PACE Total Energy Solutions Team

Tim Crockett


Tim leads the PACE Houston team with over 30 years of experience in Houston's commercial real estate and energy industry.  He has developed, renovated, managed, leased, and financed commercial real estate properties. His track record of innovation and leadership were demonstrated in 1994 when selected as a Test Driver for GM's Impact (prEView for the EV1) the first mass produced Electric Vehicle and when he helped create the first known wireless hotspot in Houston in 2000He understands property owner’s goals of attracting and retaining tenants, maximizing NOI and asset value. In addition to helping property owners lower their energy usage, Tim provides strategic advice in procurement, demand response and monthly bill audits.

His LinkedIn address is

Paul Knudson

For both portfolio and individual properties, Paul brings together the client needs, the energy efficiency measures and the financing applications.

Paul has worked in banking, treasury, finance, trade finance, risk management and technology in a 32 year banking career. His consulting company, TriCloud Solutions, LLC, advises the PACE Houston team in optimizing client solutions and advises clients in optimizing their assets while minimizing their risks. Skilled in visioning, strategic planning, and turning complex financial concepts into solutions that deliver results,  he functions as our strategy, finance and technology business consultant. His LinkedIn address is

Eddie Andrich
Information Technology Consultant

Eddie addresses client software, network, hosting and IT risk mitigation needs.

Eddie is PMP certified with over 30 of years proven success in Information Technology - with a focus on the deployment of complex IT infrastructure projects, software deployment, network infrastructure transformations, enterprise application rollouts, remote hosting, storage of critical services, and risk mitigation. Eddie has been engaged by numerous global energy, technology, medical and governmental clients including NASA's Mission Control Center, the world's largest medical institution, one of the world's largest airlines and numerous energy companies. He leverages this experience to deliver a high level of results to his clients. His LinkedIn address is EDDIEANDRICH

Keith Reihl
Professional Engineer

 Keith provides professional engineering services for operational and capital improvement recommendations to our clients. With over 30 years experience, he performs initial MEP (Mechanical Electrical and Plumbing) evaluations, ASHRAE Energy Audits, ITPR (Independent Third Party Review) services as required for PACE projects, and Commissioning.

Keith has led MEP teams, and personally worked with single property and portfolio clients to design, evaluate and retrofit MEP systems for commercial, office, higher education, K-12, residential, data center, retail, restaurant, high-tech and airport properties.  He has experience in Variable Refrigerant Flow, in LEED Consulting and Commissioning for existing buildings, on both new and renovation projects. Keith has held many leadership positions in USGBC, SPEER and ASHRAE. He Chairs the Energy Code Committee for the City of Houston. Keith holds the following accreditations: PE, MBA, CEM, AVS, LEED AP, LEED AP O+M, GBE, CSDP, CBCP, HBDP, CEA, EBCP, GPRO FUND + CM.

  • CEM Certified Energy Manager through the Association of Energy Engineers
  • LEED Accredited Professional 2004
  • GBE Green Building Engineer through the Association of Energy Engineers
  • AVS Associated Value Specialist through the Society of American Value Engineers
  • CSDP Certified Sustainable Development Professional through the Association of Energy Engineers
  • CBCP Certified Building Commissioning Professional through the Association of Energy Engineers
  • HBDP High Performance Building Design Professional through the American Society of Heating, Refrigerating and Air Conditioning Engineers
  • CEA Certified Energy Auditor through the Association of Energy Engineers
  • EBCP Existing Building Commissioning Professional through the Association of Energy Engineers
  • LEED Accredited Professional Operations + Maintenance Specialty

John D. Cook, PhD

John uses advanced mathematics to create simple solutions for complex data problems. 

John taught Statistics at Vanderbilt and University of Texas and currently is an adjunct professor at the University of Houston.  He built and provided leadership to the 20 person statistical research team at MD Anderson for over 12 years before leaving to build his own consulting business.  John mines data for opportunities for his clients and provides analytical strategic consulting utilizing applied math, statistics, and computation. John serves as a principal with Singular Value Consulting.

His LinkedIn address is

His website is

Don Grieb

Project Management Executive

For over 30 years, Donald L. Grieb, Jr. has been representing landlords and individual corporate clients.  His responsibilities included directing construction and leasing in properties totaling more than ten million square feet of office, retail and industrial space.  For nine years he represented Gerald D. Hines Interests as a project and construction manager.  For four years, as an asset manager, he represented the real estate interests of major corporations such as Bell Atlantic, General Motors, J. P. Morgan Investments, Maxxam, Inc., and Camden Property Trust.  For the last twenty-six years, he has been representing the interests of individual corporate clients.  He has a Masters Degree in Business Administration, is a registered Texas and Georgia Architect, and has been active in the Houston market since 1979.

Don Grieb, PACE Houston Energy Solutions

Don Grieb, PACE Houston Energy Solutions



Herb Yuan, PhD

Herb Yuan is CTO for ErascoGroup. Herb retired from Shell with over 30 years in a variety of technology and upstream management positions. His last assignment was CIO for the upstream head office, which included technology and exploration organizations with priorities on high performance computing, information management and software engineering. Herb also served on leadership teams associated with technology organizations as well as initiating the Shell Gamechanger enterprise innovation process. In the last few years, Herb has worked in the area of cyber security management for large multi-national organizations especially in the area of governance, compliance and strategy and supported clients with the organizational changes required to achieve better security and increased resilience. He has served on a variety of boards. Previously, Herb was Chairman of the board of POSC (later renamed Energistics), on the board of the OpenSpirit Corporation, the advisory board of the Rice Alliance as well as on the board of the Hermann Park Conservancy. Herb enjoys cycling, golf and reading. Herb received his PhD in Chemical Physics from the Massachusetts Institute of Technology and his undergraduate degree in Chemistry and Math from the Australian National University.