1. National Botanic Garden of Wales
Integrated Energy Systems Presentation 2015
Jamie Sutherland MIET MBIFM

2. NBGW - Heating NBGW – PV Solar The Future
Contents
NBGW - Heating
NBGW – PV Solar
The Future

4. National Botanic Gardens of Wales Heating
NBGW Heating:
7 Buildings Heated by Biomass
3 Buildings Heated By Oil
9 Buildings Heated By Propane Gas
3 Buildings Heated By Electricity

5. National Botanic Gardens of Wales Heating
Energy Centre
2 x 1000 KW x 500 KW
Back up Oil Boilers Biomass Boiler

6. National Botanic Gardens of Wales Heating
Biomass Boiler
£283.6K to install
Renewable Heat Initiative 5.18p/kw/hr
Return of Approx £40K Per Annum in RHI

7. National Botanic Gardens of Wales Heating
Biomass District Heat Main
Heats 7 Buildings
2 x 1000 KW Oil Boilers (Back Up)
1 x 500 KW Biomass Boiler
5” District Main Pipeline – 3000 Gallons of Water
Great Glass House Principality House Stable Block Nursery Glass Houses

8. National Botanic Gardens of Wales Heating
The Rest of The NBGW Buildings Use Stand Alone Propane/Oil Boilers or
Electricity
Each Building Has Differing Demands

9. National Botanic Gardens of Wales Heating
Tropical Green House
180C Day & 140C Night
90 % Humidity By Mist Spray
Borehole Humidity 2oc Quenches Air Temperature
£14k Propane /Annum

10. National Botanic Gardens of Wales Heating
Aqua Lab
Water Source Heat Pump £1k /annum Electricity
Wallace Garden
Electrical Convector Heater

11. National Botanic Gardens of Wales Heating
Chemists Shop, AV Theatre & Science
180C – Propane
£20k / annum

12. National Botanic Garden of Wales Overall Energy Consumption
100% Biomass: £36k annually
Stable Block, Great Glass House, Nursery Green Houses,
Principality House.
100% Propane: £48k annually
Tropical Glass House, *Principality House, Polytunnels,
Chemists shop, AV Theatre, Marquee, Science Centre
100% Oil: Horticultural Offices, Farm, Student Houses £8k annum
100% Electricity: Visitors Gatehouse, Garden schoolroom £4k annum
Water Source Heat Pump Aqua Lab £1k annum
Mains Electricity £82k Annually

13. National Botanic Gardens Of Wales Small Commercial Scale Photo Voltaic
Small Commercial Scale 50 KW 36.53p/kw/hr
£130K to install and gives a return of approx £20K per annum

14. PV Sites Small Scale Large Scale 1. NE Rough Ground 2. NW Rough Ground
11. Visitor Car Park
Small Scale
3. Gatehouse Roof
4. Energy Centre Roof
5. Nursery House Roof
6. Workshops x 3
7. AV Theatre Roof
8. Chemists Shop Roof
9. Slip Garden
10. Bee Centre Roof
12. Science Block Roof

15. Questions?