Why would someone choose 200amp service over 100amp service today?


Homes that might find a 100-amp service adequate typically have certain characteristics and usage patterns. Here are some scenarios where a 100-amp service might be sufficient:

  1. Smaller Homes or Apartments: Smaller living spaces like apartments, tiny homes, or smaller single-family homes, which have fewer electrical appliances and lower overall power consumption, can often manage well with 100-amp service.

  2. Limited High-Energy Appliances: Homes without major power-consuming appliances such as central air conditioning, electric heating systems, hot tubs, or electric vehicle charging stations.

  3. Older Homes with Minimal Electrical Requirements: Older homes that haven’t been upgraded with modern appliances and systems might not require more than 100 amps.

  4. Basic Usage Patterns: Homes where the usage of electrical appliances is basic or minimal. This might include homes without extensive entertainment systems, home offices with multiple electronic devices, or large power tools.

  5. Energy-Efficient Homes: Homes that are designed to be highly energy-efficient, using appliances and systems that have low power requirements, might manage with a 100-amp service.

  6. No Plans for Major Renovations or Additions: Homes where there are no foreseeable future renovations that would involve adding high-energy appliances or systems.

  7. Low Concurrent Usage: In households where there is seldom concurrent use of multiple appliances, reducing the likelihood of exceeding the 100-amp capacity.

  8. Homes with Gas Appliances: If major appliances like heating, stove, and water heater are gas-powered rather than electric, the electrical load is significantly reduced.


Choosing a 200-amp service over a 100-amp service for a whole-home generator involves several considerations based on the home’s electrical needs, future expansion, and modern appliance requirements. Here are key reasons why someone might opt for a 200-amp service:

  1. Higher Electrical Demand: Modern homes, especially larger ones or those with high-energy-consuming appliances (like electric heating systems, central air conditioning, hot tubs, or electric car chargers), may require more power than a 100-amp service can provide.

  2. Future Proofing: As homes get equipped with more advanced and power-hungry appliances and technology, a 200-amp service ensures that the electrical system can handle future upgrades or additions without needing an expensive upgrade later.

  3. Increased Safety and Efficiency: A 200-amp service can handle higher electrical loads more safely and efficiently, reducing the risk of overloading circuits, which can lead to potential electrical fires.

  4. Resale Value: Homes with 200-amp service are often more appealing in the real estate market as they are considered better equipped to handle contemporary electrical needs.

  5. Simultaneous Use of Appliances: A 200-amp service allows for more appliances to be used simultaneously without tripping breakers or causing fluctuations in power.

  6. Whole-Home Generators: For whole-home generators, a 200-amp service ensures that almost all circuits in the home can be powered simultaneously during an outage. This is particularly important for homes with essential power needs across multiple circuits.

  7. Dedicated Circuits: Homes that require numerous dedicated circuits for specific appliances or areas can benefit from a 200-amp service, providing more flexibility in electrical distribution.

  8. Home Workshops: Homes with workshops that use power tools or equipment with high electrical demands will find a 200-amp service more suitable.

  9. HVAC Systems: Larger or multiple HVAC systems in a home, which are common in larger or multi-story homes, often necessitate a higher amp service.

  10. Electrical Panel Capacity: A 200-amp service allows for a larger capacity electrical panel with more circuit breakers, accommodating a greater number of circuits.

choosing a 200-amp service over a 100-amp service is often driven by the current and anticipated future electrical demands of a home, providing a safer, more efficient, and more flexible power supply.