Meet the team


Jan Pepper

Chief Executive Officer

Jan has over 30 years of energy and utility experience, with a focus on renewable energy contracting and financing. She formerly worked at Silicon Valley Power, and has founded four energy-related start-ups.

Jan was elected to the city council of Los Altos in 2012 and served as Mayor from December 2014 to December 2015. She was re-elected in 2016 for a second four-year term.  She served on the Board of Directors of the Bay Area Air Quality Management District from 2013 to February 2017.  She earned a BS in civil engineering and an MBA, both from Stanford University. Jan is a registered professional engineer in California.

At APX, she developed and pioneered the first use of renewable energy credits, which are now the standard currency for trading and tracking renewable power. At Clean Power Markets, her company designed and implemented the successful Solar Renewable Energy Credit (SREC) program for the State of New Jersey.

Finance and Administration

Andy Stern

Chief Financial Officer

Andy has a broad senior management background in leading finance and operations functions in several industries. At PCE, he leads all finance and HR. He is also responsible for source financing, and supporting the Audit Committee and Board of Directors in oversight of PCE’s finances.

As the Chief Business Officer of Rocketship Education, a large and fast-growing charter management organization, Andy was responsible for all non-academic functions including finance, operations, human resources, legal, and led the financing and construction of the organization’s extensive real estate holdings. Before Rocketship, Andy served as the Chief Financial Officer at several fast-growing companies in the high-tech industry, overseeing domestic and international teams, and leading multiple venture capital financing rounds.

Andy has lived in San Mateo County for more than 30 years. He earned a Bachelor of Science from U.C. Berkeley, and a Master of Business Administration from San Francisco State University.

Hailey Wu

Senior Financial Analyst

Hailey leads financial planning, modeling, analysis and reporting. Prior to joining Peninsula Clean Energy, Hailey was a Structured Finance Associate with the Industrial and Commercial Bank of China in their New York Office.

While there, she supported the execution of 23 project finance transactions in the energy industry. After moving to California, Hailey worked at SunPower and GlassPoint Solar as a Project Finance Analyst, financing utility scale solar projects. She has a passion for renewable energy and wants to make the world cleaner and greener!

Hailey holds a Master of Finance from MIT Sloan School of Management, and a BA from Purdue University where she majored in Accounting and Management with a minor in Finance.

Shayna Barnes

Operations Specialist

Shayna provides administrative support to Peninsula Clean Energy staff and works collaboratively with all teams to ensure smooth office operations.

Shayna graduated with a BA from Cornell University. Prior to Peninsula Clean Energy, she worked as a Research Associate at a food microbiology start-up in San Jose. A Bay Area native, she is excited to be back home and contributing to her community’s efforts to mitigate global climate change.

Kim Le

Senior Manager of Data & Technology

Kim is responsible for our data warehouse infrastructure and analytics platform. She has successfully developed and managed data systems for a range of applications from startup to Fortune 500 companies.

Prior to Peninsula Clean Energy, Kim led the development of data analytics for Ridecell, a mobility platform for ridesharing, car sharing and fleet operations. Prior to that she served for eight years at multi-national AECOM, providing data analysis and simulation for global logistics and operations projects. Kim received her B.S. in computer engineering from the University of California, Davis.

Strategic Accounts

Sapna Dixit

Strategic Accounts Manager

Sapna supports Peninsula Clean Energy’s major commercial and industrial customers. Her responsibilities include account services management as well as supporting the implementation of commercial programs.

Sapna previously worked at Pacific Gas & Electric Company where she was instrumental in implementing the Economic Development and Sustainable Communities programs, which helped Bay Area communities create jobs and reduce greenhouse gas emissions. She has experience with large commercial utility programs, local government climate action planning, and business development. Prior to her work in energy, Sapna held positions in project and product management for start-up and technology firms. She has a B.S. in Computer Science from the University of California, Los Angeles, and an M.B.A. from San Francisco State University.

Customer Care

Leslie Brown

Director of Customer Care

Leslie serves as an advocate and energy advisor for all PCE customers, providing oversight for customer account management and support in customer participation in PCE programs.

Leslie comes to PCE with over 17 years of customer service and marketing experience from Silicon Valley Power (SVP), the City of Santa Clara’s municipal electric utility. At SVP Leslie primarily managed renewable energy programs, overseeing 15 MW of customer installed solar generation while also leading the utility’s award winning voluntary REC program Santa Clara Green Power.

