Alfred Lam

Alfred K.Y. Lam, President & CEO, Guam Energy Solutions, Inc. Alfred Lam has over 40 years of experiences having owned and operated many successful business on Guam. With that wealth of knowledge, Alfred founded GESI in 2010 to bring energy efficient products to Guam as a way to help our island’s population save money due to the high cost of power.
Under his leadership, GESI has grown from providing Solar Photovoltaic Systems to a fully integrated energy solutions provider.
Current Positions:
• President & CEO Green Energy Solutions
•  Founding member of Guam Renewable Energy Association.
•  Chairman of the Board – Ambyth Group Inc.
•  Ambyth Shipping Micronesia, Inc.
•  Ambyth Shipping & Trading Inc.
• Liner Services and US Swire Shipping, HUB Line Malaysia and  Waterman Line USA.
•  Ambyth Cargo Forwarders
• Representative for Panalpina handling Cartier, Christian Dior and
• Representative for Lynden, handling Avon
•  Ambyth Logistics
• Major clients – Coca Cola, Louis Vuitton and Ross Stores
•  Ambyth Trading
• Metal, Steel Wire Rope & Rebar (worldwide)
•  Seafix Inc.
• Ship Repair & Maintenance for Proposition Vessels for DOD US Navy in Saipan.
•  Securewest Inc. – Security Service
•  TNT Courier Service (worldwide)
Civic Activities:
2010: Ambassador of Good Will for Guam
2007 – 2009: President of Chinese Chamber of Commerce of Guam
2006: Minority Small Business Champion of the year
2005 – 2007: President of Chinese Chamber of Commerce of Guam
2004 – 2005: President Chinese Merchant Association and Board Vice Chairman of Guam EPA
2003 – 2004: 1stVP Chinese Merchant Association and Board Member of Guam EPA
1982 – 1982: President of Asia Pacific Lion Club
1974 – 1976: V.P. Guam Chinese Association

Lynn Scott

Lynn Scott joined GESI in November 2014 as the Vice President of Sales and Operations. With 23 years under his belt as a mortgage banker, Lynn brings the financial experience and knowledge to GESI as a Managing Partner and the Operations Manager. Lynn is a former Vice President for BankPacific, Senior Lending Officer for Chase Bank & Washington Mutual.

Lynn was promoted to Chief of Operations after successfully opening up the LED lighting, Energy Audit, HVAC-R & Solar Thermal Divisions for Guam Energy Solutions.

He was the key driving force behind GESI being granted the exclusive dealership rights to all SolX Energy’s patented product lines primarily ThermX solar thermal collectors.

Lynn is also a founding member and board member of Guam’s Renewable Association: 2015-2017

Andrew S. Bustamante

Title: Journeyman HVAC-R Technician

Duties: Install, repair, maintain all types of Air-conditioning and refrigeration systems ranging from residential to large commercial systems, and to achieve the most energy efficiency the system has to offer. To provide High Energy Efficient products.


EPA Universal Certified
Journeyman Certifaction
HVAC-R Certified
R410 Certified
P.M. Tech Certified
CPR Certified
Solx/ThermX Certified
RME License
Midea VRF Certified

I love spending time with family, DYI projects at home. Spending time outdoors hiking, fishing and hunting.

Rey Senior

Duties: Responsible for Initial Design, Site Inspections, Installation, Service and Repairs .


11 years experience in HVAC-R industry.
Certified CPR/First Aid/AED
Certified Journeyman HVAC-R Technician
Specialize in Commercial Kitchen and Refrigeration
Certified Solx, ThermX, Midea, VRF,

About ME: I am a family oriented. I live my life humble, honest and straight forward. I am a true believer of karma. I strive to be the best example of love and respect to my children.

Jerica Cruz

Title: Assistant Operation Manager

Duties: supervising daily operations of the company. Develop productive, profitable and achievement oriented working environment for employees. Address operational issues and concern in a timely manner.


Certified CPR/First Aid
OSHA Training
Firewatch Trained

About ME: I enjoy spending time with family, going to beach and Jiu-Jitsu.

