On the roof, Casa Solaris has 24 solar panels, which feed to 12 batteries in what the architect calls “the engine room," plus two 50-gallon, solar hot water heaters, which feed to the sinks and outdoor showers. Photo by Michael Grimm.  Photo 9 of 9 in Modern Concrete Getaway in Paradise

Modern Concrete Getaway in Paradise

9 of 9

On the roof, Casa Solaris has 24 solar panels, which feed to 12 batteries in what the architect calls “the engine room," plus two 50-gallon, solar hot water heaters, which feed to the sinks and outdoor showers. Photo by Michael Grimm.