Michael Totah

Senior Analyst, Account Services

Michael works as a liaison to our back-office provider and PG&E for account management, data, and billing operations. He manages Peninsula Clean Energy’s rates and implements rate changes. He also acts as an energy advisor for Peninsula Clean Energy’s customers.

Before joining Peninsula Clean Energy, Michael helped build and launch San Francisco’s CCA program, CleanPowerSF, working on account management, billing operations, and presenting at local community meetings. Growing up in San Mateo County, he is now excited to give back to his local community. Michael received a BS from Purdue University in Natural Resources and Environmental Science.

Energy Programs

Rafael Reyes

Director of Energy Programs

Rafael provides strategic direction to PCE’s programs with an emphasis on transportation, building electrification, and load shape strategies.

Rafael’s career includes nearly 20 years in clean energy policies and programs as well as 15 years in high-tech project management, system architecture and business consulting.

Rafael has led and supported nearly $80 million in clean energy projects through his prior roles as VP of Community Initiatives at Prospect Silicon Valley and founding Executive Director of the Bay Area Climate Collaborative which merged with ProspectSV in 2015. His projects included an advanced solar-storage pilot, EV infrastructure and fleet deployments, vehicle-grid integration pilots, LED streetlight upgrades and the nation’s largest EV ride and drive campaign.

Rafael was born in Peru, is fluent in Spanish, and has a Master’s degree in Anthropology from UC Berkeley and a dual computer science/anthropology undergraduate degree with honors from UC Santa Cruz. He serves on the Sustainability & Infrastructure Commission at the City of San Mateo and is a former member of the Sierra Club’s national Board of Directors.

Phillip Kobernick

Programs Manager

Phillip leads key transportation electrification initiatives including fleets and infrastructure innovation.

Prior to joining PCE, Phillip was the Logistics Services Manager for Alameda County, overseeing operational programs, including the municipal fleet of 1,200 vehicles. During his time at Alameda County, he developed the clean transportation program, including overseeing a joint procurement of electric vehicles and charging stations across 10 agencies, growing the County’s green fleet program to hundreds of hybrid and electric vehicles and nearly 200 EV charge ports, pilot testing advanced energy controls for EV fleets, and a comprehensive clean commute program to reduce drive-alone trips. He has a BA from UCLA.

Shraddha Mutyal

Programs Manager

Shraddha leads key building electrification initiatives including load shaping, analytics and innovation.

Shraddha comes to PCE with multiple years of experience in designing and implementing energy efficiency programs. Most recently, Shraddha managed the Single Family Program for BayREN, which administers energy efficiency programs within the 9 Bay Area counties. Under her guidance, the BayREN single family program was redesigned to better align with market needs and has been seeing an increased uptake. Prior to that, Shraddha worked as an Energy Engineer for 6 years analyzing, designing and implementing statewide energy efficiency programs in Illinois.

Shraddha grew up in India, and holds a dual Masters in Architecture and Civil Engineering (Construction Management) from the University of Illinois in Urbana Champaign. Prior to her move to the United States she was a practicing architect in Mumbai.

Peter Levitt

Associate Manager of Distributed Energy Resources (DER)

Peter leads PCE’s effort to increase the amount of local clean power within San Mateo County by developing a strategy to create and roll out new distributed energy programs.

Coming from a solar + storage background at SolarCity/Tesla, he brings four years of experience in C&I and small-utility project development, program development, and energy M&A.  He has dual degrees in Entrepreneurial Management and Spanish from Penn State, and is bilingual.

An avid believer in the power of sustainability, Peter is also the VP of Partnerships and Impact for seedSF Consulting Group, which provides pro bono consulting services to environmental non-profits in the Bay Area.

Peter Ambiel

Energy Programs Specialist

Peter manages PCE’s electric vehicle charging infrastructure programs and integration across energy programs.

Prior to PCE, Peter worked at Tesla for three and a half years across initially serving as a Transportation Project Manager, overseeing Tesla’s employee commute programs, shuttle programs, and commute-related logistics, and later transitioning to the Charging Infrastructure team (Supercharging) as a Project Manager overseeing Tesla’s Destination Charging program (L2 charging infrastructure) strategy and execution in Northeast while assisting market development in the Southeast and Midwest and constructing new business models for infrastructure deployment. While at Tesla, Peter deployed 2,000+ charging stations working with partners across industries – state agencies, multi-million dollar commercial real estate portfolios, regional utilities, and multi-national companies.

