Related Experiment Videos
Could electrified energy systems be more reliable with less reliable supply?
1Keough School of Global Affairs, University of Notre Dame, Notre Dame, IN, USA.
Iscience
|May 11, 2026
Summary
Decarbonizing energy systems requires focusing on reliable service provision, not just electricity supply. Electrified systems prioritizing service delivery may better meet needs, even if perceived as less reliable.
Area of Science:
- Energy Systems Transformation
- Decarbonization Strategies
- Socio-technical Systems
Background:
- Current energy systems rely heavily on fossil fuels, necessitating fundamental changes for decarbonization.
- Transformations must address technology, infrastructure, governance, and distributional equity.
- Residential heating is a key area where supply-side investments conflict with service provisioning.
Purpose of the Study:
- To propose a new metric for evaluating electrified energy systems: reliability of service provision.
- To examine the trade-offs between supply-side reliability and effective energy service delivery.
- To use residential heating as a case study for this evaluation.
Main Methods:
- Conceptual analysis and perspective framing.
- Examination of US residential heating sector as a critical case.
- Comparative evaluation of different reliability metrics.
Main Results:
- Success of decarbonized energy systems should be measured by service reliability, not just electricity supply.
- Electrified systems may better serve user needs by prioritizing service delivery over supply-side metrics.
- Rethinking reliability for electrified systems could lead to more equitable and effective energy services.
Conclusions:
- Shifting the focus from electricity supply to service provision is crucial for successful energy transitions.
- Electrified systems designed for service reliability can be counterintuitively effective.
- Addressing distributional harms requires innovative approaches to energy system design and evaluation.
Related Concept Videos
Distribution Reliability and Automation
Distribution reliability in electrical power systems is critical for ensuring an uninterrupted power supply to consumers at minimal cost. According to IEEE Standard Terms, reliability is the probability that a device will function without failure over a specified time period or amount of usage. For electric power distribution, this translates to maintaining continuous power supply and addressing customer concerns over power outages. Several indices, as defined by IEEE Standard 1366-2012, are...
Primary Distribution
Primary distribution systems deliver electrical power from substations to consumers through various voltage classes, with 15-kV class voltages being predominant among U.S. utilities. Older 2.5- and 5-kV classes are being replaced by 15-kV primaries, while higher 25- to 34.5-kV classes are used in high-density urban areas and rural regions with long feeders. Three-phase, four-wire multigrounded systems are widely employed for balanced power delivery, using the neutral wire as a grounding point.
Secondary Distribution
Secondary distribution systems provide electrical energy at the utilization voltage levels from distribution transformers to customer meters. Typical secondary voltages in the United States include 120/240 V for residential use, 208Y/120 V for residential and commercial use, and 480Y/277 V for industrial and high-rise commercial use.
In residential areas, 120/240 V single-phase, three-wire service is commonly used for lighting, outlets, and large appliances. Urban areas with high-density loads...
In residential areas, 120/240 V single-phase, three-wire service is commonly used for lighting, outlets, and large appliances. Urban areas with high-density loads...
Power System Distribution
Power system distribution involves delivering electrical energy from power plants to consumers through a network of transmission and distribution systems. The process begins at power plants, where energy from coal, gas, nuclear, water, and wind is converted into electrical energy. These plants use three-phase generators, typically rated between 50 to 1300 MVA, with terminal voltages ranging from a few kV to 20 kV, depending on the size and age of the units.
The transmission system is designed...
The transmission system is designed...
Control of Power Flow
There are several methods to control power flow in power systems:
Transformers in Distribution System
Transformers in distribution systems can be broadly categorized into distribution substation transformers and other distribution transformers. They are crucial for stepping down high transmission voltages to levels suitable for distribution and end-user applications.
Distribution substation transformers come in various ratings and typically use mineral oil for insulation and cooling. To prevent moisture and air from entering the oil, some transformers use an inert gas like nitrogen to fill the...
Distribution substation transformers come in various ratings and typically use mineral oil for insulation and cooling. To prevent moisture and air from entering the oil, some transformers use an inert gas like nitrogen to fill the...