Now in its fourth year, the Pensioners Parliament, organised by charity Age Sector Platform, is making the appeal ahead of its annual assembly on Friday.Chair of the parliament Michael Monaghan said: "Since the parliament began in 2011, the top concern of pensioners here has been keeping warm in winter."Above any other issue, older people are worried about the price of heating their home and unfortunately provisional figures from this year's survey are telling a very similar story."This problem is not going away."Mr Monaghan said fuel poverty in Northern Ireland was at a high level, particularly among pensioners, with one in five of their members expressing a concern about the high costs.He added: "That should be a shocking statistic, but it has become the norm."We know that work is being done to address the energy efficiency of homes and develop a long term sustainable energy supply."However, this work is of little comfort to thousands of pensioners who are finding it tough now."That is why we are calling on the Northern Ireland Executive to use some of its additional funds to help pensioner households keep warm."