This whitepaper shows a way to implement time series prediction with KNIME nodes. As an example, an auto-regression model is built, but the frame can be easily change to host a neural network based prediction model or any other numerical model.
As usual, workflows and data is available for download together with the pdf file.
Just a note. The original data could not be distributed fully (only a subset is available for download), but it can be requested directly from the Irish Social Science Data Archive http://www.ucd.ie/t4cms/CER_energy_electric_issda-data-request-form.docx