Kelly Basilia

Title: Executive Assistant

Duties: Provide administrative support to ensure efficient operation of the office. Support Managers and staff through various task related to organization and communication.


Certified CPR/First Aid
Firewatch Trained
H.R. Training

About ME: I cherish spending time with family and friends closes to my heart

Bobbie San Nicolas

Title: Executive Assistant

Duties: Provide administrative support to ensure efficient operation of the office. Support Managers and staff through variety of  tasks related to organization and communication.


Bachelors Degree in Business & Management
Certified CPR/First Aid
OSHA Training

About ME: I enjoy quality time with family, watching my favorite T.V. shows, crochet, paddle boarding and exercising.

Largimas “Pinki”Lujan

Title: Sales Executive

Duties: Create professional relationships with commercial accounts. To provide superior service and state-of-the-art LED commercial grade lighting solutions, air conditioners and solar thermal products


Certified CPR/First Aid/AED
COPE Health Coach Certification
Zumba, Aqua Zumba,Hot Hula and Yoga Certified
University of Pittsburgh Group Lifestyle Certified
Certified Health Coach for Optavia

About ME: Former board of Directors : The Salvation Army, Sanctuary Inc., Tourism Education Council, Americorps, ServeGuam Commission, Beauty World LTD and Payless Community Foundation.

David R. Bustamante Jr.

Title: HVAC Apprentice

Duties: Install and maintenance on residential and commercial air conditioning systems


Certified CPR/First Aid/AED
Solx Ceritified (ThermX)
OSHA Safety Consultant (DOL)

About ME: I like spending time with family and going to the beach.

Adrian Tomeldan

Title: Technician 1

Duties: Install, maintain and repair all types of residential air conditioning systems


Certified EPA Universal
Certified CPR/First Aid
Certified Solx, ThermX

About ME: I love spending time with family, DYI home projects, watching football and basketball games.

Mark Quenga

Title: Energy Audit Manager

Duties: Program Manager for GESI conducting Energy Audits, managing large operations and the GESI Safety Program.

About ME: A native-born son of Guam who graduated from John F. Kennedy High School and University of Guam with a BA in Psychology and a commission as a U.S. Army Field Artillery Officer.  He traveled the world on Active Duty and retired as a Lieutenant Colonel from his last station in San Antonio, Texas. During a break in active military service, he entered the Department of Homeland Security, Customs and Border Protection serving in Laredo, Texas as a U.S. Border Patrol Agent. Mark started several businesses on Guam with an extensive knowledge and background in operations and planning.

David M. Contreras

Title: Level II Technician


Duties: Install and repair air conditioner, assess any situation that comes my way and attempt to conquer it. Learn all that I can.


Certifications: HVAC (4 years at the Guam Trades Academy), Electrical (2 years at GCA), Lifeguard, CPR, Rigging, Scaffolding (Competent), Sky climber, Carpentry, EPA 608 (Universal).


I try my best to make sure my work is done to the best of my ability. Quality matters to me. If you are not satisfied with my work, let me know how you would like it done.

Benjamin A.S. Cruz

Title: Level III Technician


Duties: Perform preventive maintenance on various units from air conditioning to kitchen equipment. Install various types of air conditioning units, troubleshoot units and repair units when it’s necessary.


Certifications: Completed safety technology course with the Guam Trades Academy. Took four years of HVAC class with the Guam Trades Academy. Took the EPA test with the Trades Academy and received universal license upon completion.


I’m a father of four, I have two boys and two girls. My hobbies are BBQ and spending quality time with friends and family. I’m a father who works hard to provide for his family and also someone who strives to do good in life.

Justin Naito

Title: Energy Assessment Technician


Duties: Help businesses reduce their energy usage by offering the most cost-effective energy conservation solution.


Degrees: Degree in Business Management and Finance, CSU Los Angeles


Black Belt Karate Practitioner, I like outdoor activities water, snow and on land. Weird thing about me is that I like watching movies once and I can eat food cold. I am open to learning new experiences and because of that, I try to read and study on my off-time. One of my favorite instrument is the piano.