Rooney, a serial entrepreneur and a true believer in sustainable energies, has extensive experience in the energy industry. SPG Solar has quickly become a leader in the Western United States, with more than 1,200 grid-connected photovoltaic systems and counting. Rooney, a serial entrepreneur and a true believer in sustainable energies, has extensive experience in the energy industry. SPG Solar has quickly become a leader in the Western United States, with more than 1,200 grid-connected photovoltaic systems and counting.