100 Amp vs 200 Amp Panel Upgrade Cost in Ontario (2026 Guide)

100 Amp vs 200 Amp Electrical Service: Costs, Differences & When to Upgrade (Ontario Guide) Introduction As homes evolve with modern technology and increased electrical demand, many homeowners find themselves asking an important question: Is a 100 amp electrical service still enough? Whether you're planning a renovation, finishing a basement, or installing high-demand equipment like an EV charger, understanding the difference between 100 amp and 200 amp service is essential. This guide outlines the key differences, typical costs in Ontario, and when an upgrade becomes necessary. ⚡ Understanding 100 Amp vs 200 Amp Service 100 Amp Service Common in older homes across Ontario Designed for lower electrical demand Limited capacity for today’s appliances and equipment 200 Amp Service Standard for most newer homes Provides increased capacity and flexibility Ideal for: EV chargers Hot tubs Basement apartments Electric heating systems 💰 Cost of Upgrading in Ontario In the Greater Toronto Area, pricing typically falls within the following ranges: 100 → 200 Amp Service Upgrade: $2,500 – $5,500 Panel Replacement Only: $1,500 – $2,500 Final costs vary depending on factors such as panel location, wiring conditions, utility requirements, and permit scope. At WirePlus Electrical Inc, most upgrades fall within this range, with transparent pricing provided upfront. 🏠 When Should You Upgrade to 200 Amp? You should strongly consider upgrading if: Circuit breakers trip frequently You’re installing an EV charger You’re renovating or adding living space Your electrical panel is at full capacity You plan to add high-load appliances 📋 Permits & Inspection Requirements In Ontario, all electrical service upgrades must be completed under permit and inspected by the Electrical Safety Authority (ESA). This ensures: Compliance with the Ontario Electrical Safety Code Proper installation standards Safety for occupants and property ⚠️ Warning Signs of an Unsafe Electrical Panel Watch for these indicators: Burn marks or signs of overheating Flickering or dimming lights Outdated fuse panels Aluminum wiring connections Buzzing sounds from the panel If you notice any of these, a professional assessment is recommended. Real-World Insight Many homes across Toronto were originally built with 100 amp service. With today’s electrical demands, these systems are often pushed beyond their limits—leading to frequent breaker trips and reduced safety margins. Upgrading to 200 amp service not only improves performance but also future-proofs your home. Request a Quote WirePlus Electrical Inc. 📱 (416) 835-3324 📧 [email protected]