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5 year study by NAIT shows angle of panel is more significant than snowfall in Northern Alberta

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Study looks at impact of snow and angle of solar panels Old Man Winter takes a lot of flak in Alberta for everything from costly heating bills to frozen car batteries. But when it comes to the impact on solar panels, winter gets an unjustified bad rap.
A five-year study led by NAIT’s Alternative Energy Technology program found that snowfall on photovoltaic solar panels results in about a 3% energy loss. That’s significantly less than the 20% drain that industry had traditionally estimated despite a lack of data.
Tim Matthews, a technologist and one of the leads on the study, says the results will improve modelling used to estimate solar energy production that determines return on investment. Ultimately, that means a win for consumers.
NAIT launched the reference array snow study in 2012 with the City of Edmonton and Solar Energy Society of
Alberta. A system of 12 solar modules was installed atop the Shaw Theatre on Main Campus to not only measure the impact of snow on the system, but also how the tilt of each module affects energy production.
“The rule of thumb throughout industry was to design a system as if it had no snow and then wipe 20% of energy production off the slate – we’re going to lose 20% because we’re in Canada,” says Matthews. “Everybody was terrified of underestimating the impact of snow and latitude [on energy production].”
They found that the angle of the solar panels has a far greater impact on energy production than snowfall. Solar modules were fixed at six different angles – 14, 18, 27, 45, 53 and 90 degrees – which represent roof pitches commonly found on commercial buildings and homes. Six modules were cleared of snow every day, while the remaining six served as a control.
The least efficient was the module set at 90 degrees, like a wall-mount system, which saw a 24% loss in performance. The
module tilted to 53 degrees was most efficient, which confirmed an industry standard that solar systems are optimized when tilted to the equivalent of a city’s latitude.
The ideal angle for maximum production with snow accumulation was 45 degrees.
Matthews cautions that even five years worth of data is a small window when dealing with fluctuating variables such as
weather. But for a homeowner or business who already has historic data on their energy consumption, the tilt and snow impact clear up what had been a cloudy picture in predicting the cost-benefit of solar.
“Having this information raises the level of precision when it comes to engineering, design and production modelling,” says
Matthews. “A company that’s doing solar installation and design can go to a client and say, ‘This is precise. You can take this to the bank.’”
Crunching five years of data The work of crunching through all the data fell to students (and now grads of the class of ’18) Christian Brown and Jackson Belley as the basis of their final course project, or capstone.
That’s no mean feat considering energy performance data was collected from all 12 solar modules every five minutes every
day for five years – enough to fill 6,000 spreadsheet files.
“It was an insane amount of data,” says Brown. “That was not quite half, maybe the first third of the project. Months of work. It was a lot of learning.”
After five years of getting up at all hours to clear snow from the reference array – including Christmas – Matthews is glad
to be rid of that daily chore. For anyone who operates a solar system, he cautions that snow should only be cleared if it’s
safe to do so, such as on a flat commercial roof.
“Should you clean the ones on your [pitched] roof? Heck no,” he says. Nor does he recommend asking a contractor to
remove it. It’s just not worth it for the minimal gain in power efficiency from a snow-free solar system.
“Our recommendation is that it makes no sense. One hour of time from a professional or an apprentice is just not worth
it.”
Data was gradually exported by day, month, season and year, making it more digestible and user-friendly for industry,
government and institutions, but also the schools and not-for-profits, who are interested in the information.
The study’s interim findings are available online, while the students’ final report with datasets will be published on the
Alternative Energy Technology program page this fall. It’s expected to be a hot commodity. (Anyone can request the data now).
“The amount of requests that we get [for the data], it’s obvious people are interested and they want to know how does snow
affect solar modules,” says Belley.
Brown adds it’s a pretty cool feeling to work on a class assignment that has a major real-world impact. “The idea of solar won’t be as much of a gamble any more.”
Plans are also in the works to submit the findings for peer review and publication in a scientific journal.
After reading this report and remembering that both the Province of Alberta and the City of Red Deer are looking into a program that would pay for the program and be billed via your property taxes over 10 years.
The province and the city were very much forward thinking, I would offer and if snow loses only 3 % of power it does make more sense. Right?

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Energy

Guilbeault’s Emissions Obsession: Ten Reasons to Call Time Out on Canada’s CO2 Crusade

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From the Frontier Centre for Public Policy

By Pierre Gilbert

Before we collectively devastate our economies, further reduce our birth rates in a misguided attempt to save the planet, squander trillions of dollars, and halt human progress by making energy both scarce and exorbitantly expensive, it’s crucial to remember that human-induced climate change is not a settled fact, but rather a hypothesis largely unsupported by the history of the climate but supported by climate models that have considerable error built into them.

