The Thai Industrial Standards Institute (Tisi) expects 100 businesses will apply for the ISO 50001 international standard for energy efficiency, which has been available in Thailand for two years now.
Since its local introduction in 2011, when many provinces were hit by major floods, only 70 companies have been accredited with the new standard.
Tisi secretary-general Urit Srinongkote said rising electricity bills these past two years have prompted businesses to look at ways to trim energy costs.
"We expect the private sector will start paying more attention to this new certification," he said.
ISO 50001 could enhance energy efficiency by an average of 20%, said Mr Urit. More than 10 accreditation companies provide service for the new standard.
Tisi's survey reported 62% of energy use in offices is consumed by air conditioners and ventilation systems, 16% by lighting, 8% office automation and 4% escalators and elevators.
Large manufacturing firms that have received the certification include PTT Plc and Charoen Pokphand Group.
"This certification will not only cut energy costs but also help Thai companies be more green, which will improve their image," said Mr Urit.
He said firms that have already received ISO 14000 for environment management systems and standards can have easier access to ISO 5001 certification, as accreditation criteria are similar.