Peter graduated from Yale University in 2015, having played four years on Yale’s Division 1 Mens Soccer team, with a BA in Economics and concentration in Energy Studies focusing on the intersection of energy economics, markets, policies, and innovation.

Alejandra Posada

Energy Programs Specialist

Alejandra manages PCE’s electric vehicle incentive and awareness programs and assists in the development and execution of PCE’s local energy programs.

Alejandra oversees PCE’s EV incentive programs, the New EV Incentive Program and the DriveForward Electric (low-income used EV program). She also oversees PCE’s EV ride and drive campaign and some of PCE’s community pilot projects. Other responsibilities include research and analysis of program options, quantification of GHG and economic benefits, and outreach to partners and clients.

Prior to joining the Energy Programs team, Alejandra was a Communications and Outreach Fellow at PCE. Prior to joining PCE, Alejandra worked doing community outreach for a nonprofit-run group-purchasing solar program and as an environmental analyst doing CEQA work. Alejandra graduated from UC Santa Barbara with a double major in Environmental Studies and Global Studies. Her past academic research work including a detailed analysis of the distributed solar potential for the City of Santa Barbara.

Government Affairs

Marc Hershman

Director of Government Affairs

Marc brings to Peninsula Clean Energy over 30 years of government and legislative experience. Prior to Peninsula Clean Energy, he was the district director for California State Senator Jerry Hill. 

Previously he served as chief legislative aide for San Mateo County Supervisor Jerry Hill, legislative assistant to Rep. Robert T. Matsui on Capitol Hill, and community aide to Peninsula Rep. Tom Lantos. 

Marc was elected to the Millbrae City Council and re-elected twice. He served 3 terms as mayor and was a member of the boards of directors of the San Mateo County Transit District (SamTrans) and the San Mateo County Transportation Authority. He practiced law with a private law firm on the Peninsula for nearly 20 years.
Marc holds has a J.D. from the Santa Clara University School of Law and a B.A. in economics and political science from UC Santa Barbara.

Regulatory Policy

Jeremy Waen

Director of Regulatory Policy

Jeremy brings to Peninsula Clean Energy a decade of policy experience with Community Choice Aggregators (CCAs) during which he helped shape California energy policy to protect and foster the broader successes of CCAs.

Prior to Peninsula Clean Energy, he served as a Senior Associate for MRW & Associates. Prior to that, he served for five years as the Senior Regulatory Analyst at MCE, California’s first CCA. Prior to MCE, Jeremy gained policy advocacy experience through internships with the San Francisco Public Utilities Commission and the Clean Coalition.

Doug Karpa

Senior Regulatory Analyst

Doug comes to PCE as Senior Regulatory Analyst joins PCE from the Clean Coalition, where he worked as Policy Director promoting policies to support local energy and storage.

Prior to that he has worked in private practice as a regulatory attorney at Bingham McCutchen and Holland & Knight, as well as a non-profit environmental advocate. Ultimately, he developed his passion for clean energy having earned his Ph.D. at Harvard University in climate change biology, which led him to conclude that science wasn’t going to be enough. As a result, he earned his J.D. at U.C. Berkeley in order to advance the clean energy transition.

Matthew Rutherford

Regulatory Analyst

Matthew is a regulatory analyst with responsibility for a range of energy policy matters. Prior to Peninsula Clean Energy, Matthew served in regulatory affairs and compliance for a Vermont municipal electric department.

He represented the utility before the Vermont Public Utility Commission on a number of policy issues including net energy metering programs, development of plans to meet the State’s goals to reduce transportation emissions, and utility mandates to encourage electric customers to reduce fossil fuel use related to transportation and thermal applications. He also led the design, implementation, and administration of programs to encourage the adoption of building electrification (including air-source heat pumps and heat pump water heaters) and electric transportation (electric vehicles and electric vehicle charging equipment).


Matthew earned a BA in history from the University of Connecticut. He received a Masters of Environmental Law and Policy, and a Certificate in Energy Law from Vermont Law School.

Marketing Communications and Outreach

KJ Janowski

Director of Marketing and Community Relations

KJ heads the marketing and community relations team, providing strategic leadership and direction. Her prior experience of more than three decades includes 14 years as vice president of marketing for several software and hardware technology firms.

