Micro-grids are independent controllable and defined systems including electric generating and consuming assets that can be connected to or disconnected from the larger power grid, and they are becoming more popular.
Wind turbines get bigger and more efficient, with 3-4 MW turbines becoming commonplace, offshore turbines as large as 7 MWs in trials, andlarger machines being considered (this is largely being driven by companies such as Vestas, GE and Siemens).
With new cruise ships becoming much larger, the potential to tap that continued growth will require bigger berthing facilities and a better range of tours and attractions once passengers disembark.