Archive for June, 2010

A low-cost solution to strained electric grid

By Kevin Braley on June 22nd, 2010

Orion Energy Systems’ Senior Analyst Joel Sandersen on Wednesday will speak about a simple but impactful concept at TechConnect World 2010 Conferences and Expo, a multi-disciplinary and multi-sector conference addressing advancements in traditional technologies, emerging technologies and clean business practices.

Joel will be joined by speakers from companies like Honda, Sanyo, Lockheed Martin, Samsung, Panasonic and P&G, among others. TechConnect draws more than 5,000 business and technical professionals.

Joel’s presentation will address permanent distributed load reduction, or what Orion coined PDLR. PDLR has a wealth of benefits to end-users and the strained electric grid.

PDLR deploys energy-efficient technology at the point of use and thereby permanently reduces the need to generate, transmit and distribute electricity — a process in which 65 percent of energy is lost.

PDLR is smart grid technology in the truest sense because the load reductions are distributed throughout the system, they are permanent, and they are economical.

And the technology to achieve PDLR is available today in the form of energy-efficient commercial and industrial lighting, controls and direct renewable day-lighting systems. When integrated, these technologies can deliver capacity to the grid, particularly during peak hours, and permanently reduce greenhouse gas emissions.

PDLR has been proven in more than 5,600 facilities in North America, including for corporate giants like Coca-Cola Enterprises, Apple, Sysco Foods, OfficeMax and more. PDLR has delivered more than 527,000 kilowatts to the electric grid, displacing 11 billion kilowatt-hours.

The reduction of energy generation has prevented 7.3 million tons of carbon dioxide from entering the atmosphere, which is the air-scrubbing equivalent of a 2 million-acre forest, or like removing 1.7 million cars from the road.

But the most important aspect is the potential energy reductions of PDLR when the technology spreads across the system. The Energy Information Administration estimates that as of 2003, there were 455,000 commercial or industrial buildings in the U.S. that still utilize traditional, inefficient lighting systems. With an average of 500 lights per facility, there are more than 227 million traditional inefficient lighting fixtures hanging in commercial or industrial facilities.

If each of these facilities replace their traditional lighting systems with high-intensity energy efficient lighting systems — the move would displace more than 55,000 megawatts of power — the equivalent of 111 power plants. And, the payback period in a large majority of the projects is less than two years. The economics make sense.

Even more powerful is that when high-intensity, energy-efficient lighting systems are integrated with the latest in wireless controls and solar day-lighting technology, the capacity delivered could be as much as 81,000 megawatts, or more than 160 power plants. That’s the air-scrubbing equivalent of 111 million acres of trees, removing 97.8 million cars from the road or saving more than 50 billion gallons of gasoline annually, according to the Environmental Protection Agency.

To read the abstract to Joel’s paper, click here.

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Identifying and understanding can lead to leaner power bills

By Joel Sandersen on June 18th, 2010

In a recent article for the Wall Street Journal, author Katherine Boehret discusses some of the technologies that have been developed to assist consumers in going on an energy diet. The general ideas she talks about can easily apply to commercial and industrial customers. For consumers, Boehret’s approach rightly suggests three things: identifying unnecessary power consumption, understanding your power usage, and understanding your technology. These concepts can easily apply to companies looking to reduce the consumption of their energy systems.

1) Identify Unnecessary Power Consumption:

Many companies continue to consume more electricity than they need because that is the way they’ve always done things. The reality is that many effective energy efficiency technologies have entered the market during the past few years, and unlike the conservation technologies of decades past, these technologies do not require customers to sacrifice quality of performance to capture energy savings.

For example, consider commercial and industrial lighting. The traditional lighting solutions for commercial and industrial facilities have been the installation of high-intensity discharge (HID) fixtures. These units can consume, on average, more than 400 watts of electricity to provide light to a facility. Much of that energy, however, is consumed to generate heat (HID fixtures operate at 1,200 degrees F). In the last decade, advancements in lighting technologies has led to fluorescent high-bay solutions, which in addition to operating significantly cooler than traditional HID fixtures, provide equal or greater amounts of light to a facility consuming half the energy of traditional inefficient fixtures.

Identifying energy efficiency opportunities like these will help customers prune unnecessary energy consumption from their facilities without downgrading the quality of life or the productivity of their facilities.

2) Understand your power usage:

In addition to identifying and addressing unnecessary power consumption from the technology in their facilities, businesses also can begin to reduce energy consumption by increasing their understanding of how they consume energy. As Boehret correctly points out for consumers, understanding how a person uses power is important to making meaningful changes to their consumption patterns. The same is true for businesses.

Business should take the time to consider how they use and consume energy in their facility. For example, does their building have hot spots or cold spots that lead the facility to be running both air-conditioning and heating elements simultaneously? Or does the facility let air compressors run all the time to ensure that compressed air will be available on demand for a relatively limited number of tasks? Furthermore, is on-demand compressed air required for those tasks or can the time it takes to start up be tolerated? Or does a facility keep low-use areas fully lit because start-up time (re-strike time) from their existing lights does not allow for shutting the fixtures off during low usage periods because the light will not be available immediately during the limited high usage times?

Reviewing energy consumption either through a system or building energy audit can assist companies in identifying unnecessary power consumption and help to identify and target control strategies that will allow them to further reduce energy consumption.

3) Understand your technology option:

Finally, the last step to companies effectively reducing energy consumption is to identify the options available to them. In this regard, companies should target technologies that can specifically meet their energy reduction needs. For example, if a facility’s primary electricity consumption is in the form of lighting and battery charges (i.e. a typical warehouse facility), targeting the office HVAC system would not be the most effective means of reducing energy use. While the HVAC project would undoubtedly save energy, greater saving opportunities would still exist in the facility’s lighting and battery charging.

Furthermore when selecting technologies, companies should take great care to test the technologies within their facilities — rather than taking the first technology that claims to reduce energy usage that comes along or is recommended by an energy advisor. Testing the technologies in their facility allows companies to see how the technology will perform firsthand. Additionally, this type of testing allows customers to make an objective determination of which technology best suits their needs based on performance within their actual facilities and operating conditions, rather than under an idealized test lab condition.

Finally, when choosing technologies, companies should do so with an eye to the future. In other words, is the technology they are choosing upgradable to allow interaction with other energy savings technologies (like unit controls, building energy-management systems, solar light pipes, programmable thermostats, etc.) or are they one-time improvements? If a technology is not upgradable, this should decrease its attractiveness because it necessarily limits its future energy savings potential, and/or will require significant additional installation and integration costs to be used in concert with other any savings strategies.

These three ideas — indentifying unnecessary power consumption, understanding facility energy use and understanding technology options — are critical for companies to reduce their overall energy consumption. Yet these concepts also can be daunting for many companies. Selecting partners that have a proven track record of delivering guaranteed energy savings can help you reduce the hurdles that many companies face when considering energy efficiencies, and also can help assist in optimizing energy use and consumption.

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