Presentation delivered at MassRecycle's 4th Annual Green Office / Green Facility Conference, Bentley University, June 15, 2010. Get invited to next year’s conference by signing up to MassRecycle’s free email newsletter at www.massrecycle.org.
Web & Social Media Analytics Previous Year Question Paper.pdf
Top 10 Products That Save Money - David McDougall, EnerNOC
1. Top Energy Efficiency Products [6/15/2010] Green Office Conference [David McDougall] [Manager of Analytics]
2. Building Are Full of Energy Savings Opportunities “ Less than 5% of commercial buildings in the US are actually commissioned after construction.” - BCS Partners “ Closing our ‘national electric productivity gap’ could curtail up to 30% of our power consumption.” - Rocky Mountain Institute “ The average commercial building uses 26% more energy than needed.” - DOE / Energy Star It’s no surprise that commercial buildings are not as efficient as they could be! There is still ample room to improve efficiency in this space.
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10. RCx Retro-Commissioning A systematic, documented process that identifies low-cost operational and maintenance improvements in existing buildings and brings the buildings up to the design intentions of its current usage. Why?: Because buildings rarely operate as designed.
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13. Example: Air Handling Schedules Change in Schedule Annual savings = $21,000 CO 2 avoidance = 102 tonnes Savings Category No cost Action Recommended Enable auto-control. This unit was habitually overridden, but from continuous monitoring, each incidence was caught with minimal loss in energy savings. As a result of this measure new protocols were established for requesting off-hours usage to further limit this issue from re-occurring. Facility managers often don’t have the time to identify maintenance issues like equipment operating during off-hours. Increased costs are an undetected result. The AHU schedule ( green ) shows a regular daily schedule. SiteSMART found that actual operation (blue) was in constant over-ride.
14. Demand Response Overview Demand response is a cost-effective and reliable way to meet peak demand. The alternative is to build generation and transmission capacity that will be used for only a fraction of a year. 0% 25% 50% 75% 100% Winter Spring Summer Fall % of System Peak Demand 90% >10% of infrastructure costs are spent to meet peak demand that occurs less than 1% of the time Annual US Electricity Demand - % of Peak
15. Demand Response Overview Demand response is achieved when end-users reduce their demand for electricity from the grid in response to market signals. kWh’s 24 Hours $/kWh 24 Hours Reliability/Security – DR can be brought to market more quickly and precisely than comparable generation or T&D, giving grid operators resources needed to better manage reliability NOW while paying end-users to tap into existing resources . Price – DR can dramatically reduce pricing power of well-positioned generators and incentivizes end users to become active participants in energy markets – active participation keeps markets healthy and prices low . Efficiency – Demand response raises the specter of efficiency. Increased end user market participation puts energy back on the business planner’s map and, when properly deployed, can save end-users 20% or more on energy bills. Generation Capacity Demand kW 24 Hours With EnerNOC With EnerNOC With EnerNOC
This top 10 came from Building Commissioning Association Northeast Chapter seminar of May 2007
Script: “ Buildings have complex mechanical systems and their performance, like a car’s, naturally degrades over time. Our SiteSMART services restore and maintain building performance at optimal levels. Our SiteSMART commissioning services are like taking your car to the mechanic – performance is optimized by a thorough, detailed examination and tuning of the individual systems. With SiteSMART MBCx, your building is continuously monitored and detailed recommendations are made to improve its performance. It’s like having a mechanic with a diagnostic computer in the car with you while you’re driving.”
How does an end-user sell what they do not use? Generators of electricity are mandated by FERC to ensure supply to end-users. So that generators are not flying totally blind in their mission to catch up with demand real time, they rely on an end-user’s usage from the previous year at any given moment (i.e noon on June 20). That becomes the end-user’s baseline for the current year. Any number of kWs below that baseline that an end-user can use on command is a nW.