Planning a project near overhead power lines? We’ve heard from a lot of members lately about some confusion regarding Minimum Approach Distance (MAD) requirements, also known as Limits of Approach (L.O.A.). To help keep your projects moving smoothly, we’ve reached out to EPCOR to break down what you need to know to avoid permit delays and unexpected costs.
What exactly is MAD?
MAD refers to the absolute safe distance that people or equipment must maintain from energized power lines. These distances aren’t just for your final building—they also account for the space required for personnel and construction equipment to operate safely during the build and for exterior finishing.
What triggers a MAD Report?
The City of Edmonton’s Development Approvals team will automatically circulate your development permit (DP) application to EPCOR for a report if your proposed structure meets both of these criteria:
Height: The highest point of the building exceeds 5.5 meters.
Proximity: Within 4.5 meters horizontally from the property line adjacent to an overhead power line.
Important: Even if your specific project doesn’t trigger an automatic circulation, you are legally required by the Alberta OH&S Code to contact EPCOR if you are working within 7 meters of a power line to confirm voltage and safe approach distances.
Planning for Success (and avoiding that 6-week wait!)
Currently, it can take approximately 6 weeks to generate a MAD report. To avoid having your permit held up, we recommend being proactive:
Design Early: Factor in power line "sag" (caused by moisture, heat, or ice) and "swing" (caused by wind) into your initial site layout and building design.
Request Early: If your build is within 7 meters of power lines, don’t wait for the City to circulate your application. Email your request directly to ces@epcor.com to get the process started.
Safety Consultations: If your project involves working within 7 meters of an overhead power line, contact EPCOR’s Power Emergencies at (780) 412-4500 to request a Safety Codes Consultation.
A Note on Costs
Proactive planning is key. If your design leaves insufficient space for equipment to safely operate between the MAD and your structure, you may need to pay for additional safety measures, such as installing temporary insulating line covers, de-energizing the line, or arranging for direct supervision by an EPCOR power line crew.
For more information, including a detailed guide on planning and working safely around power lines, please visit epcor.com and view this PDF which provides an overview of MAD reports for builders.