Lighting Controls in Buildings, Demand Management and Microgrid Development

Lighting control systems can help microgrids shed load, improve demand response, use resources efficiently, and offer greater overall reliability.


>” […] Lighting Control Facilitates Load-shed Strategies

Load shed, or the ability to quickly reduce electricity use during peak periods, is critical to ensuring microgrid reliability. Because lighting uses a considerable proportion of building peak electrical loads (30% of peak electricity),1 and because reduced light levels deliver immediate reductions in electricity, lighting control is one of the simplest and most predictable demand response solutions.

The reduction of lighting load also provides a reduction in HVAC cooling load during the summer, which is the most common peak electrical period.  Furthermore, since dimming is typically unobtrusive when it is executed over a period of time (as little as 10 seconds), lighting control is a viable option for immediate emergency response.

Dimming as a load shed strategy is highly effective because the human visual system has the ability to accommodate a wide variety of light levels with minimal effect on the occupants2,3.  When a demand reduction is required a gradual dimming of electric lighting can reduce light levels by 35 percent before 20 percent of the occupants attempt to intervene.  Response time is essentially instantaneous, typically has little impact on occupant comfort, and demand savings from lighting are more predictable than those from HVAC response.

Light management systems have the capability to automatically trigger a demand response event from a utility signal or from time clock scheduling. Therefore, a predictable and effective demand response strategy can be automatically implemented while going virtually unnoticed to the building occupants.

Energy codes, standards, and green building certifications such as ASHRAE (American Society of Heating, Refrigerating, and Air Conditioning Engineers) 90.1, IECC (International Energy Conservation Code), California Title 24, ASHRAE 189, IgCC (International Green Construction Code), or LEED (Leadership in Energy and Environmental Design) now include lighting controls as a part of a whole-building energy strategy.

There are subtle differences for each code/standard/certification, but some general requirements and/or credits include: required lighting control for most areas (manual or automatic), automatic lighting shut-off, some automatic receptacle shut-off, daylight controls for daylit spaces, automatic shut-off of exterior lighting during daytime hours, and various levels of occupancy/vacancy control. As a result of buildings updating their basic lighting control infrastructure to meet code, they are increasingly becoming capable of connecting to a microgrid, without the need for additional significant investments.


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6 Schemes to Implement for Plant ISO 50001 Certification

During a webcast  […] representatives from the US Department of Energy and Underwriters Laboratories walked through the details of the just-released energy management standard, and how companies can get on board, quickly.


>”When the standard achieves widespread adoption, it’s estimated that ISO 50001 could influence up to 60 percent of the world’s energy use.  […]

ISO 50001 requires continuous improvement, but not specific requirements, which is where the ITP program comes in, to have specific requirements of improvement. The value of the certification, Scheihing said, is that for the first time it provides a framework for continual improvement for facilities on energy performance, and across the entire organization.

To be certified, you have to conform to the ISO 50001 management standard, and you have to improve your energy performance, and get both aspects certified under a third party. There are 24 companies working in the pilot mode of ISO 50001, across all types of manufacturing sectors and at all sizes.

Between 2008 and 2010, five initial facilities in Texas were piloted, and have been certified to date. Scheihing said the energy improvements achieved at the facilities ranged from 6.5 percent to 17.1 percent over a three-year period.

Among the initial feedback from the pilot project include the benefits of having a cross-functional plant energy management team that goes beyond just operations or engineering means that energy management becomes a shared responsibility, and that makes it much easier to incorporate significant changes in energy use.

One of the biggest shifts that the pilot projects found was that as a result of going through ISO 50001 certification, energy management became a way of doing business, instead of a project-by-project undertaking.  […]


Scheihing laid out six steps that any organization can take to get started on ISO 50001 today:

Secure support from top management;Collect, track, and analyze energy data;Identify key energy uses;Establish a baseline;Identify energy-saving opportunities;Prioritize opportunities

The Department of Energy has created a new website for energy management, which lays out an overview of ISO 50001 and offers case studies and tools to help companies undertake those first steps.

Jerry Skaggs from UL DQS followed on Scheihing’s presentation to walk through each of the six steps, as well as a checklist for organizations to follow once they’ve gone through the process to ensure proper implementation and follow-through.

In the end, there are a number of benefits to effectively implement an energy management system, including:

• Reduced operational and overhead costs lead to increased profitability
• Reduced air emissions, such as GHGs
• Increased efficiency of energy sources
• Increased assurance of legal, internal compliance
• Variables affecting energy use and consumption are identified
• Increased understanding of energy use and consumption via defined methods, processes of data collection

UL DQS, which brings the Management Systems Solutions division of Underwriters Laboratories together with DQS, a German management certification company, offers a number of specialized services for helping companies assess and implement opportunities for energy management, including ISO 50001 certification.  […] “<

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