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Going solar in old age

Is It Worth Going Solar in Your Golden Years? A Retired NASA Scientist Weighs In

By Solar Panels for Home No Comments

For many homeowners, solar panels are a long-term investment in energy cost savings. On average, it takes between 7-10 years to break-even, leaving decades to accumulate savings.

But what if you’re not sure if you’ll be in your home for 7-10 years?

Going solar in your golden years can be daunting, but it can also be a way to free up fixed income, increase your home value, and add to your legacy.

In this article, we’ll explore the benefits and road bumps of going solar later in life, and recount the experience of retired NASA scientist Lenny Pfister, who recently went solar at 72 years young.

Is it worth going solar in your 70’s?

For most homeowners, the measure of whether it’s “worth it” to go solar is how much money they will save in electricity costs. That’s especially true for retired homeowners living on fixed income.

Rising electricity prices pose a serious problem to people living on fixed income. Typically, the cost of electricity rises 3-5% per year. However, in October 2022, the average US electricity price increased nearly 17% year-over-year – the largest one-year increase since 1981.

Here’s how this one-year increase translates into monthly costs:

Electricity source Rate in September 2021 (cents/kWh) Cost per month in 2021 (833 kWh) Rate in September 2022 (cents/kWh) Cost per month in 2022 (833 kWh) Year-over-year bill change
Grid – US average 14.14 $118 16.32 $136 $18
Grid – California 23.49 $196 26.6 $221 $25
Grid – New York State 20.66 $172 23.97 $200 $28
Grid – Florida 12.34 $103 14.59 $122 $19

Based on grid electricity prices and average monthly consumption figures from the US Energy Information Agency.

Over the course of a year, this adds up to an extra $216-336. Younger homeowners still in the workforce may be able to keep up as their income increases, but that’s typically not an option for retirees and older adults.

It’s also worth mentioning that utility bills vary from month-to-month, which can make it very hard to budget a fixed income

Going solar is a way of locking in a lower, fixed monthly payment for your electricity. In fact, designing a system to your needs and selecting a financing option puts you control of price you pay for electricity — not the utility.

Related reading: The Pros and Cons of Going Solar

“I better have solar because electricity is very expensive”

Rising electricity prices is what drove Lenny Pfister, a retired NASA scientist of over 40 years, to put a solar system on his home at the age of 72.

Pfister said the 1960’s homes in his area of Northern California historically haven’t had air conditioning. However, living standards have changed and so has the climate, bringing more instances of hot weather.

“So, I decided to get AC and, I thought, ‘If I really want to go green, I should be using electric heat with a heat pump, too,’” Pfister said. “So, I knew my electricity usage would increase. And if I’m going to do that at a reasonable rate, I better have solar because electricity is very expensive in this state.”

Pfister was also motivated by the changing net metering policy in California, know as NEM 3.0, which will be less favorable to solar owners in the future. Learn more about the new policy here and how to be grandfathered into the current one here.

What about solar scams?

We will be the first to admit that the solar industry is plagued with scams and sleazy installers. And to be frank, those dirty rascals tend to target older homeowners.

So how can you tell a reputable installer from a scam?

Well, Electrum – the parent company of Solar.com – was founded for the exact purpose of weeding out scammy solar companies. We rigorously vet installers before allowing them to join our network and won’t even consider them if they don’t have:

  • Certification and insurance
  • 3+ years of experience
  • Solid financial standing
  • An excellent track record of customer experience

This not only takes power away from scammers; it fosters healthy competition between local installers that leads to savings for homeowners.

But don’t just take our word for it.

“It’s reasonable to go through a company like yours,” Pfister said. “I was referred to Electrum by my utility because you do vet the solar companies in some way. It’s actually competitive because I got a bid from someone else outside the system and you actually had better than the price.”

When will my solar savings kick in?

Going solar is a way of reducing and stabilizing your monthly electricity costs. Exactly when and how much you save by going solar largely depends on how you choose to finance your system.

There are two main ways to finance a solar system: Cash or solar loan.

Paying in cash maximizes your long-term savings, as you spend less money on interest and loan fees. But taking out a solar loan can lead to quicker – often instant – savings, as shown below in a chart for a typical California homeowner’s option.

going solar in old age chart of loan options vs utility costs

All three solar financing options provide savings, but at different times.

Here are the takeaways:

  • A 20-year loan can provide instant savings as the monthly payments are often lower than the monthly electricity bills they replace. However, longer loans tend to accumlate more interest
  • The payments on a 12-year loan may not be lower than utility payments right off the bat. However, after a few years of utility rate increases, they become the path to energy cost savings
  • A cash purchase requires the largest upfront investment, but it is most cost-effective option in the long run

So, the big question becomes: “How long do you plan on being in your house?”

