Subsidy:
Eskom have introduced a subsidy program with the benefits being passed on to the purchaser. The subsidy can be in the region of 20% but is directly related to the quality and efficiency of the individual system with a corresponding sustainable reduction in energy use.
More information can be found here : http://www.eskomdsm.co.za/?q=Industry_Supplier_Information
Solsquare has 6 systems registered on the ESKOM Rebate Scheme