Harvesting the Sun

Solar technology belongs in the landscape.

By Julie Moir Messervy


Harvesting the SunSolar energy is positive in many ways, but making shiny silver solar cell panels disappear into a landscape is not the easiest thing to do. People with enough land often don't even try, placing solar panels in massive backyard arrays or mounting them on vertical stands that rotate with the sun. How-ever, for those living on small lots in close-knit, tree-lined neighborhoods, where land and sunlight are at a premium, we need to find a way to elegantly integrate these units into the landscape, while still gaining all the rays necessary to make their use efficient.

There are two basic types of solar panels. Solar hot-water panels are made of translucent acrylic and equipped with pipes that heat the water and disperse it into a holding tank in the basement. The other type, photovoltaic or PV panels, usually have a handsome rainbow sheen that reflects light and attracts the eye. Photovoltaic panels can be tied to batteries or wired directly into the home's existing energy system. Arranging them in a grid—either staggered, aligned, or offset—on an existing south-facing roof can keep them relatively low-profile, while creating an attractive reflective focal point.

If you have the resources, framing solar panels with turf or green roofing systems can combine an eco-landscaping trend with energy efficiency; green roofs, too, are a way to harness water runoff and divert it to garden use rather than storm drains. Until recently, green roofs made much use of drought-tolerant sedums, and although well suited for a low-water-use, they set up a mono-cultural landscape. Sedums are now giving way to all manner of plantings, including brightly colored perennials, ornamental grasses, mosses, and ferns. In my landscape architecture practice, we even scatter wildflower mixes onto a green roof matrix to give more text-ure, color, and bloom period around the solar panels.

With some ingenuity, traditional solar panels can be turned into a useful and beautiful part of your landscape. California architect Ken Radtkey and landscape architect Susan Van Atta fashioned their photovoltaic solar panels into a useful and elegant veranda that sits atop their 2,500-square-foot home nestled into a Montecito hillside. Rather than wasting the space underneath the panels, they chose to hang two swinging benches made of recycled plastic, one in green to represent new growth, and one in brown to meld with the wooden elements on their house. From this perch, they can see across the arched green roof planted in sedum and dudleya that seems to merge with the surrounding landscape all the way to the Pacific Ocean. The LEED Platinum house is designed to be highly efficient, so the PV and solar hot-water panels set nearby meet all the electrical and hot-water needs of the household.