5 Solar Energy Myths You Shouldn’t Believe

Posted by on April 25, 2016 in Eco-Friendly, Environment with 1 Comment

solar obama

By Sarah Lozanova | Earth911

Renewable energy continues to advance, particularly the solar energy market which is dynamic and evolving quickly. Proof you say? Let’s take a look at a few facts first.

  • The solar industry had another record-breaking year in 2015, with installed capacity increasing 16% over 2014 installations.
  • At the same time, solar system prices fell by 17%.
  • For the first ever, solar beat natural gas in new power capacity last year, with solar energy contributing 29.4% of total new electric generation capacity.

Meanwhile, solar technology advances are making systems more energy efficient and resistant to shade from trees and buildings, allowing them to produce a larger percentage of overall household energy consumption. Many solar installers now offer solar system monitoring, so homeowners can view historic and real-time solar system output data. With such a dynamic market and with technology advances, things that were true a few years ago may no longer be true today.


Related Article: Hawaii’s Going 100 Percent Renewable Without Using Natural Gas

Researching renewable energy

Separating fact from fiction, let’s take a look at a few myths about solar energy that still prevail. Here are the Top 5 myths about renewable energy — specifically solar.

Myth 1: Solar PV systems require a lot of maintenance and upkeep

Man working on a solar renewable energy panel

WITH NO MOVING PARTS, GRID-TIED SOLAR RENEWABLE ENERGY ELECTRIC SYSTEMS (WITHOUT BATTERIES) REQUIRES VIRTUALLY NO MAINTENANCE. IMAGE CREDIT: LUCARELLI TEMISTOCLE / SHUTTERSTOCK

With no moving parts, grid-tied solar electric systems (without batteries) requires virtually no maintenance. This is impressive, considering the design life of most solar systems is 25 to 30 years. Most solar panel manufacturers even provide 20 to 30 year warranties, because the technology is so reliable.

It is however recommended to inspect solar panels for dust or debris a couple times a year, and clean them with the garden hose if necessary to ensure optimum energy output. Use caution when viewing or cleaning solar panels from high heights, if they cannot be clearly viewed from the ground. Most solar system owners never do inspect panels for cleanliness or clean them however and their systems continues to perform well.

Most residential solar systems are connected to the electric grid and have no batteries, which makes them more efficient than a system without batteries. Most utility companies across the country have net metering programs to credit solar system owners for feeding solar electricity to the power grid, when the system is generating more than the home consumes at the time.

Related Article: New Rooftop Solar Panels Are 30 – 40% More Efficient

Batteries decrease the sustainability and efficiency of the solar system, as not all the power is actually captured and used. Like any other kind of battery, solar system batteries do require maintenance and will need to be replaced every five to ten years. They are also bulky and the batteries themselves have an environmental impact, even if they are recycled at the end of their life.

Myth 2: Solar power is very expensive

Although this was a true statement just a decades ago, the cost of solar panels and equipment has plummeted. As solar technology advances, solar energy production is also increasing significantly, allowing the system to produce more of the overall household electricity. Now that solar electricity has grown nearly exponentially in popularity, solar equipment is mass produced, allowing prices to fall significantly.

A similar phenomenon happened with digital cameras, DVD players, and laptops. Although these gadgets were very costly when they first hit the market, prices have since declined dramatically, making them more affordable for many people. Likewise, solar technology is advancing and becoming more efficient as well.

“There are higher efficiency solar panels available on the market now, which come at a slightly lower price [per watt],” says Nir Maimon, CEO of Sol Reliable, a solar installation and green energy solutions company headquartered in Los Angeles. “Average panel efficiency is now 17%-21%, while previously, it was closer to 16%-17% efficiency.”

At the same time, residential electricity rates have also increased over the last decade, especially in certain areas of the country. The financial performance of a solar system is largely dependent on the cost of electricity that a homeowner would otherwise pay. Today, solar energy systems have never been as affordable, or a better investment, especially in certain markets.

Myth 3: Solar panels don’t generate much electricity during the winter

Solar renewable energy panels covered in snow

WHEN THE TEMPERATURE OF THE SOLAR PANELS IS COOLER, THEY CAN GENERATE MORE RENEWABLE ENERGY. IMAGE CREDIT: BERNHARD RICHTER / SHUTTERSTOCK

Unless you live on the North or South Pole, solar energy systems typically generate a lot of electricity during colder weather, unless they are covered by snow or ice. Despite the angle of the sun being lower in the sky and the days being shorter, solar energy systems can generate significant amounts of electricity throughout the winter months.

This is because solar panels use light, not heat, to generate electricity. When the temperature of the solar panels is cooler, they can generate more renewable energy. Once they reach temperatures around 32 degrees Celsius or 90 degrees Fahrenheit, solar panel output starts to decline. Since panel temperatures are roughly 20 degrees Celsius warmer than ambient temperatures, these temperatures are commonly reached in most climates.

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