The European Energy Charter Conference accordingly began negotiations on a Basic Agreement - later called the Energy Charter Treaty - designed to promote east-west industrial cooperation by providing legal safeguards in areas such as investment, transit and trade. It also began negotiations on Protocols in the fields of energy efficiency, nuclear safety and hydrocarbons, although in the last case negotiations were later suspended until completion of the Energy Charter Treaty. Negotiations on the Energy Charter Treaty and the Energy Charter Protocol on energy efficiency and related environmental aspects were successfully completed in 1994.
Decision VI/13 of the Meeting of the Parties to the Montreal Protocol provides that the evaluation of alternatives to hydrochlorofluorocarbons should take into account such factors as ozone-depleting potential, energy efficiency, potential flammability, toxicity and global warming and the potential impacts on the effective use and phase-out of chlorofluorocarbons and halons.