PIONEER - Key Persons


Alexia Retallack

Job Titles:
  • Programs Specialist
Alexia brings extensive communications, regulatory and customer service experience to her role as Customer Service Specialist at Pioneer Community Energy. In her spare time, Alexia supports several community nonprofits and is earning her black belt in karate. A proponent of sustainability and clean energy, Alexia spent more than 20 years with the California Department of Fish and Wildlife and currently serves as a Placer County Fish and Game Commissioner.

Alice Dowdin Calvillo - Chairman

Job Titles:
  • Chairman of the Board
  • Auburn City Council
  • Member of Committee

Brad Koehn

Job Titles:
  • Director of Finance and Administration
Brad oversees Pioneer's business administration, budget and rate-setting components. He has called the foothills and mountains of the Sierras home for his entire adult life, making his go-to activities of hiking and kayaking easy to enjoy right in his own backyard.

Cianan Mauk

Job Titles:
  • Power Supply Contracts Manager

Colleen Tessman

Job Titles:
  • Analyst
  • Finance
Colleen enjoys her role as a Financial & Administrative Analyst with Pioneer Community Energy along with providing a positive interaction with our local communities and its neighbors. She has two values that she strives to maintain, "treat others the way you would want to be treated" and show "human kindness". When not working, Colleen enjoys gardening and spending time with her feline friends as an animal advocate that supports the local SPCA.

David Yarbrough

Job Titles:
  • Member of Committee
  • Placerville City Council

Devin Reaves

Job Titles:
  • Power Resources Manager
Devin brings his skills in economic forecasting and energy trading to Pioneer. He procures renewable and conventional energy, manages resource adequacy and related products. Through his analysis of portfolio risk and value related to power generation, load forecasts and scheduling, Devin develops hedging strategies which support Pioneer's reliable and affordable energy solutions. An avid golfer and snowboarder, Devin also enjoys hiking and the other outdoor activities the region has to offer.

Donald Eckert Jr.

Job Titles:
  • Executive Director
Don manages Pioneer's day-to-day operations and steers the organization as a whole. In his spare time, you'll find Don exploring the richness and diversity of Placer and El Dorado counties. Don, a self-proclaimed history buff, finds "this region to be one of California's greatest places to discover the past."

Eric Acedo

Job Titles:
  • Senior Financial Analyst
Eric supports Pioneer in a variety of financial functions including budgeting, contract administration, power settlements and accounts payable/receivable oversight. Eric enjoys hiking, backpacking, learning new music, tackling DIY projects and spending time with family and friends.

Greg Janda

Job Titles:
  • Member of Audit and Finance Committee
  • Member of Committee
  • Rocklin City Council

Holly Andreatta

Job Titles:
  • Member of Audit and Finance Committee
  • Lincoln City Council

Jim Holmes

Job Titles:
  • Member of Committee

John Hidahl

Job Titles:
  • Member of Audit and Finance Committee
  • VICE - Chairperson of the Board

Kirstin Kolpitcke

Job Titles:
  • Regulatory Manager

Mark Riffey

Job Titles:
  • Director of Public Affairs, Communications and Programs
  • Director of Public Affairs, Marketing, and Programs
Mark prides himself on enhancing internal and external relationships while leading Pioneer's efforts to provide exemplary community and customer service. Mark loves the San Francisco Giants, hiking in the Sierra foothills and sampling the various craft beers made in our region.

Nicole Sena

Job Titles:
  • Customer Care Coordinator

Paige Garcia

Job Titles:
  • Key Accounts Manager
As the Key Accounts Manager, Paige is responsible for supporting Pioneer's commercial customer's energy needs. When she isn't working, Paige enjoys reading, baking, gardening, and hikes with her family, including her two dogs.

Sam Kang - COO

Job Titles:
  • Chief Operating Officer
Sam brings more than 25 years of experience in the areas of energy commodity portfolio planning, transaction structuring, energy procurement and risk management to his role as COO of Pioneer Community Energy, with additional experience in renewable and conventional power project development. Before joining Pioneer, Sam spent many years as an executive for both PG&E and Pacific Energy Advisors, performing portfolio resource planning, transaction structuring, energy procurement and risk management in the areas of renewable energy, energy storage and distributed energy resources. Sam likes to stay busy on his time off and enjoys golf, tennis, SCUBA diving and eating all kinds of food.

Steve Lund

Job Titles:
  • Internal Operations Coordinator
Steve manages the critical area of information technology and facilities at Pioneer. In his free time, Steve plays golf, mountain bikes and coaches local youth baseball, softball and soccer teams. He also serves his community as a volunteer board member on various sports commissions.

Teresa Willock

Job Titles:
  • Board Clerk / Executive Assistant
As a Master Municipal Clerk and the first Board Clerk & Executive Assistant at Pioneer Community Energy, Teresa brings her knowledge and experience to all clerk-related aspects of Pioneer, its Governing Board, and various committees. Teresa holds faith and family in high priority; enjoys the beauty and serenity found on the trail and at the water's edge, and looks forward to adventurous travel opportunities.

Wes Heathcock

Job Titles:
  • Member of Audit and Finance Committee
  • Colfax City Manager

Zachary Boehme

Job Titles:
  • Legislative and Regulatory Analyst