The Israeli government is planning to sponsor a program to replace 14,500 electrical water heating units with solar powered ones, at a highly subsidized price.
The new units will come with an 8-yr warranty, and will be reduced in price, but restrictions will apply.
They estimate that for families who currently only use electrical water heaters, savings will average 1000 shekels per year after the upgrade. That means the new water heater will quickly "pay for itself"/
As soon as I hear that the program is accepting registrations, I will let you know!!