Riaz Akbar in his above letter has suggested that all available renewable means such as solar, wind, biogas and bio-fuel must be tapped on a war-footing. Provision of energy-saver bulbs at cheap rates must also be ensured. These are all necessary short term measures but they cannot keep pace with the demand which is increasing at 7pc per annum. In the long run, a large scale injection of cheap hydropower through multi-purpose storages is the only answer if cost of electricity is to be kept affordable and in ample quantities.

ENGR KHURSHID ANWER,

Lahore, August 20.