CalWave is developing a wave energy converter (WEC) called xWave, which operates fully submerged and is classified as a submerged pressure differential type. As ocean waves pass over the submerged wave buoy, a pressure differential is created, exciting the absorber in multiple degrees of freedom to oscillate in resonance with the ocean waves. Energy is efficiently extracted using multiple independently controllable power take-off (PTO) units. Based on CalWave's 2 body WEC technology, multiple improvements on absorber geometry and PTO controls have been achieved. This submission includes a final report including results and conclusions of the New Technology Qualification (NTQ) review of CalWave Power Technologies Inc's xWave technology, performed by American Bureau of Shipping. Project is part of the TEAMER RFTS 3 (request for technical support) program.

CalWave has developed a submerged pressure differential type Wave Energy Converter (WEC) architecture called xWave. The single body device oscillates submerged, is positively buoyant, and taut moored to the sea floor and integrates novel features such as absorber submergence depth control. Since participation in the US Wave Energy Prize, CalWave has evolved the design and successfully concluded a scaled 10-month open ocean pilot. CalWave recently concluded the final design phase of a scaled up WEC version for PacWave and started component order/build of the WEC towards the grid-connected demonstration at PacWave. Documentation here includes a Non-Commercially Sensitive Project Report for BP1 of CalWave's xWave Demonstration Project.

The objective of this project is to advance the Technology Readiness Level of the x1 Wave Energy Converter (WEC) developed by CalWave Power Technologies Inc. through advanced numerical simulations, dynamic hardware tests, and ultimately a scaled open water demonstration deployment. Key outcomes include deployment and operation of the demonstration unit at an open water site which replicates full scale ocean conditions, and performance and load measurements which are used to validate the high techno-economic performance of the full-scale device. This report briefly describes the x1's final system design but, as a final test report, mainly focuses on the open water testing. For further description of the WEC system the reader is referred to CalWave's system content models, which will become publicly available at the end of 2027. The full version of this Final Test Report will become available on 8/10/2028. This WEC pilot project was done at Scripps in San Diego, California, USA.

The objective of this project is to advance the Technology Readiness Level of the x1 Wave Energy Converter (WEC) developed by CalWave Power Technologies Inc. through advanced numerical simulations, dynamic hardware tests, and ultimately a scaled open water demonstration deployment. Key outcomes include deployment and operation of the demonstration unit at an open water site which replicates full scale ocean conditions, and performance and load measurements which are used to validate the high techno-economic performance of the full-scale device. This report briefly describes the x1's final system design but, as a final test report, mainly focuses on the open water testing. For further description of the WEC system the reader is referred to CalWave's system content models, which will become publicly available at the end of 2027. The full version of this Final Test Report will become available on 8/10/2028. This WEC pilot project was done at Scripps in San Diego, California, USA.

This dataset supports the concept verification of the Dual Inclined Paddles Wave Energy Converter (WEC), a small-scale marine hydrokinetic device developed by E-Wave Technologies LLC for offshore aquaculture applications. The review was conducted by the American Bureau of Shipping (ABS). The system consists of dual inclined paddles retrofitted to a buoy, connected to a tether-based power take-off (PTO) system. Verification was based on engineering analysis and 1:8 scale model testing at Stevens Institute of Technology. Included documents comprise a System Requirements and Description Document (SRDD), a risk assessment, and ABS review comments with responses. The documents define system architecture, performance criteria, environmental conditions, and applicable standards. The review is limited to concept verification and does not cover full-scale performance.

This submission contains a summary of tank test derived WEC device behavior in different irregular sea states. CalWave sought to conduct experimental tank testing of scaled prototype units early on in the design process to obtain a first estimation of device performance for sea states of importance and to perform system identification/PTO tests. These experimental tests primarily aim to assess the wave to structure conversion efficiency and device behavior. Moreover, distinct model parameters of high interest were experimentally tested to validate numerical device modeling and optimization. These tests focused on system identification rather than performance maximization.

This submission contains a summary of tank test derived WEC device behavior in different irregular sea states. CalWave sought to conduct experimental tank testing of scaled prototype units early on in the design process to obtain a first estimation of device performance for sea states of importance and to perform system identification/PTO tests. These experimental tests primarily aim to assess the wave to structure conversion efficiency and device behavior. Moreover, distinct model parameters of high interest were experimentally tested to validate numerical device modeling and optimization. These tests focused on system identification rather than performance maximization.

Data from the 1/20th scale testing data completed on the Wave Energy Prize for the CalWave Power Technologies team, including the 1/20th scale test plan, raw test data, video, photos, and data analysis results. The top level objective of the 1/20th scale device testing is to obtain the necessary measurements required for determining Average Climate Capture Width per Characteristic Capital Expenditure (ACE) and the Hydrodynamic Performance Quality (HPQ), key metrics for determining the Wave Energy Prize (WEP) winners.

This data is a result of an experimental campaign to characterize the hydrodynamics and performance of a laboratory-scale oscillating surge wave energy converter (OSWEC). The device was 85 cm wide, 1.4 meters tall, and 14 cm thick and was tested in the Sea Wave Environmental Lab (SWEL) wave tank at the National Renewable Energy Laboratory which is 2.5 meters wide with a water depth of 1.3 meters. The device included fifteen pressure sensors on the flap face, two 6-axis load cells at the hinge, an encoder to measure flap position, and a motor to emulate a PTO and absorb power. We provide a full summary of the device and experiments in the TEAMER Post-Access Report titled "Optimal control of an oscillating surge wave energy converter". This DropBox directory contains data from four types of experiments: 1. Buoyancy Tests - We measure the torque required to hold the flap at different angles to characterize buoyancy torque as a function of position. 2. Locked Flap (Excitation) Tests - We measure the torque on a locked flap subject to different wave parameters to extract the excitation torque coefficient. 3. Forced Oscillation (Radiation) Tests - We force the flap to oscillate at different periods and amplitudes to extract added inertia and radiation damping coefficients. 4. Control Tests - We subject the flap to different waves and use a linear damping controller to emulate a PTO and extract absorbed power and capture width ratio (CWR) as a function of wave and control parameters. This data set includes raw and processed time series data from the encoder and load cells, as well as calculated hydrodynamic and performance parameters from the tests. We include a README document as well as a spreadsheet with individual test details as a reference. Funding for this experimental campaign was provided by the TEAMER Program under RFTS 10 and was a collaboration between the University of Washington and the National Renewable Energy Laboratory.

These files collectively provide a comprehensive overview of the testing process, data analysis, and validation for the Twin Ocean Power device tested at the O.H. Hinsdale Wave Research Laboratory, supported by TEAMER funding. This resource includes an overview of power results for a series of 7 trials. The files included in this comprehensive overview include a comprehensive log sheet for each trial, a summary of all trials, and processing scripts for the raw data. It includes all raw data in .tsv and MATLAB compatible formats, an average power chart, angular velocity charts for each trial, trial metrics, and power output files. This resource includes images of the Twin Ocean Power Wave Energy Converter device components and movement during testing and video recordings of each trial.