As a result, the utility invested in five nuclear power plants.

The utility is also investing in transmission lines and energy efficiency programs to adjust its capacity and the demand.

But utilities won't invest in buybacks of their own stock, as they have in the past.

The utility will invest in energy efficiency wherever the cost of saving a kilowatt-hour is 4 cents or less.

In addition, electric utilities have invested billions of dollars on promising, energy-efficient clean-coal technologies.

If all those projects get off the ground, utilities would invest more than $100 billion.

The utility, which they declined to identify, would also invest in the public-private partnership by buying about $100 million of Lilco's debt.

The more a utility invests, the more money it earns.

State officials and investigators argue, though, that in the years covered in the complaint the utility invested very little money or manpower on maintaining environmental standards.

Consumer groups question whether utilities would have invested more in improving basic service if they had not had the option of putting money elsewhere.