D1's co-founder and CEO, Bob Hallam, said, "D1's green initiatives began in 1999 when we built our 135,000 square foot facility in Vista, California. We worked closely with the electric company to design our building to be extremely energy efficient., In addition, our employees bring new eco-friendly ideas to the table on an ongoing basis. Being green is an attitude here, and we'll never stop reaching for it."
It should be noted that California has the most stringent environmental regulations in North America, and D1 has been manufacturing in the state for more than 30 years. To remain in California, the Californian Energy Commission (CEC) challenged every manufacturer to meet stringent energy-efficiency goals. While some companies chose to leave the state, D1 not only met the CEC challenge but was asked to help write statewide energy regulation policy for the hot tub industry.