Canadian Environment Minister Steven Guilbeault recently announced a plan requiring the oil and gas industry to cut CO2 emissions by more than one-third from 2019 levels by 2030. This deadline might seem far off, but it also stipulates that at least 20 percent of light-duty vehicle sales must be zero-emission by 2026, a deadline that’s just around the corner. This is all part of Guilbeault’s strategy to achieve the ambitious net-zero emissions target by 2050.

There are at least ten reasons suggesting that this plan is absurd.

  1. CO2 is Not a Pollutant.

Carbon dioxide is, in fact, a fertilizer crucial for the growth of all vegetation. Higher concentrations of CO2 result in increased crop yields and more productive forests. Healthier forests, in turn, absorb more CO2, providing oxygen in exchange which is essential for the survival of all living organisms including humans.

  1. CO2 is a Trace Gas

During my extensive career as a university professor, I encountered numerous students eager to support policies that might devastate the livelihoods of thousands of men and women who depend on the oil and gas industry, believing these sacrifices would save the planet. Their near-religious zeal was only matched by their stunning ignorance of basic CO2 facts.

Class surveys I conducted showed that almost one hundred percent of my students were unaware that CO2 is a trace gas, with its atmospheric concentration having varied significantly over centuries and even seasonally. Currently, CO2 represents about 0.04% of the atmospheric gases, or approximately 420 parts per million (ppm). By comparison, nitrogen makes up about 78%, and oxygen around 21%.

The best estimates suggest that human activities contribute roughly 4% of the total annual CO2 emissions (16 ppm). Canada’s share of global emissions is approximately 1.5% (0.24 ppm), essentially a rounding error in the total calculation.

  1. Why Alberta and Not China?

It is no secret that Guilbeault harbours a special animosity towards Alberta. His energy regulations appear designed to severely impact Alberta’s economy despite the province being a relatively minor player on the global stage. In contrast, China, by far the largest contributor to global CO2 emissions, builds two new coal-powered (dirty) power plants every week and is the primary beneficiary of Canada’s coal exports. Why doesn’t Guilbeault turn his scornful gaze towards the People’s Republic? Even during his visit to China in August 2023 for climate talks, not only did he overlook that country’s appalling environmental track record, to add insult to injury, while there he critiqued Suncor for recommitting to oil sands development, highlighting a troubling policy double standard.

  1. Watch What They Do, not What They Say

The economic and cultural elites, who incessantly warn of an impending climate catastrophe, seem to contradict their own claims by their extravagant lifestyles. Their opulent residences, frequent use of private jets, and other extravagances reveal a significant disconnect between their rhetoric and their behaviour, suggesting either hypocrisy or a lack of belief in the very crisis they promote.

  1. Magical Thinking

When they purport to compel the oil and gas industry to adopt new technologies, politicians and policymakers indulge in a particularly delusional form of magical thinking. First, the industry is already one of the most innovative sectors in the economy. Second, these individuals demonstrate a profound ignorance of both climate change and the complex challenges of energy production. As is typical of low-information politicians, they seem to believe that all they need to do to enact change in line with their utopian ideals is to snap their fingers or twitch their collective nose.

  1. A Multiplier of Human Misery

All the regulations that politicians like Guilbeault introduce with a regularity that rivals the proverbial cuckoo clock have nothing to do with creating new sources of energy or making energy more accessible and affordable. If they were genuinely concerned about their constituents’ welfare, these politicians would incentivize nuclear energy. But they conspicuously do not. These incessant regulations, taxes, and oppressive energy policies serve one purpose: to inflate energy prices so high that middle-class individuals are forced to drive less, reduce their energy use for heating and cooling their homes, and drastically curbing manufacturing. To the extent that such policies persist, they will impose an increasingly devastating economic burden on the poor and the working class.

  1. Extreme Weather Events

A radical reduction in CO2 emissions will not only lead to a weaker economy and increased poverty, but it will also diminish our capacity to respond to extreme weather conditions, which will occur regardless of the taxation governments impose on human activities.

  1. The Used-Car Salesman Syndrome

You know you’re being conned when a used car salesperson fails to mention the downsides of the vehicle being considered. The same skepticism and caution should be applied to politicians who tout only the benefits of their proposed policies without discussing the costs. Either they are blissfully unaware of these costs, or they believe they will be insulated from the real-world repercussions of their harmful policies due to their status, wealth, or connections.

  1. Anti-Human Perspective

While it’s unwise to gratuitously attribute malicious intent to anyone, the evidence suggests that proponents of radical climate change policies operate from what can only be described as an anti-human perspective. They view human beings as liabilities and parasites rather than, as the Judeo-Christian tradition asserts, the valuable assets they truly are.

  1. A Matter of Debate

Before we collectively devastate our economies, further reduce our birth rates in a misguided attempt to save the planet, squander trillions of dollars, and halt human progress by making energy both scarce and exorbitantly expensive, it’s crucial to remember that human-induced climate change is not a settled fact, but rather a hypothesis largely unsupported by the history of the climate but supported by climate models that have considerable error built into them.

