To increase energy efficiency and reduce cost, the following recommendations apply:-Minimise the demand as much as possible. -Avoid inappropriate use of compressed air.-Do not over-design – the reliability of modern compressors is very high. -Investigate hiring mobile units to provide standby capacity. -Plan the installation in line with the master plan and avoid installing capacity for future extensions. Increasing compressor capacity is not a major problem if the rest of the system has been designed accordingly.Take into account leakage, but never more than 7%.