30 Mar '13, 11am

Islandable Solar—PV For Power Outages - EBN: 22:4 - via @sharethis

With the right technology, a grid-connected solar-electric system can still provide electricity during power outages. This Sunny Island inverter from SMA America, coupled with a 48-volt battery bank as small as 100 amp-hours, allows a grid-connected PV system to function when the grid is down. Many people assume that an onsite renewable-energy system will give you power during a utility outage. That’s not necessarily the case. The vast majority of PV systems today are grid-connected. If the grid goes down, these systems not only leave houses dark at night but also won’t deliver electricity when the sun is shining. This is in part a safety precaution to protect utility workers repairing downed lines. For access to solar-generated electricity during power outages—a feature of resilient design —there are three options today. 1. Standalone (off-grid) PV systems Standalone PV s...

Full article: http://www.buildinggreen.com/auth/article.cfm/2013/3/29/I...

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