Energy Certificates as a starting point for Energy Management in Buildings

The British Museum has been confirmed as the most popular UK attraction for the 10th year running, with 6,420,395 people passing through its doors in 2016.
The number of visitors, so as the exhibition areas has been increasing, so as needed energy.
Some numbers:
Collection size: approx. 8 million objects (includes the Rosetta Stone, the marbles of the Parthenon, etc);
Visitors: 6,420,395 (2016) Ranked 1st nationally and Ranked 5th globally
Public transit access: Goodge Street; Holborn; Tottenham Court Road; Russell Square;
Website: britishmuseum.org
Area: 102,520 m2 all or 807,000 sq ft (75,000 m2) in 94 Galleries

Map:
The certificate is just outside, close to the main (formal entrance) and a “E”, almost orange label stands out.

Energy certificates may be a starting point to improve Energy Management in Buildings, even a historical one.

Some notes:
- No significant integration of RES (less than 1%);
- Main fuel is natural gas;
- Main energy use Heating;
- Building environment: Mixed-mode with mechanical ventilation.
Lastly the weather (not quite the same as sunny Lisbon…)
Energy consumption (thousand KWh)
Total gas & electricity consumption — 36,313 (2016)
Consumption per million visitors — 5,263 (2016)
Financial indicators (£ million)
Total gas & electricity cost — 2.1 (2016)
Cost per million visitors — 0.3 (2016)
Unlike new buildings, any improvement has to consider the current use, so as its historical features and function. Trustees also have consider the financial investment, so disturbance that any renovation may cause (closing galleries, fewer visitors, etc).
Question is: How could Energy Performance be improved, bering in mind the function, type of building (and its constrains), so the final rating could be improved, closer to the green limit?
#energyinbuildings #ise #energycertificate #digital learning
(HDD): http://www.metoffice.gov.uk/climatechange/science/monitoring/ukcp09/available/annual.html
British Museum: http://www.britishmuseum.org/about_us/the_museums_story/architecture.aspx
British Museum, Building Development Framework Towards the future: https://www.britishmuseum.org/pdf/british-museum-building-development-framework-May-2014.pdf
The British Museum Account 2015–2016: https://www.britishmuseum.org/pdf/BM-report-and-accounts-2015-2016.pdf
Museums and galleries mostly visits: https://www.gov.uk/government/statistical-data-sets/museums-and-galleries-monthly-visits
UK.GOV, Display Energy Certificate (DEC) https://www.gov.uk/check-energy-performance-public-building