If the answer is less than 10 years, a longer solar loan is usually best to free up fixed income right away.

If it’s more than 10 years, a shorter loan or a cash purchase can increase your total savings over the life of the solar system.

Now, you’re probably thinking, “What if I leave my house before my solar loan is paid off or before I see a return on investment for a cash purchase?”

Wonderful question — let’s dive in!

What if I move before my solar system is paid off?

Given solar panels are typically warrantied for 25 years and last much longer, it’s very common for older homeowners to leave their house before their system is paid off or they see a return on investment.

This is something Lenny Pfister pondered while exploring his solar options.

“I did wonder how long I’m going to be in the house,” Pfister said. “I figure I’ll be in the house probably for 5-10 years. I can get pretty close to paying it back and I’m guessing that it adds some value to your home.”

As a matter of fact, Pfister was correct about added home value. Studies by Zillow and the Lawrence Berkeley National Laboratory have shown that solar panels increase your home value by around 4.1% or $4,000 per kW of capacity installed (depending on who you ask). Solar panels can also help your home sell faster, as today’s buyers value energy efficiency and green home features.

So, if you need to sell your home before your solar system is paid off, the buyer essentially pays for it in the sale – just like they would an air conditioner, furnace, and the house itself!

Then, you can use the additional proceeds from the home sale to pay off your solar loan, and the solar system stays with the new owners to help them reduce their energy costs.

Added home value allows you to enjoy the instant savings of a long-term solar loan without the worry of making payments for 15, 20, or even 25 years.

Leaving a legacy

In addition to energy cost savings, there is another major reason to go solar: To try to leave the world in better shape than you found it.

Pfister said his decision to go solar was about 50% financial and 50% environmental.

“For what it’s worth, the science that I was studying at NASA was Earth science,” Pfister said. “I just figured it was time to (go solar), and I had the money to do it. It’s basically that I tried to put my money where my mouth was.”

In the last few decades, solar has emerged among the cleanest and cheapest energy sources, with the added bonus that it’s accessible by the general public. Rooftop solar is especially unique because it requires zero extra land use and can help create a more resilient and affordable electricity grid for everyone – especially when paired with battery storage.

In other words, a home solar system (and the energy cost savings it provides) is the perfect gift to leave behind for future generations that will face the most severe consequences of climate change.

Going solar with Electrum and solar.com

The beauty of going solar is it gives you control over your monthly electricity costs, which is especially valuable for older homeowners on fixed income.

Even if you don’t live in your house long enough to pay off the system, most homeowners recoup the cost of the system through added home value when they sell.

Finally, rooftop solar is a clean, cheap energy source and the perfect gift to leave behind for future generations.

Connect with an Energy Advisor to learn more and compare multiple quotes from vetted installers.

 

best roof for solar panels

What Is the Best Roof Design for Solar Panels and What If Mine’s Not Perfect?

By Solar Panels for Home, Solar Panel Installation Process No Comments

If you’re looking to go solar at home, chances are you’re going to put those panels up on your roof. Ground-mounted solar is a great option, but it’s uncommon to have enough space to put up a decent-sized system in your yard. So that begs the question, what is the best roof design for solar panels?

Let’s get this out of the way first: Almost no one has the perfect roof for solar. Although some roof shapes and angles are better for solar production than others, solar panels are extremely versatile and can provide energy cost savings and carbon footprint reduction in a wide range of configurations.

In other words: Don’t let perfect be the enemy of good.

In this article, we’ll explore that makes a good roof for solar panels and some frequently asked questions.

Connect with an Energy Advisor to see how much sun your roof gets.

6 roof design traits that effect your solar production

There are several roof characteristics that effect how much your solar panels will produce. Here is the top six:

Orientation

Also known as azimuth, orientation is the direction your roof faces. For North American solar systems, the best roof design for solar panels is one with a large, unshaded south face (an azimuth of 180 degrees).

Not having a south-facing roof is not a deal-breaker. However, many roofs are multi-faceted, and if your roof is mostly west- and east-facing, you’re likely to only see a 10-20 percent reduction in the amount of energy you’re generating.

There’s been an ongoing debate about south-facing vs. west-facing panels over the last couple of years. While south-facing panels will generate the most energy, west-facing panels generate the most energy when demand is highest. That’s why some big proponents, including the California Energy Commission, encourage builders to include some west-facing solar panels in their developments.

In the end, south is best, but west and east are also good; having panels facing south and west will help you generate energy throughout the day.

Size

Along with orientation, the size of your roof will determine how many solar panels you can install. The average US home solar system size is 5 kilowatts or 12-13 panels with a rating of 400 Watts. With solar panels requiring about 15 square feet each, you need about 200 square feet of (south- or west-facing) roof space to fit 13 panels on your roof.