Her prior experience of more than three decades includes 14 years as vice president of marketing for several software and hardware technology firms, where she launched over 30 products that generated more than $500M in revenue. Following her work on the management teams of four technology startup companies, KJ provided strategic marketing consulting and interim executive services to a variety of large and small companies in the clean tech, software, services and computer technology sectors.

Most recently KJ was the VP of Startup Services and Strategic Programs for the non-profit cleantech innovation hub, Prospect Silicon Valley. A long-time environmental advocate, KJ served on the leadership team of environmental nonprofit GreenTown Los Altos, where she advocated for Community Choice Aggregation, led the Drive Less Challenge, worked on the 1000 Solar Rooftops initiative as well as community education efforts and other programs.

KJ has an MBA from Stanford University and a B.S. from UC Berkeley.

Kirsten Andrews-Schwind

Senior Manager of Community Relations

Kirsten Andrews-Schwind manages stakeholder relations, community outreach grants, low-income needs assessments, and resilience programs for medically vulnerable populations. She also staffs Peninsula Clean Energy’s Citizens Advisory Committee.

Before joining the staff of Peninsula Clean Energy as it launched in 2017, she served on its formation committee and Citizens’ Advisory Committee from 2015 to 2016. Previously Kirsten co-founded and directed a nonprofit think tank advocating for climate resilience and community choice energy. She authored The Community Resilience Toolkit used for planning by grassroots groups and policy makers in more than 30 countries, and launched a Bay Area coalition of grassroots organizations working for social equity in resilience policy. Kirsten holds a BA in Economics and an MS in Natural Resources Management, and speaks Spanish.

Gerald Gottheil

Senior Manager of Marketing Communications

Gerald’s team is responsible for managing the brand, the website, and communications including email — such as our monthly newsletter (subscribe here!), printed material, digital and traditional forms of advertising. The team also serves as marketing managers for Peninsula Clean Energy’s programs and projects.

Prior to Peninsula Clean Energy, Gerald led successful marketing programs for start-ups and Fortune 500 companies in multiple markets, including: telecommunications, office automation, graphic arts, computer and network technology, virtual reality, renewable and clean energy. His background in energy includes primary research into phase-change energy storage; marketing and program management for energy conservation, demand management, and time-of-use metering for utilities; and branding, public relations, and marketing communications for utility-scale solar energy systems.


Gerald serves on the Customer Advisory Commission for San Jose Clean Energy. He holds a bachelor’s in mechanical engineering from the University of Delaware, an MBA from San Diego State University, and is a licensed professional engineer in the state of California.

Carlos Moreno

Outreach Specialist

As a Community Outreach Specialist, Carlos represents Peninsula Clean Energy at community events and helps build strategic relationships.

Carlos strives to educate the public on Peninsula Clean Energy’s mission to reduce greenhouse gas emissions and offer customer choice at competitive rates. Carlos is also bilingual in English and Spanish.

Carlos worked at RethinkWaste in San Mateo prior to Peninsula Clean Energy. He gave tours of the recycling facility and transfer station at the Shoreway Environmental Center. He also fostered relationships with city staff in San Mateo County to help add recycling and compost bins in parks. Carlos holds a BA in Politics from St. Mary’s College of California.

Michael Arnaldo

Digital Marketing Specialist

Michael is responsible for the operations side of our digital marketing communications. He produces the website, newsletter, emails, social media, and is responsible for marketing database operations.

Michael has over 10 years of digital marketing experience. Prior to Peninsula Clean Energy, he was a Digital Consultant for iHeartRadio & Entercom Communications supporting 6 radio stations in the Bay Area.

Jennika Uribe

Los Banos Community Outreach Specialist

Jennika joined Peninsula Clean Energy due to the addition of a new service territory –  the City of Los Banos. She will engage with the Los Banos community as new customers are enrolled and begin service.

Jennika is deeply rooted in the Los Banos community and is passionate about pairing individuals to appropriate resources. She has many years of experience in community projects and outreach efforts within Merced County. Jennika holds an AA from Merced College in General Business, and a BS from San Jose State University in Business Administration.

Power Resources

Siobhan Doherty

Director of Power Resources

Siobhan directs PCE’s energy portfolio procurement and management, resource planning and analysis, and compliance reporting.

Prior to SunEdison, she worked at the non-profit Center for Resource Solutions best known for its Green-e Certification program and at consulting firm Sentech to help expand companies’ use of renewable energy and energy efficiency technologies.

