Recurrent Energy

Because the sun doesn't shine everywhere all the time, the buildings stay connected to the local utility grid. Solar power typically displaces the expensive, peak-time utility power, according to Arno Harris, CEO. He says his company's solar service will typically shave between 5% and 10% from a building's previous electric bill.

"On large buildings, that can be significant," he says, "but the more important benefit is that it makes the building more sustainable. There's a huge explosion of interest in sustainability. Most of the big green initiatives are for new construction. Managers are concerned about older buildings' ability to compete," he suggests. Harris says his company developed the program to "overcome the problem of first cost" to building owners and "get beyond the one roof at a time business model." Neither owners nor tenants pay for the installation and operation, and Recurrent Energy profits from the sale of electricity the installation generates for the building.

While gaining "a green improvement to the building at no capital improvement investment, the service also provides owners with income from leasing the roof," Harris notes. He calls the rental income "the icing on the cake. The biggest interest among owners is improvement to the building's sustainability."