Instrumented vans monitored meteorological elements related to solar energy on the island of Hawaii between 1 June and 7 July 1978. The measurement program consisted of four phases. The first two concentrated on insolation and its attenuation by orographic and sea breeze cloud. The others considered wind power potential. In addition to mobile platform measurements, supporting data were collected including satellite imagery, ground-based photography, radiometric data, and rawinsonde data. A number of significant deviations from anticipated normal conditions occurred. These included a series of unusually clear days on windward Mauna Loa, anomalous convective precipitation over a leeward desert, and the passage of the remnants of a tropical storm. Plans for detailed analysis are briefly outlined. It is apparent that mesoscale interactions between island features and the trade winds must be documented before solar energy resources can be properly assessed.