The switch is flipped at
Crane Arts. This week, the Kensington warehouse building, which houses artist studios and commercial space, powered up Philadelphia's largest rooftop photovoltaic solar array. Over four hundred panels will supply 81 kilowatts per year. The array is owned not by Crane, but by a new company called
Solar States, which hopes to expand partnerships with property owners to create 15 commercial solar rooftops in the city for a total of 1 megawatt of solar capacity outputting thousands of megawatt hours.
In a departure from traditional solar panel installation, the for-profit Solar States offers photovoltaic installation at zero cost to building owners, selling back electricity at a discount. According to Micah Gold-Markel, founder of Solar States, the plan is for Crane to remain on the grid, so tenants will be using a mix of solar and traditional electric company power. Another way Solar States could profit is by selling back surplus power to the grid. It's a complicated auction system in which a company like Solar States sells a certificate to electric companies as a way of diversifying their energy portfolio, in compliance with the state Alternative Energy Portfolio Standard. While Gold-Markel hopes Crane will use the maximum output offered by the solar array, there will be many hours of sunlight when the building is quiet, and excess power generated by the array will generate certificates, as well as a discount to Crane. Gold-Markel says that for Solar States, profitability is sustainability. Solar States, not the building owner, also receives all Pennsylvania and federal solar rebates, tax incentives and credits.
The Crane array was designed by Helio Systems and GRASS (Green Roofs and Solar Systems), and Solar States estimates that it will provide a 20 percent cost savings over standard PECO rates.
Source: Micah Gold-Markel, Solar States
Writer: Sue Spolan