The measures promote working remotely several days a week to save fuel, switching off lights in public buildings and shop windows when not in use, and closing windows and doors to reduce the strain on air conditioning and heating systems.
The measures remain only recommendations for private households.
Energy Minister Teresa Ribera said last week households could save energy for example by turning off lights and lowering blinds.
The government has already approved mass installation of solar panels on the roof public buildings' roofs and encouraged civil servants to work more from home.
Spanish Prime Minister Pedro Sanchez proposed last week that ministers, public officials and private sector employees stop wearing neckties during hot summer months.