Our 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.


  • Alejandra Posada

    Communications and Outreach Fellow

    As a Communications and Outreach Fellow, Alejandra assists in outreach and attends community events to educate residents and businesses of their energy choices and all things PCE.

    Prior to joining PCE, Alejandra worked as an Outreach Coordinator for an environmental grant-giving student organization and as an Energy Programs Intern for a Santa Barbara-based nonprofit. Alejandra is passionate about renewable energy and is excited to be working for a public agency that brings positive environmental change to the local community. 

    Alejandra graduated from UC Santa Barbara with a double major in Environmental Studies and Global Studies.


  • Anne Bartoletti Anne Bartoletti

    Board Clerk & Executive Assistant to the CEO

    Anne joined Peninsula Clean Energy in September 2016, providing administrative support to the PCE Board of Directors, and executive support to the CEO.

    Anne’s background is in customer service and consumer protection, having worked in telecommunications and information technology industries managing call centers and executive escalations, and then moving into leadership roles within grassroots organizations, tech start-ups, and providing legislative support to a state legislator. She has a Telecommunications Technologies certification and a Master of Fine Arts degree from DePaul University, and a Bachelor’s degree from Blackburn College.


  • Charlsie Chang

    Communications and Outreach Fellow

    As an Outreach Fellow, Charlsie attends community events, works with local organizations, and coordinates outreach to ensure San Mateo County residents and businesses are informed about PCE.

    Charlsie majored in Political Science at UC Santa Cruz and received her MPA from Tsinghua University in Beijing. Prior to joining PCE, Charlsie worked at Lenovo, Edelman, and the German International Cooperation (GIZ) in Sustainable Finance and Infrastructure.


  • 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!

  • David Silberman 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.


  • Eric Weiner photo Eric Weiner

    Renewable Energy Analyst

    Eric assists in power procurement by analyzing costs of transmitting power. With the power resources team, he helps grow our portfolio and account for risk, returns, and resource/location diversification.

    Previously, he was a post-graduate fellow at the NRDC where he worked for both Building Decarbonization Group and the India Program where he analyzed different solutions for building electrification in California and how to accelerate the growth of green energy markets in India. Eric received his Master’s from Stanford in Civil and Environmental Engineering where he focused on Atmosphere and Energy. He also holds a BS in Physics from Indiana University.


  • Jay Modi

    Director of Finance and Administration

    Jay oversees accounting, financial, HR, and IT functions. He is also responsible for source financing, internal controls, and supporting the Audit Committee and Board of Directors in oversight of PCE’s finances.

    Jay has 10+ years of experience across various roles in Finance and IT including FP&A, Finance Operations, Fund Accounting, Asset Management, setting-up Internal Controls, Merger & Acquisitions, and managing IT tools. Previously, Jay lead FP&A and Finance Systems at SunEdison’s North America division and played a key role in the division’s spin-off to ForeFront Power. Prior to that Jay was a part of TerraForm Power’s IPO team where he managed the cash flows of 1.9 GW of operational assets across USA, Canada, UK and Chile.

    Jay earned an MBA from Missouri University of Science & Technology with a major in ERP and a Bachelor’s degree in Business Management with a major in Accounting from Bangalore University.


  • Jeremy Waen

    Senior Regulatory Analyst

    Jeremy serves as PCE’s technical expert on policy matters before the California legislature and state regulatory agencies.

    Prior to PCE, Jeremy served as a Senior Associate for MRW & Associates. He also served for five years as Senior Regulatory Analyst at MCE Clean Energy. His work at MCE ranged from ratemaking, to competitive market design, to advancement of Distributed Energy Resources.

  • Joe W staff photo Joseph Wiedman

    Director of Legislative and Regulatory Affairs

    Joe oversees PCE’s regulatory and legislative efforts before state and federal agencies and the state legislature. Prior to joining PCE, Joe was a partner with the law firm Keyes, Fox & Wiedman LLP.

    Joe was also a founding principal of EQ Research LLC, a renewable energy consulting firm. While in private practice, Joe’s work focused on reforming state and federal regulations to support the deployment of renewable energy resources. Joe also brings PCE deep experience in developing programs and policies that facilitate consumer access to renewable energy. In addition to his work in private practice, Joe’s career spans academia and public service.

    Joe holds a JD from the University of California – Berkeley, an MS from Illinois State, and dual BAs from the University of Illinois – Urbana.


  • Kirsten A-S Kirsten Andrews-Schwind

    Communications and Outreach Manager

    Kirsten Andrews-Schwind is Communications and Outreach Manager at Peninsula Clean Energy, and has been advocating professionally for community choice energy for the past eight years.

    Kirsten previously co-founded and served as Director of Rooted in Resilience (formerly known as Bay Localize), where she focused on Bay Area climate mitigation and adaptation policy. She authored the Community Resilience Toolkit, which is used by grassroots groups and policy makers in more than 46 states and 30 countries. Kirsten holds a BA in Economics and an MS in Natural Resources Management, and speaks Spanish.


  • staff photo Leslie Brown

    Manager 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

    Key Accounts Executive

    Michael manages relationships with PCE’s largest commercial and industrial customers, acting as an advocate and energy advisor.

    Michael previously worked as Energy Analyst at CleanPowerSF helping to launch and roll out the program through account management and electric rate analyses. He grew up in San Mateo County and is excited to give back to his community.

    Michael received a BS from Purdue University in Natural Resources and Environmental Science.

  • Nirit E Nirit Eriksson

    Associate General Counsel

    Concurrent with her service as Deputy County Counsel for the County of San Mateo, Nirit also serves as legal counsel to Peninsula Clean Energy.

    Nirit has represented and advised public agencies since 2013. Prior to joining the public sector, she worked as a litigator for five years with the firm of Latham & Watkins LLP, focusing on antitrust and securities law, and clerked for Chief Judge Diane Wood of the U.S. Court of Appeals for the Seventh Circuit. Nirit obtained her law degree from U.C. Berkeley in 2007 and her Ph.D. in mathematics from U.C. Berkeley in 2004.


  • Rafael Reyes

    Director of Energy Programs

    Rafael’s career includes 15 years in high-tech project management, system architecture and business consulting.

    He was former VP of Community Initiatives for Prospect Silicon Valley where he provided strategic direction on clean energy community initiatives including an advanced solar-storage pilot, EV infrastructure and fleet deployments, and vehicle-grid integration pilots. He was the founding Executive Director of the Bay Area Climate Collaborative (BACC) launched in 2009 and merged with ProspectSV in 2015.

    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.

  • 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 lives in San Francisco and competes with a local rowing team in her spare time.


  • Tj Carter

    Marketing Associate

    As Peninsula Clean Energy’s Marketing Associate, Tj assists with the development, implementation, and communication of PCE’s marketing campaigns.

    Prior to joining PCE, Tj worked as a Sustainability Fellow for the County of San Mateo’s Office of Sustainability supporting the Sea Change SMC and Home for All SMC initiatives.

    Tj received a BS in Public Affairs with a major in Environmental Management from Indiana University’s School of Public and Environmental Affairs (SPEA).