ON-SITE TALL TOWERS FOR LOW COST WINDPOWER

ON-SITE TALL TOWERS FOR

LOW COST WINDPOWER

Eric Smith, CEO

Eric@KeystoneTowerSystems.com

1989 1997 2013 2004

But the roads do not…

Ideal size

Transportable

Forcing new tower designs

Today’s options:

Short Skinny Expensive

Keystone Prototype

Pipe Industry Solution:

Spiral welding

Automated in-field production

But only cylinders!

Keystone’s

Tapered Spiral welding Enables production of wind turbine towers

Developer

Keystone

Tower Mfg Contractor

OEM

• 50% cost of most expensive

component

• Cost competitive wind

• Easy to integrate

• 2x more

developable land

• Increase project

IRR 1-2% points

• Brings wind to

high value markets

• € 9.3 B global tower industry today

• Rapidly growing segment

• Almost universally outsourced

Keystone Tower Systems

R&D Partners

Eric Smith, CEO • MIT MS EE, MS ME

• Wind design and innovation consultant

• MIT wind turbine engineering instructor

Michael Caron, Tower Design • 14 years R&D management, design and

manufacture of wind towers

• Developed market leading 140m tower

for Vestas

Alex Slocum, Machine Design • MIT PhD ME

• MIT Mechanical Engineering professor

• 30 years experience in machine design

and alternative energy

• Currently in Denver, CO

• 10 full time employees

• 25+ years wind industry experience

• 50+ years machine design experience

• €3.7M in funding (US Gov + Private) Chris Babcock, Operations • 7 years experience in wind technology

development and management

• ARPA-E commercialization scholar

• MIT MS System Design & Management

• Validated design & economics

• Fundamental patent awarded

• Working prototype (partial scale)

producing and testing tower sections

• Begun system integration and construction

planning with top European companies:

2015

Full scale

mill

2012

Proof of

value

2013

Prototype

mill

2016

140m

tower

2017

Mobile

operation

2018..2021

Multiple

operations

TO DATE

€6.2M round (Q4 2014) ~50% already secured

• Full scale spiral mill

• Establish European HQ

• Hire experienced sales and finance

professionals

€9.3M follow-on round (Q1 2016)

• Full mobile operation capable of

140m+ tower, 1/day

• 140m demonstration tower

• Certification

2012

Proof of

value

2013

Prototype

mill

2015

Full scale

mill

2017

Mobile

operation

2018..2021

Multiple

operations

2016

140m

tower

FUNDING NEXT PHASE

Questions?

Eric Smith, CEO

Eric@KeystoneTowerSystems.com