https://communities.bentley.com/products/building/performance/f/hevacomp-forum/173255/lighting-consumption-part-lHi Im running a Part L calc for a health care facility, using LED lighting everywhere. the lighting design has been completed according to design standards. but my actual lighting end use is double the notional. what would cause the notional buildingen-USTelligent Community 12https://communities.bentley.com/thread/499777?ContentTypeID=1Tue, 08 Jan 2019 10:34:31 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:23f4a232-1474-4211-8df5-55015c1597d7Shane Regan<p>Hi David,</p> <p>I&#39;m afraid we are not best placed to comment on such results, as the notional building is entirely down to the calculation methodology defined in SBEM and the NCM -&nbsp;your accreditation scheme provider or BRE (you can contact them <a title="BRE" href="http://www.uk-ncm.org.uk/">here </a>via Feedback)&nbsp;would be much better placed to advise.</p><div style="clear:both;"></div>