Is Window Film California’s Answer?

September 16th, 2020 by Emmariah Holcomb

California authorities recently issued the first rolling blackouts in 20 years which turned off power to more than 400,000 homes in order to cope with the peak energy demand. Can installing window film on older and less energy-efficient windows ease the state’s peak energy demand? The answer is yes.

There are benefits to window film installations in California.

According to a research study commissioned by the International Window Film Association (IWFA), a typical home’s energy use could be reduced by 10% if window film were installed on some of the nearly 9,000,000 California homes built prior to energy building codes. The energy savings is comparable to about the annual output of three, 500-Megawatt power stations, according to the association.

“Long lasting window films may give utilities load flexibility to reduce power demand and rolling blackouts,” said Darrell Smith, IWFA executive director. “As the sun heats up during the day, so do temperatures inside buildings. Cooling systems often must work harder during the costliest period of the day, when peak electric rates are charged and when utilities’ may be unable to provide everyone with electric power to meet the demand.”

Window film may cut cooling costs by 30% and repel about 80% of solar heat gain. Return on investment is often less than three years for commercial installations and the federal tax code offers a deduction for window film installations. The IWFA estimates installing window film may cost about one tenth of the expense of installing new windows.

A comprehensive analysis of window film found it to be the most cost-effective energy saving choice for Californians when used in retrofit applications on homes and buildings. California-based ConSol published an independent study that compared installing window film on existing structures in the state to other traditional energy saving techniques and found window film came out ahead.

For more on this topic, see more information about the study from a feature article in the May-June issue of Window Film magazine.

This article is from Focus on Film, the weekly e-newsletter that covers the latest news regarding window film and related products, including paint protection film. Click HERE to sign up—there is no charge. Interested in a deeper dive? Free subscriptions to Window Film magazine in print or digital format are available. Subscribe at no charge HERE.

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  1. THIS SHOULD ALSO BE STUDIED INTERNATIONALLY
    MY GUESS IS THAT THE WORLD WOULD BE FAR BETTER OFF IF WINDOWFILM WAS TO BE APPLIED IN BUILDINGS AND HOUSES ALL OVER THE WORLD

    THIS IS NOT WISHFULL THINKING .THE CHANGE IN THE CLIMATE WILL BRING US TO THAT SOLUTION BUT LIKE ALWAYS IT TAKES TIME TO TAKE THE RIGHT DECISIONS

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