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Energy Audits Need a Digital Upgrade

William Attardi on September 26, 2025

Traditional audits still have merit, but often they miss live inefficiencies. Artificial Intelligence tools reduce human error and generate immediate insights that could mean measurable savings. Automation is not new to manufacturing but the scope of the technology is leading to novel applications as industry leaders rethink energy management. Traditional audits still have merit, but often they miss the live inefficiencies that persist in production systems. Artificial Intelligence tools reduce human error and generate immediate insights that could result in measurable savings for those systems. Can AI Help Conduct an Energy Audit and Find Savings Opportunities? | Enterprise Data | American Machinist

The Role of Energy Audits in Enhancing Facility Performance by Ellie Gabel

William Attardi on March 4, 2025

According to the U.S. Department of Energy (DOE), approximately 30% of the money used to power buildings — around $400 billion annually — is wasted yearly. A professional-grade energy audit can help facility managers reduce electricity expenses without compromising comfort or safety. During a commercial energy audit, an auditor assesses how, where and why a facility consumes power. They aim to address inefficiencies and identify areas of opportunity, enabling a substantial energy consumption reduction. Whatever the audit’s results, management will receive a baseline on the property’s energy consumption, waste and reuse effectiveness rating. They can use this data to identify pain points, explore areas of opportunity, or prioritize equipment upgrades. Nearly 40% of a building’s energy usage can be attributed to lighting. Replacing outdated lighting fixtures with more energy efficient options can drastically reduce those costs. The Role Of Energy Audits In Enhancing Facility Performance

The Statue of Liberty was made with copper but due to oxidation, it turned green.

When the “Lady in the Harbor” first arrived in New York in 1886, she didn’t look like the mint-green icon we know today. In fact, for the first twenty years of her life, she stood as a towering, metallic beacon of reddish-gold. Designed by French sculptor Frédéric Auguste Bartholdi and engineered by Alexandre Gustave Eiffel, the statue was a gift from France to America. To build her, Bartholdi chose copper for three practical reasons:

  • Malleability:It could be hammered into elaborate, thin sheets.
  • Weight:Copper is lighter than stone or bronze, making it easier to ship 350 individual pieces across the Atlantic.
  • Durability:It was strong enough to survive a 27-day ocean voyage and the harsh winds of the harbor.

When she was unveiled on October 28, 1886, her skin—made of 300 copper sheets roughly the thickness of two pennies—shone with a bright, metallic brown luster. The transformation from “penny-colored” to “patina-green” wasn’t planned. Bartholdi actually expected the statue to age into a deeper, darker red. However, the unique environment of New York Harbor—a mix of salt air, moisture, and industrial pollution—triggered a process called oxidation.

The Timeline of Change:

  1. 1886–1900:The bright copper dulled into a dark, muddy brown.
  2. 1903:The first hints of a light green crust, or “patina,” began to appear.
  3. 1906:The color change was so controversial that Congress nearly stepped in. They appropriated $62,000 to paint the statue back to its original color, but the public protested, calling the idea “sacrilege.”
  4. 1910–1920:The statue was a patchy mix of brown and green until 1920, when the oxidation was complete, leaving her entirely teal.

While we now view the green color as iconic, it actually serves a vital structural purpose. The layer of verdigris (the green patina) acts as a protective shield. It seals the copper underneath, preventing the metal from further corrosion and weathering.  By the time the color fully changed, a new generation of immigrants had arrived in America seeing a green statue.