The Evolving Microgrid Market: Building the Business Case Coast-to-Coast

March 24th, 2015 | 10:00am –11:30am

Panelists: Matt Koenig, Princeton Power Systems, Director of Sales Greg Thomson, Clean Coalition, Director of Programs Charles Mee, California Public Utilities Commission, Senior

Utilities Engineer Laura Castellini, National Park Service, Golden Gate National

Park Recreation Area, Sustainability Coordinator Moderator: Christopher Dann, PwC Strategy&, Vice President

@AGRION

Making Clean Local Energy Accessible Now

2

Hunters Point Substation Boundary Hunters Point Community Microgrid Area

Bayview

Hunters Point

Making Clean Local Energy Accessible Now

3

Hunters Point Community Microgrid Benefits:

50 MW New PV = 25% Total Energy

Energy Cost Parity: Solar vs. NG, LCOE

$260M: Spent locally vs. remote

$80M: Avoided transmission costs

$30M: Avoided power

interruptions

Economic $200M: New regional impact

$100M: Added local wages

1,700 Job-Years: New near-

term and ongoing employment

$10M: Site leasing income

Benefits from 50 MW New PV Over 20 Years

Environmental 78M lbs.: Annual

reductions in GHG emissions

15M Gallons: Annual

water savings

375: Acres of land preserved

Example: 180 Napolean St. • PV Sq. Ft = 47,600 • System size = 714 kW

Example: 1485 Bay Shore • PV Sq. Ft = 37,800 • System size = 567 kW

Example: 50 avg. rooftops • Average PV Sq. Ft = 343 • Avg.system size = 5 kW

Commercial: 18 MW Parking Lots: 2 MW Residential & MDU: 10 MW

50 MW Total = Existing Structures @ 30 MW + Redev Zone @ 20 MW

4

Photovoltaic Panels (959)

Batteries

Inverters (8)

Generators (2)

Building Meters

Island Load

Electrical Flow

• Diesel generators can run the island directly with AC power while charging the batteries through the inverter

• PV and Batteries run DC power through the inverters

• System controller prioritizes power source as 1) Photovoltaics 2) Battery 3) Generator

PV System Schematic

PV System Overview

6

Number of PV panels : 959 (Sunpower 318 watt):

Total system capacity: 305 kW

Lead-acid gel batteries: 480 cells (two strings of 240)

Generators (two alternating): 220 kW each

7

8

9

10

11

-

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20,000

30,000

40,000

50,000

60,000

70,000

80,000Ja

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(kW

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Alcatraz Island Total Energy Production

Generators

Solar PV

13 © Princeton Power Systems | 2014

THE EVOLVING MICROGRID MARKET: BUILDING THE BUSINESS CASE COAST-TO-COAST.

MICROGRID CASE STUDIES: THEN AND NOW

princetonpower.com | mkoenig@princetonpower.com | @PrincetonPower1

Matt Koenig, Director of Sales

14

Company Overview

Princeton is a leading global designer and manufacturer of power converters and energy storage systems for:

Microgrids Energy Security, Off-grid “Island” Power, Hybrid

Solar/Wind/Diesel, Grid ancillary services

Energy Demand Management Commercial and

Industrial Energy Storage Systems

V-2-X EV Fast-Charging, Zero-emission solar charging, EV to

provide Home, Building, Grid support

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Partners and Featured Customers

Automotive/Aerospace

Smart Grid

Utility/Battery

Government/Military

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Certified testing lab.

Test/ certify high-power and high-voltage electrics to third-party standards

UL 1741, IEEE, CSA, CEC and EN

Work closely with certifying agencies

Particular expertise in North-American compatibility

Highly knowledgeable in interoperational requirements

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Reliable Electric Power to Remote Areas

Reduce and supplement fossil fuels.

