NorthWestern Energy Group, Inc. · NASDAQ:NWE
NorthWestern Energy — Corporate Update (February 2015)
23 slides from NorthWestern Energy's corporate update, February 2015
Slide 1: 2015 February ETAC Presentation: Battery Storage Project and Net Metering Updates
2015 February ETAC Presentation NorthWestern Energy Battery Storage Project and Net Metering Updates June Pusich-Lester NorthWestern Energy – Demand Side Management Engineer
Slide 2: Today's Presentation
Todays Presentation • Battery Storage Project Update – Project and System Description – Testing – Integration • Net Metering Update – # Net meter systems – Customer class – Generating capacity
Slide 3: Project Description
Project Description Battery Storage Project with Renewables Integration • Purchase, install and test small scale battery storage system • Project funded with USB $ in 2011 & 2012 • 50 kW system with 4 hour battery backup • Install on NorthWestern Energy distribution line
Slide 4: Battery Storage System
Battery Storage System NorthWesternt Deu mes ivering @ Bright Future
Slide 5: Project Description: Original and Updated Schedule
Project Description Original Schedule Updated Schedule
Slide 6: Joule.System
Joule.System
Slide 7: System Description: Demand Energy Technology
System Description • Demand Energy Technology
Slide 8: System Description: AC Coupled Storage + Solar
System Description • AC Coupled Storage + Solar
Slide 9: Energy Storage System
Energy Storage System Parameter Value Total system capacity (KW): 50KW Total system capacity (KWH): 200KWH @ 50% DoD AC system max current (@480VAC): 300A RMS Solar Integration: 10 kW (AC Coupled) System DC voltage range (VDC): <600VDC (420-588 typical) System Conversion Efficiency: 80% roundtrip Sy
Slide 10: Inverter
Inverter Parameter Value Parameter Value Inverter High-frequency AC Frequency: 50 Hz Technology: PWM DC Voltage: 280-600 vdc Weight: 450 K standard Max Input Power 105kW AC Voltage: 380/220 VAC (Discharge): Max Output Power 95kW Harmonic Distortion: Current<5%, (Charging): Volt.<3% Power Factor 0 to
Slide 11: Testing
Testing • Currently providing load support to the Helena Division Building – Charge/discharge cycling of batteries – Add solar PV system for charge cycle in spring
Slide 12: Testing: Managing Storage
Testing MANAGING STORAGE • Store Energy at night off-peak • Split the discharge of the system to coincide with 2 hours of morning peak and 2 hours of evening peak. • Operation could be seasonal • Summer operation would be from 4 pm to 8 pm to align with summer peak.
Slide 13: Other Possible Integrations
Other Possible Integrations Type Description Stand Alone Storage Grid.Balancer baseline architecture PV/Storage DC Coupled, grid isolated PV, New sites AC Coupled, Existing PV sites Hybrid AC/DC Coupled, Existing PV Site +New PV/Storage Back-up Power Standby, Soft failover >1 sec. Distributed Genera
Slide 14: Joule.System Dashboard Demonstration
Joule.System™ Dashboard • Demonstration
Slide 15: Battery Storage System Questions
Battery Storage System • Questions
Slide 16: Net Meter Systems
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Slide 17: Statistics on Net Meters
Statistics on Net Meters • Total 1,333 • 1,218 Solar, 110 wind, 5 other • 1,040 residential, 293 commercial Net Metered Cumulative: Thru Oct 2014 Residential • Households vs. Business Commercial Total Installations Photovoltaic Customers 960 258 1,218 Wind Customers 77 33 110 Other Customers 3 2 5 T
Slide 18: Net Meter Requests per Year
Net Meter Requests per Year # Systems 180 158 160 160 145 140 132 120 107 100 93 85 81 80 68 63 60 54 56 49 43 39 40 20 0 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014
Slide 19: Statistics on Net Meters: Installed Generating Capacity
Statistics on Net Meters • Installed Generating Capacity Net Metered Cumulative: Thru Oct 2014 Residential Commercial Total Customers 960 258 1,218 Photovoltaic MW 3.040 1.626 4.665 MWh 4,095 2,114 6,209 Customers 77 33 110 Wind MW 0.402 0.466 0.867 MWh 313 369 682
Slide 20: Installed Generating Capacity (continued)
Statistics on Net Meters • Installed Generating Capacity (continued) Net Metered Cumulative: Thru Oct 2014 Residential Commercial Total Customers 3 2 5 Other MW 0.018 0.070 0.088 MWh 91 368 459 Customers 1040 293 1,333 Total MW 3.459 2.161 5.621 MWh 4,499 2,852 7,351
Slide 21: Statistics on Net Meters: Location by County
Statistics on Net Meters • Location % (Top 10 Counties) County # Renewable Energy Systems % Gallatin 248 24% Missoula 198 19% Lewis and Clark 106 10% Cascade 80 8% Ravalli 58 6% Yellowstone 43 4% Madison 41 4% Silver Bow 39 4% Carbon 24 2% Broadwater 19 2%
Slide 22: Net Metering Questions
i Net Metering ¢ Questions NorthWesternt Energy Delivering « Bright Future
Slide 23: Battery Storage Tour
Battery Storage Tour • Yard adjacent to Helena Division • Hardhats and good walking shoes • Extremely muddy
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