond Bar, where sunlight is abundant, efficiency can quickly pay off. Plus, if you have a small roof or limited space for your panels, higher efficiency options will be more impactful. Additional equipment like electric vehicle chargers and solar batteries will also increase the cost.

Solar Financing Terms

Most solar companies in Diamond Bar provide solar loans, which reduce the initial cost of installing solar panels. You'll have to consider the long-term cost of financing options, including the total interest you'll pay over the length of the loan. If you can only get a high-interest loan, then your total can be hundreds or even thousands of dollars more than the original cost. Making a larger down payment or getting a solar loan with a low interest rate could reduce your costs significantly.

Solar Panel Installation Company

The solar installer you opt for to handle your switch to solar energy can play a role in your total costs. There are about 3 solar panel companies operating in Diamond Bar, and each can charge varying amounts for labor and equipment. Additionally, some companies in Diamond Bar know more about local solar incentives and can help you make good use of additional rebates or tax exemptions. Though, they may charge more for that service. Even if they cost more upfront, they could help you save more money in the long run.

Solar Panel Cost Data by System Size

System size Cost per system watt Solar system cost 25-Year savings Payback period
6 kW $2.84 $11,925 $27,602 7.5 years
8 kW $2.78 $15,594 $37,109 7.4 years
10 kW $2.73 $19,110 $46,769 7.3 years
12 kW $2.68 $22,473 $56,581 7.1 years
14 kW $2.62 $25,684 $66,546 7.0 years
16 kW $2.57 $28,741 $76,664 6.8 years
18 kW $2.51 $31,646 $86,935 6.7 years
20 kW $2.46 $34,398 $97,359 6.5 years

How to Save on Solar Panels

There are a lot of solar installers to choose from, all of which offer different warranties, solar panel models and price points. To help you find the right company for you, here are some tips to keep in mind:

  • Installation Process: When making the switch to solar, it's crucial to maintain an open line of communication with your solar installer. Confirm that you understand how the installation process will go and the completion timeline.
  • Solar Panel Brands: The brand of solar panel you need plays a role in which company you should opt for, since different companies have access to different panels.
  • Contract: When reading through your solar company's contract, ask questions about any terms you're not sure of and be sure you understand what happens in scenarios like a system component breaking or if the company goes out of business.
  • Reputation: Solar panel companies that have great reviews from their customers and that have been operating for many years in most cases provide quality solar panel installation and expertise.

Best National Provider

SunPower

★★★★★
5.0

  • Most efficient panels on the market
  • National coverage
  • Cradle to Cradle sustainability certification
  • Great warranty coverage
  • Expensive
  • Customer service varies by local dealer

Best Regional Coverage

Momentum Solar

★★★★★
4.5

  • Great warranty coverage
  • Representatives are experts on local policies
  • Concierge service ensures steady communication
  • Slightly limited service offerings

Best Technology

Tesla Energy

★★★★★
4.5

  • Price-match guarantee
  • Sleek, efficient, and durable solar panels
  • Best solar battery on the market
  • Some reported issues with customer service
  • Customer service varies by local dealer

EcoWatch's Diamond Bar, CA Solar Cost FAQs

How much does it cost to install solar panels in Diamond Bar?

This is a tough question to answer precisely, because the cost depends on many factors. Generally speaking, it costs about $13,650 for a 5-kW system and $27,300 for a 10-kW system after the ITC is applied. It will be more expensive if you want additional solar equipment or more efficient panels, or if you have above-average energy needs. On the flip side, you can spend less if you want a smaller solar panel system or cheaper solar panels.

Are solar panels free in Diamond Bar?

You can't get solar panels for free in Diamond Bar. However, you may still be able to install them on a lower budget. You can lease solar panels for a low upfront cost or, if you'd prefer to own your solar panels, you can finance them with a solar loan.

Can solar panels significantly reduce my power bills?

Solar panels can potentially eliminate your electricity bills depending on where you're located and the efficiency of your system. Even if it doesn't get rid of them completely, you can save a lot of money on your bills, about $1,317.57 per year.

What solar power system size is right for my home?

The exact number of solar panels you need depends on your household energy usage and how much sunlight your roof gets. You can take a look at your energy bills for the past year to get an idea of the solar system size you'll need. The average household has to get between 20 and 35 panels to account for their typical energy usage.

Our goal is to reach as many people as we can with sensible solutions like solar energy. Our team of full-time local researchers collects solar price and installation data for every city in America then compiles it to create these digestible city guides. If you want to read our solar expert's opinion on the top solar companies featured here, follow this link.

Company research was conducted by Melissa Smith and Karsten Neumeister. Local data analysis was conducted by James Savino. See something we missed or could do better? Email the editor.

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