ISLAMABAD - Around 22 solar power projects having a cumulative capacity of 772.99 MW are under different stages of development and can achieve commercial operation by 2015-16. These projects will achieve commercial operation by stipulated period subject to availability of Grid by NTDC Limited and announcement of tariff by NEPRA. Sources said the department is pursuing and facilitating the development of Alternative and Renewable Energy (ARE) based power projects through private sector. The Renewable Energy (RE) power projects based on wind and solar energy are being developed by private sector on IPP mode. Moreover, the sources said two wind power projects of 49.5 MW and 56.4 MW capacities respectively are operational while three wind power projects of 150 MW capacities in total are under construction and expected to be completed this year.