Official document

The Virginia State Corporation Commission Tariff 26 regulates the rates at which electricity may be sold in the commonwealth of Virginia.

The section relevant to street lamps begins on page 57 of the document.

The tariff specifies a fixed rate at which street lighting customers may pay to have non-LED fixtures/bulbs upgraded to LED fixtures/bulbs. Here is a relevant Department of Energy program to finance such replacements: https://www.energy.gov/eere/ssl/financing-options