Converting Waste to Energy An Abundant and Growing Source of Renewable Energy
Abundant Renewable Energy The most abundant energy source on earth Houses exposed to 20-30 times...
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Abundant Renewable Energy
•The most abundant energy source on earth
•Houses exposed to 20-30 times more energy than used
•Earth exposed to 11,000 times more energy than total global use
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Here Comes the Sun
Average about 2000 hours of bright sunshine a year
– Invercargill 1615h – Christchurch 2000h– Blenheim 2450h
Germany 1600h avg
Spain 3000h avg
Yuma, Ariz. 4055h avg
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More Benefits of Solar
Saves an average of 2400kWh/year/house electricity
Saves $350 - $400 per year at current electricity prices
Prevents CO2 emissions of almost 30 tonnes each house, life of system (0.6kg/kWh)
4 m2 flat plate collector with horizontal tank
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How Do They Work?
Evacuated Tube System Flat Plate System
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Solar Water Heaters
Evacuated Tube System Flat Plate System
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Solar Water Heaters
Evacuated Tube SystemFlat Plate System
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Case Study
Family of four in three bedroom house in Nelson:
– Total system cost = $5200 (incl GST) includes building consents and installation
– Marginal cost = $3300 (hot water cylinder = $1900)
– Save 3000kWh/year electricity– Save $360/year (marginal cost of
electricity = 12 c/kWh)– Simple payback = 9.2 years
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Large-scale systems
Novotel Hotel, Homebush, Sydney
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National and Environmental Benefits
Current = 22,000 Houses
0
100
200
300
400
500
600
700
800
900
1000
GWh p.a. Saved
1/3 Households = 466,666 Houses
936 GWh p.a.
(3.3 PJ)
671,000 Tonnes of
CO2
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Solar Water Heating on New Buildings
Building Act 2004 - Greater consideration of renewable energy and energy efficiency in new
buildings
Building Code - Must respond to the Act– Minimum home energy performance standards – Solar water heating may be one ‘acceptable solution’
to meeting requirements of Act.
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The New Zealand Solar Water Heating Industry
12 accredited suppliers of systems
Approx. 150 approved installers nationwide
Industry association = Solar Industries Association (SIA)
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Status of New Zealand Industry - Products
3 companies manufacture systems in New Zealand
Other systems imported from Australia, Israel, China.
90% flat plate collectors
10% evacuated tubes
Total Cost: $4000 - $7500 for a domestic system, including installation.
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A Mature and Growing Industry
0
500
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3500
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4500
2000 2001 2002 2003 2004 2005
Year
Sal
es p
er y
ear
Sales35%
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Status of New Zealand Industry - capacity
Installing ~ 2000 systems per year currently
About 35% annual growth rate
Target - 10,000 systems per year within 3 years! ($40 - $50 million sales revenue, 1000 jobs)
Need to break out of a narrow market niche
Need much greater growth rates
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What is EECA doing?
Technical Standards
Installer Training
Accreditation
Code of Practice
Solar Industries
Association (SIA)
Incentives
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EECA’s Finance Assistance Programme 2004/05
Interest Free Terms
– Industry wide finance scheme - single finance provider (FAI Finance Ltd)
– Up to 36 months interest free
– EECA provides up to $450 per unit to cover finance costs
– Funding approximately 450 systems ($200,000)
Launched 15 November 2004
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Interest-Free Terms
Borrow up to a maximum of
For an interest free term of
Monthly repayments
$7,450 12 months $620.83
$4,500 18 months $250.00
$4,000 24 months $166.67
$3,000 36 months $83.33
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Are You Eligible?
•Buy your solar water heater from an Accredited Supplier
(visit www.solarindustries.org.nz)•Purchase a system that costs at least $2,500
•Purchase a system with a collector area of 2m2 or greater
•Purchase a system before 30 June 2005. Act Quickly!
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www.eeca.govt.nz