Case Study: Canton Crossing Tower — Baltimore Commercial Window Film

Canton Crossing Tower at 1501 S. Clinton St. in Baltimore used commercial window film to address solar heat, occupant comfort, and energy costs across approximately 50,000 square feet of glass. ATD Solar reports that the project used 3M Sun Control Window Film Ceramic Series 30 and was completed in three phases in less than three months.

Project overview

• Location: Canton Crossing Tower, Baltimore, Maryland.
• Reported glass area: Approximately 50,000 square feet.
• Reported system: 3M Sun Control Window Film Ceramic Series 30.
• Installation: Three phases completed in less than three months.
• Incentive: ATD reports that 3M facilitated a custom rebate program with ICF International supporting Baltimore Gas and Electric energy-efficiency programs, including a rebate of 40% of total job cost.

The challenge: solar heat across a large glass area

ATD describes the tower as having a large glass area that increased energy use and affected interior comfort. Building ownership wanted a cost-effective, non-intrusive way to reduce energy costs and improve comfort without changing the tower's appearance.

The specified film and installation plan

ATD Solar & Security, identified on the source page as a 3M Authorized Window Film Dealer for the Baltimore/Washington area, recommended Ceramic Series 30. The installer reports that the film offered low reflectivity, high clarity, and 82% infrared heat rejection. The work was organized as a three-phase installation and finished in under three months, a useful model for occupied commercial buildings that need a sequenced retrofit.

Reported energy result and how to interpret it

ATD reports that 3M estimated annual savings of 1.3 million kWh and that the project would pay for itself in less than four years after the rebate. These are installer/manufacturer-reported estimates from the case study, not an independent energy audit or a guarantee. Actual results depend on the building envelope, glass, orientation, HVAC operation, utility rates, weather, occupancy, rebate terms, and installation quality.

Lessons for building owners

1. Start with a building assessment: Review glass type, orientation, solar exposure, HVAC loads, and comfort complaints before specifying film.
2. Ask about incentives: Utility rebates can materially change project economics, but eligibility and terms must be confirmed for the specific building and program year.
3. Plan around occupancy: A phased schedule can reduce disruption in a tower with active tenants.
4. Separate estimates from guarantees: Use the case-study savings figure as a reported estimate and validate projected performance for the actual building.

Key takeaways

• ATD reports approximately 50,000 square feet of glass at Canton Crossing Tower.
• The reported system was 3M Sun Control Window Film Ceramic Series 30.
• The three-phase installation was completed in less than three months.
• ATD reports an estimated 1.3 million kWh in annual savings and a payback of less than four years after rebate; those figures are not an independent audit.

Sources

1. ATD Solar Film and Graphics — Canton Crossing Tower Case Study

Source note: Scope, product selection, rebate details, schedule, savings, and payback are summarized from ATD Solar's installer-published case study. Reported savings and payback are estimates, not a guarantee or independent audit.