1979 Press Photo Steve Adams shows how curtains block heat in Santa Rosa home.

Large south-facing windows that capture the sun's heat are a "passive" solar feature of PG&E's solar hybrid Demonstration home I Santa Rosa. Heavy insulation curtains keep heat loss at night to a minimum. PG&E's Steve Adams shows how the curtains may be lowered to block out unwanted heat during summer months. Solar

Photo measures 8 x 10.25 inches. Photo is dated 08-10-1979.

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