Bloomberg: Scottish Power Ltd., Iberdrola SA’s U.K. unit, plans to invest more than 100 million pounds ($184 million) on tidal-power developments as the utility develops energy-production that doesn’t add to carbon-dioxide emissions. Scottish Power is studying two sites in Scotland and another in Northern Ireland for deploying underwater turbines capable of generating a combined 60 megawatts of electricity, enough for more than 40,000 homes, the Glasgow-based company said today in a statement. …