Nigeria Kenya Equatorial Guinea Haiti Jamaica Bermuda Hawaii Fiji American Samoa

GTIB BiGi DRI

Demand response DRI-10 DRI-10CE (European)

DRI-100-2DC DRI-100-3DC

Battery-integrated Grid-tied BIGI-250

2 Port | 3 Port | 4 Port.

Grid-tied Bidirectional GTIB-30-480 GTIB-30-208 GTIB-100 GTIB-100CE

(European)

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Commissioned by CTC to design 1st fleet of bidirectional EV charging stations 13 CHAdeMO charging using the

bidirectional, multi-port GTIB-30

Groundbreaking solution in electrical utility ancillary service markets Worked directly with EV OEMs and

3rd party fleet management software aggregators

Driving cost reduction and revenue to partially offset EV fleet lease expense

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Case study: Los Angeles Air Force base.

Part of California’s “Permanent Load Shift” program, a statewide effort to reduce peak demand on the electrical grid.

The 500-kWh system provides backup power in the event of power outages.

10-20 percent of the center’s daily electrical consumption shifted to off-peak hours

The system’s reliability and multifaceted safety features were an important factor

Discovery Science Center will see reduced electrical bill

Owned by Southern California Edison (SCE)

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Case study: Discover Science Center.

Solar array on the roof Informational Kiosk AC Grid-forming Inverters

307 kW Solar 400 kW / 2 MWh Battery 2 x 250kW Diesel Gen Princeton Site Controller Princeton GTIB-100Inverters

Alcatraz Island Microgrid: Summary

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Alcatraz Island Project Timeline – Origins in 1953 (!)

- SMUD Solar Array would reduce diesel use and trim electricity costs (by $0.01/kWh) - Roof stanchions installed on the New Industries Building, but

- Protests from Historical Landmark Preservation Society brought the project to a halt - SMUD dropped out

1953: Anchor severs underwater transmission line to Alcatraz, just before the prison closed

~1976: Re-opened by National Park Service with diesel generation

1995: NPS, NREL contract with SMUD to install Solar on Alcatraz

2009: ARRA Funding enabled the $3.6MM Solar project to continue… - Greatly improved technology options = more PV in a smaller space - Positioned to be non-visible to island visitors or the shore - Inverters and Controls to operate and manage the entire island

GTIB-100 2-port Bi-directional

100 kW, off-grid

Control Technology: Site Controller and GTIB-100

Product Features o Bi-directional o Grid-tied / Off-grid o Advanced Battery, Solar, Microgrid Functions o UL 1741 & CE Listed

Site Controller Central Monitoring & Control Platform

Product Features o Monitors and Manages Microgrid Assets o Central Access Point o Microgrid Control Functions (e.g. Gen-Set synch)

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Case study: Alcatraz microgrid.

Total days of runtime 558 Total system operating hours: 13,392

Total GTIB-100 run time hours: 107,136

2013 Operating Data Total solar kWh: 376,061

Average solar kWh per week: 6,964

Total generator kWh: 403,450

Average generator kWh per week: 7,471

Average island load kW: 74 Total annual consumption kWh: 654,523

Generator output % by kWh: 61.6% PV output % by kWh: 57.5%

Total days of data: 378

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Island Microgrid Control Scheme

If Battery approaches minimum charge, Gen-Set is automatically turned on, synchronized

Gen-Set operates at peak efficiency to charge batteries and support Island Loads Once batteries are topped-off, Gen-Set is automatically shut down

307 kW Solar Array on the Cell house Building produces maximum power and directly powers Island AC Loads

Excess Solar Energy charges a 2 MWh battery bank

If Battery approaches maximum charge, Solar output is automatically curtailed (rare, but happens occasionally in the summer)

27

Economics of the Alcatraz Island Microgrid

Cell House roof renovations Historical preservation requirements Design-in-place battery, converter room 2010 PV panels ~$3/W

Early pilot of new microgrid technologies Achieved primary goal of fuel savings and Increased reliability

Electricity cost in 2010: $0.76/kWh Electricity cost today: ~$0.71/kWh

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Site Controller Dashboard-Alcatraz Island Microgrid

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Annobon Island Networked Microgrid

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Annobon Island Networked Microgrid

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Annobon Island Networked Microgrid

• 5 MW solar

• 3 MW / 6 MWh GE Durathon Batteries

• 20 x BIGI-250 3-Port Converters

• Princeton EMOS ™ Microgrid Controllers

• 5 MW Taylor Diesel Gen-sets

• Eaton Switchgear

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Annobon Island Networked Microgrid Architecture

• Actual “GRID” • 22 kV underground

distribution backbone. • 3 discrete, networked,

microgrids(sites) • 1mW, 1.5 mW, & 2.5 mW

PV. • Correspondent ESS,

EMOS, and Gensets @ each site.

