Reed will be replaced on May 1 by Jeffery Martin, presently the energy services group’s chief financial officer, though she will remain with the company as executive chairperson until she leaves the company entirely in December.
It will bring to an end a 40-year career with the company.
"Last month, I reached my 40th year in the Sempra Energy family of companies," Reed said in a statement.
"We are close to concluding several of our major growth initiatives, such as expanding in Texas with our acquisition of a majority interest in Oncor and the anticipated launch of our liquefied natural gas (LNG) export business in Louisiana next year.
“We have established a strong growth engine in Mexico with our IEnova subsidiary. Our California and South America utilities continue to perform at a very high level, providing safe and reliable service to their millions of customers and innovating to adapt to future market needs.
"Over many years, our board of directors has led a robust leadership succession planning effort and today's announcement of new officer elections reflects the successful implementation of this planning.”