In conclusion, Bjorn Lomborg, the Danish political scientist and founder of the prestigious Copenhagen Consensus Center—an organization renowned for producing some of the most authoritative studies on environmental issues—wisely reminds us that while there are environmental concerns needing attention, it’s questionable whether climate change constitutes an existential crisis that warrants dedicating all our resources at the expense of human life and flourishing.

Pierre Gilbert is Associate Professor Emeritus at Canadian Mennonite University. He writes here for the Frontier Centre for Public Policy.

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Top Brass Is On The Run Ahead Of Trump’s Return

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From the Daily Caller News Foundation

By Morgan Murphy

With less than a month to go before President-elect Donald Trump takes office, the top brass are already running for cover. This week the Army’s chief of staff, Gen. Randy George, pledged to cut approximately a dozen general officers from the U.S. Army.

It is a start.

But given the Army is authorized 219 general officers, cutting just 12 is using a scalpel when a machete is in order. At present, the ratio of officers to enlisted personnel stands at an all-time high. During World War II, we had one general for every 6,000 troops. Today, we have one for every 1,600.

Right now, the United States has 1.3 million active-duty service members according to the Defense Manpower Data Center. Of those, 885 are flag officers (fun fact: you get your own flag when you make general or admiral, hence the term “flag officer” and “flagship”). In the reserve world, the ratio is even worse. There are 925 general and flag officers and a total reserve force of just 760,499 personnel. That is a flag for every 674 enlisted troops.

The hallways at the Pentagon are filled with a constellation of stars and the legions of staffers who support them. I’ve worked in both the Office of the Secretary of Defense and the Joint Chiefs of Staff. Starting around 2011, the Joint Staff began to surge in scope and power. Though the chairman of the Joint Chiefs is not in the chain of command and simply serves as an advisor to the president, there are a staggering 4,409 people working for the Joint Staff, including 1,400 civilians with an average salary of $196,800 (yes, you read that correctly). The Joint Staff budget for 2025 is estimated by the Department of Defense’s comptroller to be $1.3 billion.

In contrast, the Secretary of Defense — the civilian in charge of running our nation’s military — has a staff of 2,646 civilians and uniformed personnel. The disparity between the two staffs threatens the longstanding American principle of civilian control of the military.

Just look at what happens when civilians in the White House or the Senate dare question the ranks of America’s general class. “Politicizing the military!” critics cry, as if the Commander-in-Chief has no right to question the judgement of generals who botched the withdrawal from Afghanistan, bought into the woke ideology of diversity, equity and inclusion (DEI) or oversaw over-budget and behind-schedule weapons systems. Introducing accountability to the general class is not politicizing our nation’s military — it is called leadership.

What most Americans don’t understand is that our top brass is already very political. On any given day in our nation’s Capitol, a casual visitor is likely to run into multiple generals and admirals visiting our elected representatives and their staff. Ostensibly, these “briefs” are about various strategic threats and weapons systems — but everyone on the Hill knows our military leaders are also jockeying for their next assignment or promotion. It’s classic politics

The country witnessed this firsthand with now-retired Gen. Mark Milley. Most Americans were put off by what they saw. Milley brazenly played the Washington spin game, bragging in a Senate Armed Services hearing that he had interviewed with Bob Woodward and a host of other Washington, D.C. reporters.

Woodward later admitted in an interview with CNN that he was flabbergasted by Milley, recalling the chairman hadn’t just said “[Trump] is a problem or we can’t trust him,” but took it to the point of saying, “he is a danger to the country. He is the most dangerous person I know.” Woodward said that Milley’s attitude felt like an assignment editor ordering him, “Do something about this.”

Think on that a moment — an active-duty four star general spoke on the record, disparaging the Commander-in-Chief. Not only did it show rank insubordination and a breach of Uniform Code of Military Justice Article 88, but Milley’s actions represented a grave threat against the Constitution and civilian oversight of the military.

How will it play out now that Trump has returned? Old political hands know that what goes around comes around. Milley’s ham-handed political meddling may very well pave the way for a massive reorganization of flag officers similar to Gen. George C. Marshall’s “plucking board” of 1940. Marshall forced 500 colonels into retirement saying, “You give a good leader very little and he will succeed; you give mediocrity a great deal and they will fail.”

Marshall’s efforts to reorient the War Department to a meritocracy proved prescient when the United States entered World War II less than two years later.

Perhaps it’s time for another plucking board to remind the military brass that it is their civilian bosses who sit at the top of the U.S. chain of command.

Morgan Murphy is military thought leader, former press secretary to the Secretary of Defense and national security advisor in the U.S. Senate.

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