Gian Schelling

Business Dev Manager EMEA

20 March, 2015

Over Yonder Cay & Gasa Island

Small Scale Island Microgrid Case Studies

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Northern Power Business Lines

High-margin Engineering project work

Expansion of IP portfolio

NPS 2 MW & 3 MW turbine

platform

Distributed Turbine Sales

~3x 2012 to 2014

BRIC+ strategy Growth US, EU and Asia

Technology Licensing Technology DevelopmentProduct Sales & Service

Converter and Controls Systems

NPS 100kW

NPS 60kW

Licensing and Royalty Model

Successfully deployed in China and Brazil to date

Wind and Microgrid IP Development

100 kW POC

(1)

45 kVA micro grid

simulators (8)

NPS 100B

(320+)

100 kW CWT

(3) Wind PACT

1.5 MW

2.2 MVA

POC wind

converter

100 kW

DWT (1)

NPS 100C

(First Article)

900 kVA

DG

Interface

1800 kVA

Mobile DG

interface

2.5 MVA

HS-VFD (2)1.2 MVA

HS-VFD (2)

2.x MW

Prototype

(10)

2.x MW

Production

(30+)

550 kVA

Ultra-Cap

Line interactive

UPS

NW 100A

(25)

1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 ….

3.x MW

Prototype (0)

900 kVA

VSG (16)

NPS’ Disruptive Wind Technology

* Based upon utility-class turbine requirements.

Gearbox based…

Most expensive failure = Gearbox

Second most expensive

maintenance item, next to pitch

control systems

Current Turbine Landscape

Current gearless turbines

No proven small wind offerings

Utility options sell at a premium

(Enercon / Siemens)

Generates 4-5% more power

The Northern Power Difference:

Gearless for the small wind market

Licensing for high-growth utility-scale regions

Provider of gearless utility scale offerings into niche markets

Appropriate for Remote Applications

Easy Transport• Standard Shipping Containers

• No Special Permits Needed

Operation in Harsh Climates

Hydrophobic Blade Coating

Flexible Output Control

• Full Power Converter

• Real Power Limiting

• Reactive Power Control

• Function of Voltage

• Function of Frequency

Northern Power Global Footprint

Over 320 NPS Systems Installed Worldwide

Strong installed base in Western countries

Poised to take Distributed Wind to Emerging Markets

Markets in Island Nations, Latin America, South / Central / East Asia, and Africa

characterized by:

High power costs

Weak grid infrastructure

Desire for more sustainability and independence

Distributed generation should be part of the solution

Two Islands – Continuity of Design

OYCGasado

Over Yonder Cay, Bahamas

3 x 250 kW Cummins Diesel Engines

3 x NPS 100kW Wind Turbines

Variable Speed, Stall Control

Solar Photovoltaics

240 kW DC connected to battery

142 kW AC connected

Battery Storage System

6 MWhr VRLA (two days of typical load)

2 x 300 kVA Bi-directional Inverters

DC side fed by batteries and solar

Load

Maximum 389 kW

Average 159 kW

Minimum 50 kW

Dispatchable 50 kW RO desalination system

Major Equipment: Over Yonder Cay

(Screen Shot from Engineering Interface)

Generation Schematic Arrangement

Irene took

blades from 6

15kW turbines

Hurricane Irene August 2011

Hurricane Tracks w/in 30 mi, 1850 to 2013

Caribbean Conditions: Lightning & Hurricanes

Irene stopped NPS

100-21 turbines for a

few hours

0

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100

150

200

250

300

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40

60

80

100

120

8/24/11 0:00 8/24/11 12:00 8/25/11 0:00 8/25/11 12:00 8/26/11 0:00

Wind Speed (mph)

Turbine Power (kW)

Grid Voltage (Vrms L-N)

Voltage at turbine good through storm

Turbine & Grid Operation During Irene

Turbines

shutdownTurbines

enabled

Peak wind at

turbine 112

mph

Gasa Island, South Korea (Gasa-do)

3 x 100 kW Diesel Engines

1 x 200 kW to be installed

4 x NPS 100kW Wind Turbines

Variable Speed, Stall Control

Solar Photovoltaics

20 kW DC connected to battery

63kW & 81kW AC connected

Battery Storage System

3 MWhr VRLA (Hyosung)

2 x 250 kVA Bi-directional Inverters

DC side fed by batteries and solar

Load

160 Households

Water Treatment Plant

Stone Quarry

Major Equipment - Resources

Island Schematic Arrangement

Used with permission by KEPCO and KEPRI

Typhoon Tracks: Gasa Island & Region

Lessons Learned and Applied

Extreme Wind & Lightning Readiness

Appropriate Design

Reactive Functionality

Over-preparation is key for remote islands