Global ranking of Top 500 influencers active on Twitter in Building Services, involved with mechanical and electrical engineering, FM, RACHP, ventilation, heating, plumbing and pipework, on-site renewables and hydrogen, BMS, energy efficiency and saving, smart homes and building controls, testing and accreditation, skills and training. Weekly update day: Wednesday.

The Top 500 ranks Players on the basis of scores that measure interactions and influence across social media.

Curated and Managed by @SustMeme, the data is published by McClelland Media Ltd, in association with Elemental — an online community for professionals focused on heat, water, air and energy, looking at how we effectively manage these vital elements within the built environment, now and in the future — @_elementaluk 

To nominate a person or organisation for potential inclusion on this ranking, please simply Tweet the Twitter Username of the nominee to @SustMemeTop500, using the hashtag #Top500ADDBuildingServices.

To view other SustMeme sector rankings, please return to the main Top 500 menu. For all news of Top 500 releases, updates and peer group notifications, please Follow dedicated Twitter feed: @SustMemeTop500.

To access and learn more about the full range of Top 500 Player options, please see the SustMeme User Guide, plus visit the Building Services Top 500 host platform direct.