GLOBAL RENEWABLES & HYDER

WASTE SYSTEM COST CALCULATOR

WASTE SYSTEM COST CALCULATOR

Different people may be responsible for understanding the detail of individual waste management system components

Global Renewables identified the need for a “big picture overview” of the full system

Likely to be the biggest financial commitment any council will make (when you consider the full system)

Aim to minimize the costs to councils of achieving required resource recovery level

KEY ASSUMPTIONS

AWT diversion rates:

2-bin system 59%

3-bin system 57%

3-bin + food system 43%

4-bin system 43%

Default waste collection costs:

Residuals - $1.00/lift

Recycling - $1.20/lift

Organics - $1.40/lift

Other (adjustable) default costs

Landfill contract (ex. levy) - $65/t

Recycling gate fee - $25/t

Compost gate fee (garden organics) - $110/t

Compost gate fee – (garden and food) - $130/t

AWT processing cost (ex. disposal) - $150/t

Landfill disposal of AWT residuals - $45/t

INTERESTING FINDINGS

Based on trials with several councils, the model has been accurate in predicting diversion from landfill and total system costs

Within 1-3% of reported diversion rate

Default costs in the right ballpark

Ability to adjust with user-specific information as available

Lowest cost option to reach 66% target appears to be 3-bin

Dry recyclables

Garden organics to open windrow processing

Residual to AWT

The 3-bin system is marginally the lowest cost per tonne of waste diverted as well as total system costs (if GO contamination is low)

BUT – very much “horses for courses” depending on local conditions - e.g. can low GO contamination be achieved?

Most councils won’t achieve 66% target without AWT or very high GO percentage and relatively low residuals percentage

3 BIN – INNER SUBURBAN

3 BIN - INNER

3 BIN – OUTER SUBURBAN

3 BIN -OUTER

2 BIN

2 BIN

SYSTEM COMPARISON

TYPICAL RESULTS Diversion System Cost over 10 years

Cost/tonne of Waste Diverted

Bin Configuration Region Type Landfill AWT Landfill AWT Landfill AWT

2 bin suburban Sydney 20% 67% $80M $77M $739 $216

3 bin inner suburban Sydney 46% 77% $124M $120M $307 $176

3 bin + Food inner suburban Sydney 58% 76% $131M $134M $325 $219

3 bin outer suburban Sydney 54% 81% $178M $173M $251 $165

3 bin + Food outer suburban Sydney 65% 80% $195M $199M $275 $205

Overall costs broadly similar between AWT and landfill scenarios

Diversion rate significantly higher in all scenarios using an AWT

Differential between cost per tonne of waste diverted is highest in areas with low levels of garden organics

MODEL STRUCTURE

Aims to take account of total system costs

Equipment (MGBs / bench top bins)

Education

Bin lifts

Processing

Disposal

Does NOT address landfill external costs (other than GHG) or collection fleet effect on roads

Generic structure based on 10 year assessment (2014-2024)

Pre-loaded with NSW 2009-10 WARR Data

Allows for council-specific data to be included

Could be further modified to suit individual councils

LIVE DEMONSTRATION…..

CONTACT

If you would like further information about this presentation please contact John Lawson at Global Renewables – (02) 9235 1377

The model will also be available soon on the Global Renewables web site - www.globalrenewables.com.au