Address 73-4485 Kahilihili St, Kailua-Kona, HI




If a particular date does not open for booking, it is because it is unavailable at this time. For further questions call 808-329-8073 or email

Come see, experience and learn about the Hawaii Ocean Science and Technology (HOST) Park administered by the Natural Energy Laboratory of Hawaii Authority (NELHA), up-close. Tour begins at the iconic Gateway Visitor Center, one of the first platinum LEED certified green buildings built in the United States, with an engaging presentation and tour of the building. Presentation includes the history, purpose, current operations at HOST Park as well as information on advances in science, technology and engineering and innovative uses of sunlight and seawater combined with the research support provided by NELHA at the HOST Park campus. Learn about Hawaii’s Clean Energy Goals and how innovation at HOST Park is working toward meeting those goals on the Island of Hawaii, and Hawaii Tourism Authority’s Malama Hawaii program. Post presentation, you will follow the host in your vehicle to beautiful Keahole Point, where you will get up-close and learn more about NELHA operations, the HATCH aquaculture program and Hawaii Natural Energy Institute’s (HNEI) hydrogen fuel production station. The tour ends with a visit to Makai Ocean Engineering’s Ocean Thermal Energy Conversion (OTEC) facility.

Keahole Center for Sustainability is a nonprofit that focuses particularly on technology showcased on the Big Island and here at NELHA. If you have even just a smidgen of curiosity about the Big Island’s role in cutting edge green energy, sustainable aquaculture, desalination, and research efforts, or if you have a passion for the environment and inspiring the next generation, this tour is for you!

Bring a face covering, hat, water and wear sunscreen!

NELHA/HOST Park Tour Presentation Schedule
Mondays. Tuesday, Wednesdays and Fridays (excluding holidays)
Duration of entire tour: 10 am – 12:00 noon
10-10:45 am        Gateway Presentation at the Visitor Center (& on-site projects)
10:45 am – Noon  Keahole Point tour and visit to Keahole Point, HATCH Accelerator, HNEI Hydrogen Fuel Station,  OTEC demonstration facility & Hale Iaco business incubator

Prices are $53 for Adult and $49 for Kama‘aina, Seniors, Students and Military. Children under 8 are free.