PannErgy Plc. announced that its subsidiary PannErgy Geothermal Power Plants Ltd. (PEGE Ltd.) is selling its 100 percent stake in CSRG Energy Ltd to a strategic investor. The price of the stake is HUF 250m. The sale is part of a portfolio clean-up of the company’s non-core activities which is expected to improve PannErgy Group’s operational efficiency and improve the maintenance of its geothermal projects. Company officials say that constant reevaluations of its portfolio have to be carried out on a permanent basis.