Sustainable Cities Case Study Goldfields Oasis Recreation Centre - PowerPoint PPT Presentation

Sustainable Cities Case Study Goldfields Oasis Recreation Centre Alternative Energy Project Ryan Wilson, CKB Sustainability Officer 13.11.2015

Project Summary Goldfields Oasis Recreation Centre Alternative Energy Project 2 Solar PV Completed June 2013 3 Ground Source 1 Heat Pumps Completed July 2014 Solar Thermal Completed January 2013 Total Project Cost: $2.64M Funded by Federal (CEEP), WA (LEED) governments ($1.15M) and CKB ($1.49M) CKB Sustainable Cities Case Study 2

Solar Thermal • Project cost: $270K ($152K funded by CKB) • Projected natural gas savings: 1,200GJ/year • Projected cost savings: $38,000/year • Projected PBP: 4.1 years (7.2 overall) CKB Sustainable Cities Case Study 3

Solar Photovoltaic (PV) • 135kW roof-mounted system • Project cost: $371K ($209K funded by CKB) • Annual electricity production: ~240MWh • Annual cost saving: $65K inc. LGCs • Projected PBP: 3.2 years (5.7 overall) CKB Sustainable Cities Case Study 4

Ground Source Heat Pumps • Cost of natural gas rose 43% from 2008-10 • Cutting edge combined vertical and horizontal GHX • World first combination with solar thermal and solar PV • Addition of piping to connect HVAC in July 2014 to further increase efficiency of the system (~35MWh/year electricity reduction) CKB Sustainable Cities Case Study 5

Horizontal and Vertical GHX CKB Sustainable Cities Case Study 6

Ground Source Heat Pumps • Project cost: $1,996,000 ( $1,124,000 funded by CKB) • Projected annual natural gas reduction: ~7,100GJ • Additional net electricity consumption: 300,000kWh/year (~$60,000/year) • Projected net savings from reduced natural gas consumption: ~$112,000/year • Projected ROI: 10 years (17.8 overall) CKB Sustainable Cities Case Study 7

Natural Gas Consumption Annual Cost of Natural Gas ($) Annual Natural Gas Consumption (GJ) $300,000 12000 Solar Thermal Solar Thermal Installed 11,137GJ $250,000 Installed 10000 $251,114 9,240GJ $200,000 8000 Ground Source Heat Pumps Ground Source Installed $150,000 Heat Pumps 6000 6,046GJ Installed $185,922 $100,000 4000 $106,205 3,508GJ $50,000 2000 $0 0 2009/10 2010/11 2011/12 2012/13 2013/14 2014/15 2009/10 2010/11 2011/12 2012/13 2013/14 2014/15 CKB Sustainable Cities Case Study 8

Electricity Consumption Annual Electricity Consumption (MWh) 1800 1,720MWh 1700 1600 1500 1400 Solar PV, Solar Thermal Ground Source Heat Installed 1300 Pumps Installed 1,423MWh 1,367MWh 1200 1100 1000 2011/12 2012/13 2013/14 2014/15 CKB Sustainable Cities Case Study 9

Project Summary • Successful demonstration of a combined solar thermal, solar PV and ground source heat pump system (world first) • Net reduction in CO 2 emissions: ~210 tonnes/year • Equivalent to: • Removing 44 passenger vehicles from the road • Planting 5,500 seedlings and growing them for 10 years • Net saving ~$150K/year (10 year PBP on CKB funds) • PBP drops to 8 years with a 5% annual increase in price of natural gas CKB Sustainable Cities Case Study 10

Questions? CKB Sustainable Cities Case Study 11