We rely on a sophisticated system to deliver electricity all across our state called "the grid".
To have reliable power, all of the grid, generating stations, substations and power lines need to work together.
1. Generating Plants
Delivering energy to our 2.7 million customers begins at our 18 generating plants. The diversity of our fuel mix allows for a reliable power supply for our customers.
2. Transmission Lines
Think of transmission lines as the highways of electricity. Smaller distribution lines connect to buildings like local streets. From the generating stations, large amounts of electricity are transported on high-voltage transmission lines to local substations.
Transmission investments are critical to safe and reliable service. We're investing $3 billion on electrical system upgrades over the next few years.
3. Substations
Substations are banks of electrical equipment that convert the transmission line voltage to lower levels that are appropriate for use in local communities. Substations also control the flow of electricity and protect the lines and equipment from damage.
4. Distribution Power Lines
Distribution power lines, which can be installed above ground or underground, carry between 4,000 and 25,000 volts of electricity to your neighborhood.
5. Your Home or Business
A transformer converts the high distribution-level voltage to lower voltage levels (120 to 480 volts) that can be used inside your home or business. Voltage is carefully measured to meet the customer's needs. Transformers can be mounted on poles or placed on the ground.
Grid Reliability
Discover how we are always working to make the grid stronger and more resilient.
Electrical Safety
Learn how to be safe around electricity, both inside and outside.