A 1.3-megawatt solar PV system is estimated to provide 100% of the electrical needs at the Exploratorium in San Francisco, California. The design team for the Exploratorium includes the Integral Group, EHDD, Page & Turnbull, and many other consultants. (Image courtesy The Exploratorium)

A 1.3-megawatt solar PV system is estimated to provide 100% of the electrical needs at the Exploratorium in San Francisco, California. The design team for the Exploratorium includes the Integral Group, EHDD, Page & Turnbull, and many other consultants. (Image courtesy The Exploratorium)

A 1.3-megawatt solar PV system is estimated to provide 100% of the electrical needs at the Exploratorium in San Francisco, California. The design team for the Exploratorium includes the Integral Group, EHDD, Page & Turnbull, and many other consultants. (Image courtesy The Exploratorium)