TWEFDA is developing probably the most flexible solution for producing, storing and managing energy offshore. It can be considered the Swiss Army Energy Tool of Marine Power. The collaborative approach used, starts with 6 ES-Wave devices, surrounding a TWEFDA Hub. This configuration is called the TWEFDA Association. The ES-Wave is a hybrid energy converter with storage capabilities. The TWEFDA Hub assists the ES-Waves managing their weight and more widely, the production of all the components associated to such TWEFDA Hub. This includes other offshore generators such as wind or floating solar farms. With an outstanding performance both, in generation and storage, the solution can benefit from several business streams, can work on a 24/7 basis and, thanks to the use of buoys and satellites, without discontinuity. In generation, the tool uses a patent-pending Weight Changing Mechanism that allows the device to change its weight from the way up (light) to the way down (heavy). A preliminary hydrodynamic analysis has revealed that this has a profound effect in the harvesting process. In storage, the tool uses another patent-pending Weight Changing Mechanism that allows the device to change its working mode, increasing its mass. All this is achieved with high efficiency thanks to the use of the tidal range. Practically, the tool behaves as a pumped-hydro application in the middle of the ocean, with no environmental constraints. The solution comes with a complete integration for offshore services including but not limited to generating unprecedented levels of wave energy, storing unprecedented level of energy offshore and others such as CCS or Hydrogen. Finally, the tool, when applied to O&G decommissionable assets, can potentially repurpose the jacket, the platform, the pipeline and/or the well. The plurality of business streams suggests that the TWEFDA Association could be really profitable.