Bath & North East Somerset Council, B&NES Schools Energy Efficiency , Energy at Home, Keynsham Civic Centre Tour 16 June 2015

Schools energy programme

Cut wastage, save school budgets, save CO2

… and end up with more comfortable buildings.

The facts:

1. 78 schools in B&NES2. Spend £2.2m each year on gas and electricity 3. 11,000 tonnes of CO2 and rising4. Local and national targets to reduce CO2

Energy Surveys

Building fabric PeopleEnergy & heating usage data

• Each site receive their own report

• The Council received an overall report

(Example of junior school report to circulate)

Business Case:Typical Primary school

5

Cost saving (£) Cost (£)

Operating

cost (£)

Carbon

saving

(tCO2/yr)

% of

Energy

Cost

% of

CO2 Payback

Awareness £296 £0 £0 2 4% 4% 0.00

ICT £114 £0 £0 1 2% 1% 0.00

Control settings £151 £275 £0 1 2% 3% 1.83

HVAC - Recommission controls £402 £736 £0 3 4% 5% 1.83

Lighting £738 £2,679 -£11 4 12% 10% 3.58

HVAC - New controls £397 £2,275 £75 3 3% 3% 7.06

Renewables £909 £15,627 -£426 5 9% 7% 11.70

Boiler Replacement £739 £13,365 £0 5 5% 7% 18.08

£3,746 £34,956 -£362 22 42% 40% 8.51

Individual reports: Building fabric and systems

Individual reports: Building fabric and systems

Individual reports: data

Individual reports: data and diagnosing problems

Typical Primary school

9

The cumulative

cost avoidance

over the 5 year

period is:

£23,602

The annual

figure by

2015:

£3,934

Individual reports: Business case

Overall findings: Building fabric

Building Age and Energy Use

Overall findings: Building fabric

Gas AMR Analysis 2011 - 2012

Overall findings: Energy and heating usage data

• Adjust times and set points• Gradual adjustment of frost protection• Caretaker training• Change log created• Review impact of changes • Go back to Schools if further tweaks required

….How to repeat annually? Integrate with annual boiler service?

Recorded Savings

The challenging bit!

• Lights and PCs left on

• ICT suite turned on 1st thing then off at the end of the day

• Kitchen staff turning sterilizers and hot cupboards on 1st thing.

• No heating system is the same. Needs someone with knowledge to tweak

• Heating times and settings set incorrectly

• Could make better use of AMR data to better understand energy consumption. This is particularly useful for identifying heating controls issues. But, needs someone knowledgeable

19

Overall findings: People

Total SavingsTotal Survey Results Analysis

Number of Schools Surveyed 71

Number of Identified Projects 483

Total Identified Utility Savings £432,208

Total Estimated Cost of Identified Projects

£1,387,520

Total Annual Co2 Saving (tonnes) 2430

Combined Payback of Identified Projects

2.5 Years

It is now up to schools to action and make their savings.

Overall findings: Business case