Siobhan holds an MBA from the Ross School of Business as well as an MS in Environmental Policy with a focus on energy markets, both from University of Michigan, and a BA from Smith College where she majored in Government with a minor in Environmental Science and Policy.

Previously, she was Project Finance Director at SunEdison where she structured and negotiated $350 MM in complex financial transactions and led or supported origination efforts resulting in the execution of over 250 MW in power purchase agreements.

Siobhan competes with a local rowing team in her spare time.

Chelsea Keys

Power Resources Manager

As PCE’s Power Resources Manager, Chelsea is a key member of the Power Resources team and has a wide range of responsibilities for advancing PCE’s power procurement, resource planning, contract management and compliance programs, and strategic studies.

Chelsea is a passionate green energy advocate who spent six years with The Energy Authority, supplying renewable power across multiple counties in Washington state. As a Senior Energy Trader, she helped manage roughly 2,000 MWh of generation in the MID-C and CAISO hourly markets. She has experience scheduling diverse energy portfolios. She is currently finishing her MS in Energy Management from Oklahoma City University. Securing renewable energy for the community is of high value to her and she’s happy to have moved to the center of all that is green, sustainable, and clean!

Sara Maatta

Renewable Energy and Compliance Analyst

Sara works on power supply planning, load forecasting, energy procurement, risk management, market monitoring, regulatory compliance, and settlements.

Prior to Peninsula Clean Energy, Sara was with the Alameda County Water District. As an Analyst/Engineer, she helped forecast demand, evaluate new water supplies and water storage projects, manage water supply purchases, optimize water production operations, and implement programs to help restore the California Central Coast Steelhead fishery in Alameda Creek.

Sara received a BS and an MS in Civil Engineering from Stanford University, and is a licensed Civil Engineer in California.

Mehdi Shahriari

Senior Renewable Energy Analyst

Mehdi performs quantitative analysis to support critical decisions for resource planning and portfolio management.

He devises new approaches to represent results to better support decision analysis and assimilate complex information into readily understood reports and presentations. He performs in-depth analysis of power market operations and support PCE in the areas of analytic modeling for portfolio optimization, risk management, and maintaining data systems


Prior to joining PCE, Mehdi worked as a Senior Energy Analyst at Ascend Analytics in Boulder, CO. His portfolio of projects includes Cost/Benefit Analysis of joining CAISO’s Energy Imbalance Market (EIM) for Turlock Irrigation District, Value of Solar Analysis for Duke Energy, and resource planning projects for Burbank Water and Power and Public Service Company of New Mexico. Mehdi received his PhD in Energy and Mineral Engineering program with a focus on Energy Management and Policy from Pennsylvania State University. In addition, he holds master’s degrees in Geographic Information Systems from the Pennsylvania State University and Systems Engineering from University of Tehran.


David A. Silberman

General Counsel

Along with his service as a Chief Deputy County Counsel for County of San Mateo, David serves as the General Counsel to Peninsula Clean Energy. He has represented and advised public agencies since 2004.

Prior to joining the public sector, he worked as a litigator with the firm of Howard Rice Nemerovski Canady Falk & Rabkin, focusing on commercial and intellectual property law, and clerked for Fortunato Benavides of the U.S. Court of Appeals for the Fifth Circuit and Robert Timlin of the Central District of California. David obtained his law degree from U.C.L.A. School of Law with highest honors in 2000.

Jennifer Stalzer Kraske

Deputy County Counsel

Jennifer joined the County Counsel’s Office in 2012. She is currently assigned to: HIPAA/Compliance, Health System Information Technology, the Information Services Department, and the San Mateo Medical Center. She also serves on the Litigation and Child Protective Services teams.

Upon graduation from law school in 2009, Jennifer clerked for the Honorable Chief Judge Emily C. Hewitt at the United States Court of Federal Claims in Washington, D.C. Following her clerkship, Jennifer served the United States Department of Justice, Commercial Litigation Branch’s Fraud Section through the Honors Program. There, she was responsible for representing the United States government in fraud litigation cases filed under the False Claims Act. Jennifer planned litigation strategy in healthcare and education fraud cases as well as successfully executed investigations which regularly included the coordination of multiple federal agencies. Jennifer assisted in the negotiation of high value settlements in fraud cases against corporate and other private defendants.