Shade

Big surprise: Solar panels only work when the sun is shining directly on them. If you’re surrounded by tall trees and your roof and yard are shaded most of the day, your choices are limited to either:

  • Taking down trees
  • Buying clean energy from a community solar system instead
  • Opting for a clean energy mix from your utility (if available)

It’s important to note that shading doesn’t always come from trees and outside objects — sometimes roofs can shade themselves. The best roof design for solar panels is one with minimal tiers and overhangs that could cause shading.

Material

What is your roof made of? The most common type of roofing material is asphalt shingles, but solar installers can put panels on just about any of the most common types of roofing materials, including tile, metal, slate and even wood shingle.

Some roof types are more difficult to install on than others, and if your roof is made of trickier materials it may add to the cost of your solar installation.

Age

More important than the roof type you have is how old your roof is. According to a study by the National Home Builders Association, an asphalt shingle roof should last for around 20 years, while slate, copper, tile, and metal roofs can last 50 years or more. Meanwhile, most home solar systems are guaranteed to last for 25 years, and will likely last much longer.

So if your roof will need to be replaced in the next 10 years or less, consider doing so before your solar panels are installed. You can always replace the roof after your panels are in place, but it involves removing the panels and racks, replacing the roof, and then re-installing the panels, which adds more cost to the project.

Pitch

The slope of your roof isn’t as important as the orientation, but it can affect your solar energy output. The ideal roof angle for power generation is about 30 degrees, but roofs that are too steep make installation difficult, while flat roofs mean that you can set the panels at just the right angle, but you’ll be paying extra for the required racking.

As a rule of thumb, your panels should be tilted at about the degrees as your latitude. So if you live in Los Angeles at 34 degrees north, then your panels should face south and be tilted about 34 degrees.

best roof for solar panels

Related Reading: How To Choose Solar Panels for Your Home

What if I don’t have the best roof design for solar panels?

Not everybody has a large, unshaded, south-facing roof. So what happens if your roof design is less than perfect for solar panels?

In these scenarios, there are two ways to increase your solar output:

Use panels with a higher power rating – Solar panels are rated from 250 to 450 based on how many Watts of DC electricity they can produce per hour. So, if you don’t have enough space for 16 250W panels, then you can achieve the same output with 10 400W panels.

Increase the number of panels – If you have limited sun exposure due to shading, pitch, orientation, or location you can simply add more panels. For example, Los Angeles averages around 6 peak sun hours per day while New York City averages around 4.5. That means it would require 15 panels to achieve 27,000 kWh per day in New York City, and around 11 panels to achieve 27,000 kWh per day in Los Angeles.

In both cases, you can expect your project to cost a little more than if you had a perfect roof for solar. However, the solar panels themselves make up a small fraction of your project cost, and adding or upgrading will have little effect on your energy cost savings over 25+ years.

 

 

Bottom line: There is no perfect roof

Although it’s tempting to want the best roof design for solar panels, solar panels are extremely versatile and can provide energy cost savings and clean energy in many applications.

Between the falling costs of solar equipment and the 30% federal solar tax credit, there’s never been a better time to go solar. Get started by comparing multiple quotes from vetted local installers.

Best roof design for solar panels FAQs

What type of roof is best for solar panels?

A south-facing composite asphalt shingle roof with plenty of space is typically considered the best roof design for solar panels. However, solar systems can be very versatile and provide clean energy and cost savings in a wide variety of applications.

What is the best roof design for solar?

It may sound simple, but a large square roof with a standard pitch between 20-30 degrees is ideal for a simple solar system. Roofs with lots of tiers with little extended space can create challenges for designers and installers.

What type of roof is not good for solar panels?

We hate to be the bearer of bad news, but if you have a slate or wood roof, your options are limited. Many solar companies will refuse to install on these materials, which can limit your options.

Some work-arounds include re-roofing with a new material or installing the system on the ground.

What if my roof is old?

Most roofs must be replaced at some point, but you have a couple options when assessing your roofs current state before going solar. If your roof is too old, some solar installers will replace your roof as part of the same project, which can help you save by combining the projects.

If your roof is getting old but not quite at point of replacing, it may be worthwhile to install the solar panels knowing you’ll need a roof replacement at some point down the road. In this case, re-roofing requires the added cost of having your solar company un-install and re-install the panels.

Solar panels can help aid the longevity of your roof, because they help protect against a lot of nature’s elements.

Will my roof have issues with leaks?

Leaks after solar installation are extremely rare. Yet, if they do happen it’s important to be covered by a warranty. Good installers offer extended warranties on workmanship, which means you won’t have to worry about being on the hook for any issues that could arise during an install.

If your roof seems like a fit, use Solar.com to receive free, no-obligation bids on a solar installation for your home.