Energy Optimization & Electrical Load Control Our project is a research laboratory building for a State University Campus. Approximately 60% of the total building square footage is dedicated laboratory space. This building type is more energy intensive due to the equipment and code requirements associated with the lab functions. In a unique partnership with the local electrical utility our design team has engineered an electrical system that helps the utility manage their peak loads during the winter and summer months. The overall goal for the design of the buildings electrical and mechanical systems is to optimize the buildings energy load with the utility\'s peak loading. This design ultimately reduces the amount of fossil fuel required to produce energy, and reduces the requirement for capital investment by the utility to construct new power generating facilities. The net energy model is more efficient global model. We would like your consideration of this Energy Optimization & Electrical Load Control Credit ID 1.1 for an innovation point. INTENT: Provide an electrical system that will operate an electric boiler under the time-of-day rates in a way that: 1. Allow the facility to burn gas fired boilers 78% less, reducing emissions from fuel burning by 78%. 2. Assist the utility company in managing their summer and winter peak demands & optimizes the energy rate schedules. 3. Help Duke Power reduce the amount of fossil fuel required to produce electric energy, 4. Reduces the amount of investment for constructing power plants by postponing the higher summer and winter peaks. Provide an emergency/standby generator that operates at Duke Power\'s request to: 1. Assist company in managing summer and winter peak demands & optimizes on the energy rate schedules. 2. Help Duke Power reduce the amount of investment required to construct power plants by postponing higher summer & winter peaks. REQUIREMENT FOR COMPLIANCE: Install an electrical system with the components that meet the rate schedule requirements for South Carolina Rider SG for Standby Generator Control & South Carolina Optional Power Service, Time-of-Use Rate Schedule OPT. 1. Reduce Peak Demands to the following hours complying with Rate Schedule OPT a. Summer months defined as June 1- September 30 from 1:00PM - 9:00PM Monday-Friday b. Winter Months from October 1-May 31 from 6:00AM-1:00PM Monday- Friday 2. Provide standby generator control to Duke Power complying with Rate Schedule Rider SG a. Provide standby generator with at least 200KW average capacity on an annual basis. b. Provide Duke Power On Request control of generator on a guaranteed response basis. c. Commit to operate during a minimum of 80% of the control periods annually. SUBMITTALS: The attached drawings are as follows: 1. SCAE-0200 Overall One Line Diagram 2. SCAE-0210 Emergency/Standby One Line Diagram 3. South Carolina Optional Power Service, Time-of-Use Rate Schedule OPT 4. South Carolina Rider SG for Standby Generator Control DESIGN APPROACH: Comply with Rate Schedule OPT, Time of Use: 1. The design required the addition of gas boilers an electric boiler to provide hot water for the facility and process heating requirements. Only gas or only electric boilers would be incorporated if the Time of Use rate was not used. 2. Additional control & metering equipment was added to disconnect the electric boiler from service during the on-peak demand times, & monitor power usage during on-peak and off-peak times. 3. Provide standby generator control to Duke Power Company complying with Rate Schedule Rider SG: 4. The design required additional control of the standby generator by the electric utility. Controls were added that would allow the utility to signal the generator to start and transfer loads from the utility onto the generator until the utilities critical load period is complete. The design required at least 200kW of load to be picked up onto the generator.
The use of a generator for peak shaving is a legitimate energy cost saving and capacity reduction measure. Identical rate schedules must be used in both the proposed and budget buildings for energy modeling (see EAc1.5 CIR Ruling dated 3/24/04). Note that using a time-of-use (TOU) rate will only capture a portion of the potential benefits to the project and the environment under EAc1, since the budget building must also use the TOU rate for modeling purposes. The peak shaving use of the generator does not count under EAc1. Since the use of a generator to shave peak demand is not a regulated component of ASHRAE 90.1, any savings/environmental benefits could qualify as an innovation credit. Be sure to quantify the benefits. Claims of emission reductions need to be based on comparison to a reasonable baseline in your region. Claims made on dollar savings alone should be equal to at least 5% of the total building energy use (see previous IDc1.1 CIR Rulings dated 4/17/03 and 8/16/02). Applicable Internationally.