Diane has over 30 years of expertise across natural gas, electricity, and renewable energy markets. She has led direct sales of natural gas and power to end-use customers throughout California and national markets, consistently delivering strategic, growth -focused solutions.

During her decade at BP, Diane achieved tenfold growth in the natural gas origination book and pioneered BP's first biogas/renewable natural gas (RNG) deal with a major California transportation operator, an early demonstration of her ability to innovate in emerging energy sectors.

She strengthened national account performance at Direct Energy (now NRG) through seven years of natural gas and electric electricity sales, cultivating long-term client partnerships and expanding market reach.

At Pilot Energy, Diane built the natural gas portfolio over 4 years while driving cross-selling initiatives in electricity and utility services highlighting her versatility in addressing complex customer and market needs.

In August of 2025, Diane Holman and Rand Havens established H&H Energy to assist clients in all aspects of the energy space.  While supplying energy commodity to their C&I clients, Diane and Rand also focus on utility-scale power development for data centers collaborating with developers and clients on land strategy, gas procurement for behind-the-meter solutions, turbine/transformer/critical power sourcing, pipeline evaluations, natural gas supply structuring, power purchase agreements (PPA’s), and a renewable integration.

Renowned for her client relationships and forward-thinking approach, Diane consistently delivers tailored solutions to meet the client demand in today’s energy environment.