Solar Panel Cost Guide in Waltham, MA (Sep 2022)

  • Waltham Solar Installation Cost: $9,179
  • 25-Year Savings: $17,545
  • Payback Period: 8.6 Years

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EcoWatch Local Advisors

By EcoWatch Local Advisors

Updated 9/16/2022

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Average Cost of Solar Panels in Waltham

We go over average solar pricing in Waltham.

In Waltham, solar panels cost about $3 per watt on average. To account for the typical energy needs of the average home in Waltham, most homeowners require a 4.5-kilowatt system. Using the per-watt figure above, a solar installation costs around $9,179, or $6,792 after the federal solar tax credit of 30% is applied.

The true cost of your system can be above or below the average in Waltham based on a few factors, such as the kind of solar panels you choose and the solar company you hire. Even with the high upfront cost, the average Waltham homeowner can save around $23,000 on their power bills over 20 years, which is one of the benefits of solar.

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 Waltham

Year Return on Investment
1 years $-8,110
3 years $-5,972
5 years $-3,834
7 years $-1,696
9 years $442
11 years $2,580
13 years $4,718
15 years $6,855
17 years $8,993
19 years $11,131
21 years $13,269
23 years $15,407
25 years $17,545

Top Solar Installers in Waltham

Although it's possible to install solar panels yourself, it requires extra effort and know-how. Because of that, most people choose a solar panel installer. Also, companies with an outstanding reputation that cost more upfront could actually save you money in the long term due to their warranties, repair services and expert design.

If you're searching for a solar installer in Waltham, the EcoWatch team has put together 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

The Green Panel

★★★★★
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 Waltham

Factors that Affect Solar Panel Costs in Waltham

For many Waltham homeowners, the decision to install solar panels rests on cost. However, the range of solar installation costs can be quite wide in Waltham, with typical prices between $20,000 to $40,000. There are various factors that greatly influence the price you'll pay, which we'll go over below.

Solar Equipment Size

One of the most important factors to consider when it comes to the cost of going solar is the size of the solar system, which is measured in kilowatts (kW). The more energy your household uses, the larger your system will likely need to be. You can expect to spend around $2,940 per kilowatt in Waltham. Some solar panel brands — like Maxeon from SunPower — cost more upfront but also tend to offer higher efficiency. In a city like Waltham, where sunlight is relatively abundant, efficiency can quickly pay off. In addition, if you have a small roof or you don't have a lot of 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

For some homeowners, paying for solar panels out of pocket can be difficult. Solar loans are provided by most installers in Waltham, which can bring down, or in some cases totally eliminate, your upfront costs to make solar more accessible. You'll have to consider the long-term cost of financing options, including the amount of 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 principal cost. Making a larger down payment or securing a solar loan with a low interest rate could reduce your costs remarkably.

Solar Panel Installation Company

The solar installer you choose to handle your switch to renewable energy can play a role in your total costs. There are about 3 solar installation companies operating in Waltham, and each can charge varying amounts for labor and equipment. Additionally, some companies in Waltham have more knowledge 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 $3.06 $12,842 $23,114 8.9 years
8 kW $3.00 $16,793 $31,147 8.8 years
10 kW $2.94 $20,580 $39,346 8.6 years
12 kW $2.88 $24,202 $47,709 8.4 years
14 kW $2.82 $27,660 $56,236 8.2 years
16 kW $2.76 $30,952 $64,929 8.1 years
18 kW $2.70 $34,080 $73,786 7.9 years
20 kW $2.65 $37,044 $82,807 7.7 years

Solar Incentives in Waltham

Name Residential Renewable Energy Income Tax Credit
Incentive Amount 15%
More Info Click here

Name Renewable Energy Equipment Sales Tax Exemption
Incentive Amount 100% exemption
Website Visit here
More Info Click here

Name Alternative Energy and Energy Conservation Patent Income Tax Deduction (Personal)
Incentive Amount 100% deduction
More Info Click here

Name Renewable Energy Property Tax Exemption
Website Visit here
More Info Click here

Name Cape Light Compact- Residential Energy Efficiency Rebate Program
Website Visit here
More Info Click here

Name Solar Massachusetts Renewable Target (SMART) Program
Website Visit here
More Info Click here

Name Mass Solar Loan Program
Website Visit here
More Info Click here

Name Residential and Small-Scale Ground-Source Heat Pump Rebate Program
Website Visit here
More Info Click here

Name Commonwealth Woodstove Change-Out Program
Website Visit here
More Info Click here

Name Local Option - Energy Revolving Loan Fund
More Info Click here

Name Solar Renewable Energy Certificates (SREC-II)
Website Visit here
More Info Click here

Name Residential Renewable Energy Tax Credit
Website Visit here
More Info Click here

How to Save on Solar Panels

The company that does your solar panel installation will affect the warranties and brands you have access to, and it will also have an impact on your total cost. Since selecting a company can be a tough decision, we have some tips to help you, such as:

  • Solar Panel Brands: Homeowners will have different preferences for panels depending on their roof configurations and energy needs. Although there are many options for which type of solar panel you can get, not every company will have the exact one you may want or need, so be sure to ask for their list of offerings before deciding.
  • Reputation: Make sure your solar installer has a good reputation by confirming it has certifications and licenses, checking how long it's been in business and reading reviews by past customers and solar experts like EcoWatch.
  • Contract: It's important to look over your solar installer's contract well to understand what services they will provide, what the warranty covers and what you can expect about your solar system's energy production.
  • Installation Process: An important thing to understand when going solar is the installation process itself. Be sure to align on any details you should know with your solar installer, such as what permits you should acquire and how long the project will take.

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

The Green Panel

★★★★★
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 Waltham, MA Solar Cost FAQs

What is the average cost of installing solar panels in Waltham?

The average cost of solar panels in Waltham is about $14,700 for a 5-kW system and $29,400 for a 10-kW system before the ITC, but the actual cost will depend on stuff such as the type of solar panels you want, what size system you need and how much energy you consume.

Is it better to lease or buy solar panels in Waltham?

Leasing solar panels can be an option if you are unable to pay upfront or secure a solar loan, but since you don't own the system, you can't take advantage of many solar incentives. Also your property value won't increase, so you'll have less savings over time. If you can afford to buy a solar system upfront, then buying is the better option if you want the most financial benefits from going solar.

Does Waltham have a net metering program?

Each state has some form of net metering programs except Tennessee, South Dakota and Alabama currently. Some states let you sell power back to the grid, but others just give you credit toward your future utility bills.

How many solar panels do I need to power my home?

The exact number of solar panels you need depends on your household energy needs and the average daily 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 cover 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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