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Solar Panels: A Personal Cost-Benefit Guide for Homeowners

published January 2025

Weighing the Financial and Environmental Benefits of Residential Solar

Here at Wheeler Electric, we get a lot of questions about the pros and cons of installing residential solar panels. After countless conversations, it is clear that the answer to the question, “Are solar panels worth the investment?” depends on how you define “worth.”


If your primary goal is reducing your environmental impact, we would argue that the answer is a resounding yes. Solar panels offer significant long-term benefits by cutting greenhouse gas emissions and reducing reliance on fossil fuels. However, if your focus is financial, the answer becomes more complex and depends on factors such as your energy usage, upfront costs, and available incentives.

In this post, we’ll break down the key considerations—both financial and environmental—to help you decide if solar panels are the right choice for your home.

Our goal is to help you gather the information you need to make the right choice for you, and we are always here to help answer any questions about your specific circumstances. No two households have the same needs or priorities, so it is impossible to provide a one-size-fits-all answer.
 

Environmental Benefits: A Greener Energy Choice

While the financial benefits are an important consideration, many homeowners are motivated to install solar panels for environmental reasons. Solar energy reduces reliance on electricity generated from fossil fuels, lowering carbon emissions.

In provinces like Alberta and Saskatchewan, where electricity is primarily from coal and natural gas, solar panels significantly reduce carbon emissions. In provinces like Nova Scotia and New Brunswick, which rely on a mix of hydro, wind, nuclear, and fossil fuels, solar energy’s environmental impact is still positive, though less pronounced.

Studies show that residential solar systems generate 18% to 59% fewer carbon emissions during production and installation than large-scale solar farms. This is because rooftop solar systems use existing infrastructure (your roof), whereas large solar farms require emissions-heavy materials like concrete and steel.

Over the lifetime of a residential solar system, the environmental impact is overwhelmingly positive. The energy used to produce and install solar panels is typically recouped within two years, making the system effectively carbon-neutral afterward. This makes solar panels a compelling choice for environmentally conscious homeowners.

Solar Panel Costs: The Upfront Investment

One of the most significant barriers to adopting solar energy is the upfront cost. While solar panel prices have decreased considerably over the past decade, they still require a substantial initial investment. 

According to the most current data shared by provincial power companies, the cost of installing an average 5kW to 7.5 kW solar system varies between $17,000 (NBPower) and $22,500 (BCHydro).  However, our experience suggests that these costs and sizes are not accurate.  In NB and NS our most recent installations have been no smaller than 9kW and sometimes in excess of 12Kw.  A 12kW in 2025 will likely have an average cost of about $40,000 with a number of variables that might increase or decrease that amount.

For homeowners in Canada, incentives such as the Canada Greener Homes Loan or the NBPower Total Home Energy Savings Program can help alleviate some of the upfront cost, but these grants and loans don’t eliminate the need for a significant financial outlay. A well-sized solar system will eventually pay for itself through energy savings, but understanding the timeline for financial return is crucial before making a decision.

The Payback Period: When Will You Start Saving?

The main financial benefit of solar panels comes from reducing or eliminating your electricity bill. Once your system is paid off, any energy you generate is essentially free, which can lead to significant savings over the lifetime of the panels. However, the actual savings depend on your home’s energy needs, the size of your solar array, and how much sunshine you receive annually.

One of the most common questions is: How long will it take for my investment to pay off? This depends on several factors, including:

  • Monthly power usage (including future demand increases)
  • Local electricity costs (and predicted future increases)
  • Size of the solar system
  • Percentage of your power needs covered by the solar system, which depends on the number of panels and their production capacity based on your location’s sun exposure and roof angle

When we provide a quote for solar panel installation, we include a detailed report tailored to your circumstances (see Figure A for an example).

It’s important to note that these estimates assume a gradual increase in electricity prices over time. If electricity rates rise faster than expected, your payback period could be shorter, and your long-term savings more substantial.

Net Metering: A Key Factor in Your Savings

In both Nova Scotia and New Brunswick, homeowners can benefit from net metering, which allows you to "store" excess electricity your solar panels produce by sending it back to the grid. This excess power is credited to your account and can offset the electricity you pull from the grid when your panels aren’t producing enough, such as during winter or cloudy days.

However, it’s important to understand that net metering does not allow you to sell excess electricity for profit. Instead, you’re credited for the electricity you generate, up to the amount of your own consumption. Additionally, credits typically expire annually– in NB, credits expire on March 31

This makes it critical to size your system properly: not too small to meet your needs, but not so large that you generate unusable excess electricity. Of course, some homeowners may still prefer generating excess electricity, knowing that it contributes to greener energy in their province.

Additional Considerations and Costs

Incentives and Rebates 

  • There are government incentives designed to make solar panels more financially viable. Some provinces and municipalities also offer their own incentives or rebates, so it’s worth checking with your local utility provider to see what programs might be available in your area. Keep in mind, however, that incentives can change over time, so it’s a good idea to act quickly if you find a program that works for you.
  • The Canada Greener Homes Loan offers interest-free loans of up to $40,000 for home energy retrofits, including solar installations.  This program reportedly has limited funds, and may come to an end as early as May or June 2025.

Quality Products

Every solar system consists of both solar panels and inverters, and each has a range of options to choose from. The quality of these components impacts not only the upfront cost but also the efficiency, long-term performance, and environmental footprint of your solar project.

