In South Africa, the Department of Energy (DoE) has issued a notice for request for bids (RFB) under the Cogeneration Independent Power Procurement Programme.
Energy minister Tina Joemat-Pettersson said in the 2015/16 budget speech that the department has already submitted new determinants to the National Energy Regulatory of South Africa (NERSA) for 1,800MW of cogeneration.
The RFB documentation will be available from 17:00 on 4 June where bidders are expected to pay a non-refundable fee of ZAR14,500 ($1,000) for each project, Engineering News reported.
Types of technology
The cogeneration IPP programme will procure energy from Waste to Energy, Combined Heat and Power (CHP), and Industrial Biomass.
Although three different technologies will be used, the basis of the cogeneration process will always include a fuel and/or energy source that originates from an underlying industrial process and the cogeneration facility is coupled to the industrial process of a host plant.
Combined Heat Power
CHP projects use traditional base-load fuel resources including coal, waste or discard coal, natural gas and primary liquid fuels. The CHP projects according to the DoE must co-produce useful thermal energy in addition to energy output.
According to the DoE waste-to-energy projects use process furnace off-gas, waste heat and any other non-renewable energetic waste emitted from an industrial process. These projects may or may not co-produce useful thermal energy in addition to energy output.
These projects use by-products such as sugar bagasse, mill waste (chips, saw dust, shavings, soaps, methanol, sludge, bark and black liquor), agricultural or forestry residue (alien vegetation clearing). These projects may or may not co-produce useful thermal energy in addition to energy output.
Release to market
Joemat-Pettersson added in her budget speech that: “Cogeneration supply of about 720MW has been secured through Eskom. In addition, we [the DoE] have revised the approach in relation to the procurement of cogeneration in line with the IRP [Integrated Resource Plan] to assist with the current electricity challenges.”
She added: “The RFP [Request For Proposals] for the revised cogeneration approach, totalling 1,800MWs is on track for release to the market”.