Redwood Systems Blog

Posted by dfisher on Wed, 10/24/2012 - 2:03pm

Sam Klepper of Redwood Systems talks to Commercial Property Executive on energy reduction and space utilization strategies.

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Saving energy in data centers

Posted by dfisher on Tue, 10/23/2012 - 9:40am

Interesting view inside one of Google's North American data centers. Looks like an optimal space for a Building-Performance Lighting Platform which has saved some of our data center customers +90% in lighting energy savings alone.

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Carnegie Mellon confirms powering LED lights with low voltage is most cost effective

Posted by Sam Klepper on Mon, 04/30/2012 - 10:50am

We all know LEDs are low voltage light sources. To power them using today's traditional infrastructure requires AC power from the wall that must be converted to low voltage DC power in a driver that is inside each light fixture. Adding this driver not only adds cost, but creates a potential point of failure and add a source of heat to the fixture. University researchers at Carnegie Mellon published a report in Energy Policy indicating the cost advantages of DC to LED vs. AC to LED. Redwood's approach to lighting controls uses this approach.

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Increasing value means growing demand for LED retrofits

Posted by on Thu, 02/09/2012 - 11:12am

The attractive attributes of LEDs including high efficiency, low temperature, low voltage and small size, have always been solid rationale for their amazing potential. With evolving technology the inverse relationship between light output and cost are bringing LEDs into the value 'sweet spot' for many commercial retrofits. As mentioned in View More

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The "All LED" Buildings are Coming

Posted by on Mon, 10/31/2011 - 12:00pm

Previously, I blogged about "Are We There Yet" with LED fixture economics. I think it's safe to say that it depends on the application. In the news today is Walmart, talking about their first 'All LED' retail store. (Link here) Interestingly, Wal-Mart was able to show 40% energy savings over alternate designs, and considering that Wal-Mart probably runs energy efficient lighting to begin with, we're starting to see significant LED headway in retail over _any_ alternative option.

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Motion sensing as a proxy for Data Center "freshness"

Posted by on Thu, 10/13/2011 - 11:44am

According to data collected by the Uptime Institute (link here), up to 10% of the server workload in data centers are performing "duplicate" or "unnecessary" workloads. So, while folks are laser focused on optimizing PUEs, there could be substantial savings in simple rounding up and reducing workloads and servers assigned to projects that are no longer valid.

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Are We There Yet

Posted by on Tue, 10/04/2011 - 4:07pm

I was speaking at a energy efficiency event yesterday hosted by Fountain Blue / Applied Materials (A Redwood smart lighting customer) where someone in the audience asked me: Is there any reason we should still be buying fluorescents at this point? Wow, how far, how fast we've come. For those that track lighting, LEDs have long "penciled" for certain applications - such as street lights, or signage, or increasingly, for downlights, spotlights, and mid-power lamps (Par38s).

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What Happened in Vegas

Posted by on Wed, 09/28/2011 - 11:20am

Redwood Systems was a first-time exhibitor at the recent 2011 BICSI Fall Conference and Exhibition, held in Las Vegas Sept 18-22.

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LED Prices to Plummet

Posted by on Tue, 09/27/2011 - 11:49am

Found this good Bloombert article from the summertime on the rapid price reductions for LED lighting. In that article, a very bullish CEO of VantagePoint Partners, Alan Salzman (whose firm has 4 LED investments), was projecting that the present penny/lumen cost for LED chips could plummet by 10x by 2015.

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Net Zero On the Rise

Posted by on Fri, 09/23/2011 - 10:54am

I'm reading more and more about net-zero buildings and their impact on federal and international green building codes and initiatives. Jim Sinopoli, for instance, has a great write-up on greenbiz.com looking at the "moon shot" of these concepts here.

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