Solar Panel Quality

The quality of solar panels is determined by several factors, including the materials used, technology, panel efficiency, and the manufacturer's reputation. When selecting panels, consider the following:

  • Initial cost: The price you pay upfront for the panels.
  • Long-term performance: How efficiently the panels will continue to generate power over their lifespan.
  • Warranty: Most panels come with a performance warranty (typically 20-25 years) and a product warranty (10-15 years). A longer warranty suggests greater confidence in the panel’s durability.
  • Degradation rate: Solar panels degrade over time, which means they lose a small percentage of their efficiency each year. A high-quality panel will typically lose less than 0.5% of its efficiency annually, helping to ensure long-term reliability.
  • Manufacturer Reputation: It’s important to choose a manufacturer with a solid reputation and financial stability. A reputable manufacturer is more likely to provide reliable warranty support and stand behind their products, ensuring smoother warranty claims in the future.

Inverter Quality

The inverter plays a crucial role in converting the DC power generated by the solar panels into AC power for your home. Key considerations for inverter quality include:

  • Efficient design: A quality inverter should convert DC to AC power efficiently, with minimal energy loss.
  • Solid cooling mechanisms: Since inverters generate heat, robust cooling mechanisms are important to prevent overheating and ensure long-term reliability.
  • Expected lifespan: A high-quality inverter typically lasts between 10-15 years, though some models may exceed this lifespan with proper care.
  • Warranty: A solid warranty (usually 10-12 years) suggests that the manufacturer stands behind the durability and reliability of their product.
  • Manufacturer support: Good customer service and post-purchase support ensure any issues are addressed promptly.

Other Considerations

  • Maintenance: Maintenance is minimal—rain usually keeps panels clean and there are no moving parts that can wear out—but periodic inspections ensure optimal performance.
  • Roof Condition: If your roof is old or in poor condition, it may need replacement before solar installation.
  • Roof Longevity: Solar panels can extend roof life by protecting it from sun and rain exposure.
  • Roof Type: Avoid scalloped-style steel roofs if planning future solar installations, as no compatible racking systems currently exist.
  • Insurance: Check if solar panels increase your home insurance premiums and shop around if needed.
  • Resale Value: There’s limited data on whether solar panels increase home resale value, so consider this if you plan to move soon.

Working with an experienced solar contractor is essential. They can help you design a system that balances your energy needs with what your panels are likely to produce, taking into account both seasonal variations in sunlight and future changes to your household’s electricity usage.

Is Solar Right for You?

Ultimately, whether solar panels are “worth it” depends on your personal goals and circumstances. For homeowners focused on the financial benefits, carefully calculate the payback period and potential savings. For those who are more concerned with the environmental impact, solar panels offer clear benefits by reducing reliance on fossil fuels and cutting emissions.

In Nova Scotia and New Brunswick, solar panels can be a wise investment, particularly for homeowners who plan to stay in their homes long enough to recoup the initial costs. By choosing solar energy, you’re not only contributing to a more sustainable future but also potentially protecting yourself from rising electricity costs.

As with any major investment, the decision to install solar panels should be made after careful consideration. Whether you’re looking to save on your electricity bills, reduce your carbon footprint, or a combination of both, solar energy can offer a bright solution to meet your needs.

Figure A: An example from a Sackville, NB customer installing a rooftop system in 2025. Due to roof angle and size, the system will produce 56% of their current annual electricity use, with an expected payoff date of 16 years. However, from year one, they’ll see an average savings of $140 per month on their NB Power bill. (Source: Wheeler Electric Inc)

  • Your Solution: The agreed-upon system to be installed.
    Your Solution: The agreed-upon system to be installed.
  • The current average monthly electricity use (grey) compared to the expected energy production from solar panels (red)
    The current average monthly electricity use (grey) compared to the expected energy production from solar panels (red)
  • Monthly and Cumulative bill savings for the system over 20 years.  This calculation considers a 3% increase in electricity costs in NB.
    Monthly and Cumulative bill savings for the system over 20 years. This calculation considers a 3% increase in electricity costs in NB.
  • In the next 20 years, if energy costs do not rise more than 3% annually, it will take 16 years to pay off the system.
    In the next 20 years, if energy costs do not rise more than 3% annually, it will take 16 years to pay off the system.
  • The estimated environmental benefits of this system.
    The estimated environmental benefits of this system.

Sources and Resources:

BC Hydro. "Solar Panels." Accessed January 5, 2025. https://www.bchydro.com/powersmart/residential/tips-technologies/solar-panels.html

Chung, Emily. "Is It Worth It to Put Solar Panels on Your Home?" CBC News, August 28, 2024. https://www.cbc.ca/news/science/rooftop-solar-cost-benefits-1.7303406.

Natural Resources Canada. "Canada Greener Homes Initiative." Accessed January 5, 2025. https://natural-resources.canada.ca/energy-efficiency/homes/canada-greener-homes-initiative/canada-greener-homes-loan/24286.

NB Power. "Net Metering." Accessed January 5, 2025. https://www.nbpower.com/en/products-services/net-metering/.

NB Power and SaveEnergyNB. "Total Home Energy Savings Program." Accessed January 5, 2025. https://www.saveenergynb.ca/en/save-energy/residential/total-home-energy-savings-program/

Renewable Energy Hub. "Solar Photovoltaics - Cradle-to-Grave Analysis and Environmental Cost 2025." Accessed January 5, 2025. https://www.renewableenergyhub.co.uk/main/solar-panels/solar-panels-carbon-analysis.

Roy, R., and J.M. Pearce. "Is Small or Big Solar Better for the Environment? Comparative Life Cycle Assessment of Solar Photovoltaic Rooftop vs. Ground-Mounted Systems." International Journal of Life Cycle Assessment 29 (2024): 516–536. https://doi.org/10.1007/s11367-023-02254-x.