Electricity is essential to modern life. It powers the moments that matter.
But before that energy can reach homes, hospitals, schools and workplaces, it must travel across a vast transmission network. ATC plays a vital role in that journey. We build, operate and maintain the high-voltage grid that moves electricity from where it’s generated to the local utilities that deliver it to the places people live and work.
By keeping this critical system strong and reliable, we help ensure the energy that powers everyday life is there when it’s needed—today and for the future.
More than 700 employees
ensure you have the energy
you need, when you need it.
More than 5 million electric consumers in service area
Powering the region with reliability and expertise
We are a Wisconsin-based, federally and state-regulated utility with deep expertise in building, operating and maintaining the regional power grid. Our system spans portions of Wisconsin, Minnesota, Illinois and the Upper Peninsula of Michigan, delivering reliable energy to more than 5 million consumers. Every minute of every day, more than 700 employees work to keep the power flowing—so you have the energy you need, when you need it. The safe and reliable operation of our system, combined with the dedication of our people, creates the vital connection between where power is generated and where it is needed.
we bring the energy
The electric power you use every day flows through a three-part system – generation, transmission and distribution. Power plants, solar fields, wind farms and other sources generate electricity that flows through high-voltage power lines over long distances to substations where the voltage is lowered. The power then flows over smaller, local wires known as distribution lines to homes and businesses.
Electricity is generated at various utility-owned power plants and independent power producers. The origin of that power comes from any of three basic generation sources.
The vital link between power production and power usage, ATC’s high-voltage power lines carry electricity over long distances from where it is generated to communities where it is needed.
Electicity from high-voltage power lines is reduced to lower voltages at substations. The power then flows over smaller, lower-voltage wires known as distribution lines to homes and businesses.
ATC IS A MEMBER OF MISO
Connecting to the larger electric grid
Every minute of every day, 45 million people depend on MISO (Midcontinent Independent System Operator) to deliver just the right amount of electricity—reliably, dependably, and cost-effectively. As a publicly regulated utility and independent, not-for-profit, member-based organization headquartered in Indiana, MISO’s sole focus is operating and strengthening the regional electric grid. Its customers are local distribution companies and utilities across its footprint.
The MISO region spans all or portions of 15 U.S. states—Arkansas, Illinois, Indiana, Iowa, Kentucky, Louisiana, Michigan, Minnesota, Mississippi, Missouri, Montana, North Dakota, South Dakota, Texas, and Wisconsin—as well as the Canadian province of Manitoba.
As a member-driven organization, MISO performs three critical functions:
As a member-driven organization,
MISO
performs three critical functions:
1
Reliably managing the flow of high-voltage electricity across 15 U.S. states and the Canadian province of Manitoba
2
Facilitating one of the world’s largest energy markets with more than $40 billion in annual transactions
3
Planning the grid of the future
ATC’s ROLE WITH MISO
Our utility customers and other organizations across the Upper Midwest are pursuing new energy policy goals that are affecting changes to generation sources. We work directly with MISO to determine the viability, planning and design interconnections for renewable generation projects being proposed across the Upper Midwest and within our service area. Our planning and engineering experts collaborate with utility customers to develop efficiencies and use technologies that interconnect these new resources, helping strengthen the grid during this energy transition.
it’s all about reliability
monitor
the grid 24/7/365
from our
operation centers
protect
the grid
from physical and cyber threats
restore power
quickly and safely in the event of an outage
maintain existing grid facilities
plan and build new facilities
to ensure
reliability
The winds of change
As the energy landscape rapidly evolves and the electric industry
shifts away from traditional generation, we are transforming the grid
to meet new demands—strengthening and expanding infrastructure
to reliably, economically and safely deliver power from a growing mix
of energy sources to the communities that depend on it. No matter
how it’s generated – we bring the energy.
energizing futures
today
ATC provides over 700 employees with exciting opportunities and the ability to build meaningful, long-term careers within a supportive and dynamic environment.
tomorrow
ATC is energizing brainSTEMS every day by supporting STEM education for several years through K-12 partnerships and college internships
bringing energy to communities everywhere
