Altadena Energy & Solar was founded by Hans Rosenberger out of a belief that good engineering and financing are important for the development of environmentally friendly solar energy systems and buildings. There is a strong demand for energy savings and 'green power, ' but too few practitioners who understand both engineering and finance.
Hans majored
Joshua Schpok —
We talked to about six solar installers before deciding on Altadena. From our first consultation, I was impressed they weren