(1) Were any tenders invited for the installation of low-pressure solar water heaters in 2013; if not, why not; if so, was the tender awarded; (2) how many low-pressure solar water heaters were installed in 2013; (3) (a) what are the targets for the roll-out of low-pressure solar water heaters and (b) what is his department doing to ensure that it reaches its targets in this regard; (4) what is his department doing to ensure that the local manufacturers of low-pressure solar water heaters have sufficient national demand to support their operations?