solar heat

Earth Notes
12:00 am
Wed December 14, 2011

Earth Notes: Honoring the Sun--Passive Solar Design

Passive Solar House

Since time before memory people have used sunlight to make southwestern homes more livable. Many of the region’s characteristic cliff dwellings were carefully sited in places that are shaded in summer, but sunny in winter. That allowed natural heating to reduce the need for warming fuels.

Today savvy builders and homeowners are following in that tradition through clever design. Builders of new houses use passive solar design to bring sunlight in when it’s wanted and exclude it when it’s needed. And smart remodeling, too, can reduce heating and cooling bills.

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Earth Notes
12:00 am
Wed December 7, 2011

Earth Notes: Honoring the Sun I: Solar Panels’ Side Benefit

Rooftop Shading

This month, as nights grow long, Earth Notes pays homage to the sun and to some of the lesser-known ways it can fuel our lives.

It’s well known that photovoltaic solar panels produce clean, renewable energy. But a new study suggests that they can have an unintended consequence: in some climates, panels mounted on roofs may help keep interiors cool in summer and warm in winter.

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