• EMOS master @ distribution/SCADA level.

• New, underground fiber optic comm’s backbone

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Annobon Island Networked Microgrid Architecture

Hotel Airport

Village

Master Grid Level EMOS

• Energy Management Operating System – Microgrid Design Software – Software interface for configuring the monitoring and control

parameters for multiple assets on-the-fly – Drag-and-drop interface for quick failsafe configuration – Small-footprint Industrial PC-based configurable software (Site

Controller)

• Site Controller – On-site Microgrid Controller – Hardware platform that runs EMOS™ and Asset-Control

Software Modules – Monitors and Controls Microgrid Assets (Generators, Batteries,

Load Relays) – Remote and local access control, monitoring, and data storage

and analysis

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What are EMOS™ and the Site Controller?

• Create a self-configuring microgrid with an electrical “one-line”

• A software application that runs on a computing platform consisting of:

1) “Drag-and-drop” graphical user interface (GUI)

2) Library of device drivers (inverters, batteries, generators TQG/AMMPS)

3) Core Energy Management Application

4) Historical Performance Database

Princeton Power Systems – Kenya Power System

Connected: Remote Panel Logged In: Dr. Stein Sytem Time: 13 Nov 2013 14h45

File Edit HelpTools HelpToolsOptions

Princeton Power Systems – Kenya Power System

System Builder

Batteries

Power Meters

Inverters

INV1

GTIB30

KOKAM

BAT1

PV ARRAY

PV1

MET1

DRI100 METER LOAD

PV ARRAY

--- KWLOAD

--- KWPAR1 PAR2

GRID CONNECTED

DEMAND RESPONSE MODE

NO FAULTS

STATUS

MODE

FAULTS

GTIB100

DRI10 DRI100

BIGI250 CA15

SART STOP

System View

Trends

Events

Advanced

601

602

603

604

606

605

607

608609

EMOS™ Overview

• Prioritize Clean Energy Generators (e.g. Solar)

• Manage Battery(s) State-of-Charge

• Manage Gen-set On/Off/Synch

• Manage Load Shedding Events

• Manage the addition or removal of Assets

• Allow central monitoring and control of each asset and the aggregated system

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Core Energy Management Application

• View performance data from individual assets, and aggregated system

• Allows for seasonal adjustments, optimizing battery operation, load shedding operations

• Minimize Gen-set operating hours

• Better predict future fuel needs

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Historical Performance Database

• SiC based Power Stages • GaN Based Power Stages • V2X • Excision of Magnetics (Transformerless) • Size Minimization

– Wall Mount GTIB-30 & 100

• Broader Power Range – BiGi 100 and 30 – BiGi 500 Native Gtib-500

• UL Certified to 800 VDC – Currently GTIB-100

• NEMA 3R – Full Product line implementation.

38

Princeton Power Product Innovation Plan

Thank you

Matthew Koenig Director of Sales mkoenig@PrincetonPower.com

39 © Princeton Power Systems | 2014

mkoenig@princetonpower.com www.PrincetonPower.com +1 609.955.5390 x 147

The Evolving Microgrid Market: Building the Business Case Coast-to-Coast

March 24th, 2015 | 3:00pm –4:30pm

Panelists: Matt Koenig, Princeton Power Systems, Director of Sales Greg Thomson, Clean Coalition, Director of Programs Charles Mee, California Public Utilities Commission, Senior

Utilities Engineer Laura Castellini, National Park Service, Golden Gate National

Park Recreation Area, Sustainability Coordinator Moderator: Christopher Dann, PwC Strategy&, Vice President

@AGRION