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Eco Energy Update: Programs, Technology, Economics
Eco Farm Day 25 February 2012
Chris Weissflog BSc, MSc, MBA
CanSIA, RASDT, RHDT
EcoGen Energy Inc, Kemptville
Agenda
• Context
• Renewables
• Incentive Programs and Economics
• The Passive House Method
• Ultra-Efficient Eco-Home Project
Energy Prices: 1990 to 2006
Average Consumer Energy Pricing - 1990 to 2006
$0.00
$0.10
$0.20
$0.30
$0.40
$0.50
$0.60
$0.70
$0.80
$0.90
$1.00
1990
1992
1994
1996
1998
2000
2002
2004
2006
Year
Unleaded
Gasoline
Home
Heating
Oil
Natural
Gas
5 Year Annual Rate:
•Unleaded: 7.00%
•Heating Oil: 7.65%
•Natural Gas: 7.20%
Energy Prices: 1990 to 2012
$0.00
$0.20
$0.40
$0.60
$0.80
$1.00
$1.20
$1.40
1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011
Unleaded
Propane
Poly. (Unleaded)
Poly. (Propane)
Energy Prices: Outlook
• Ontario MEI, Electricity Prices:
– Next 5 yr: 7.9% increase per year (= 46%)
– Next 20 yr: 3.5% average increase (=100%)
• Petroleum (analyst prediction):
– $150/barrel in 2012 (+50%, temporary?)
• Natural Gas: prices have fallen!
– 2006: 57.7 ₵/m3
– 2012: 36.3 ₵/m3
Conventional Energies:
Costs & Carbon
0
20
40
60
80
100
120
140
Natural Gas Oil Propane Electricity
Cost ($/MWh)
Conventional Energies - Cost per MWh
0
0.05
0.1
0.15
0.2
0.25
0.3
Tonnes GHG
Natural Gas Oil Propane Electricity
Conventional Energies - Tonnes GHG per MWh
Approach to Energy
• Conservation 1st
• Efficiency 2nd
• Generation (renewable) Last
Renewable Energy
Generation
• 1,000 watts per m2
Solar Resources
1m x 1m
Average Daily Energy in Collector Plane
0
1
2
3
4
5
6
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Month
kW
h / m
2 / d
ay
• Heat fresh or re-
circulated air
• Process heat (crop
drying)
• Rapidly Developing:
– Building cladding
– Passive cooling
– PV / Thermal (“PV/T”)
Solar Air Heating
• Homemade solar wall
• 12’ x 30’
• 33% to 50% heat
Example: Allan’s Tool Shed
Solar Water Heating
• Pre-heat system
• Proven technology
• Different from Solar
Electric - turns sunlight
into heated water
• The most cost-effective
solar energy system
• Solar Fraction
Solar Water Heating
Energy Production
Solar Thermal Systems Integration
Energy Production
Available for Other Use (Pool? Other?)
Space and Water Heating Energy Need
Water Heating Energy Need
Electricity from the Sun
Photovoltaic – PV:
• Very long life
• Virtually no servicing
• On or Off-Grid applications
• Peak production matches peak grid demand
Electricity from the Sun
• Off-Grid: good
complement to PV
– Typically 1kW to 10 kW
• Primary factor: wind
resource
• Larger = better economies
Small Wind Turbines
Wind Resource at 30m AGL
Wind: Economics of Size
Size kW 1 10 80 250 850 1650 2750
Height m 18 30 30 50 50 80 100
Cost $ $8K $70K $250K $750K $3M $5M $6.5M
Energy Output MWh
Yr
1 8 79 378 1330 3771 4690
Lifetime Yrs 10 15 18 20 25 25 25
Cost/kWh $/kWh 72¢ 59¢ 18¢ 7¢ 10¢ 5¢ 6¢
Simple Payback Yrs 64 68 28 12 18 12 12
Cost of Energy by Turbine Size
1
10
80250 850
1650 2750$0.00
$0.10
$0.20
$0.30
$0.40
$0.50
$0.60
$0.70
$0.80
0 500 1000 1500 2000 2500 3000Turbine Size (kW)
Co
st
pe
r k
Wh
Q&A
Biomass
• Forest & Agriculture sources
• Agriculture:
– Energy crops (switchgrass, reed
canarygrass)
– Crop residues (straw & stalks)
– Potentially better revenue from marginal
lands vs beef
• OPG sourcing?
Biogas
• Anerobic biodigester
• 100kW – 500kW, or larger
• 100 - 400 milkers, or larger
• CHP: Electricity & Heat output!
• Useful, safe, clean, odourless nutrient
• CO2 20:1 less GHG than methane
• Factors:
– Sources of additional feedstock (FOG)
– Electric service capacity
Biogas
Market Developments,
Incentives & Economics
Market Developments
• Solar Thermal: – No significant change in technology or pricing
– Broader technological penetration into NA (USA)
– Canada: marginal incentives, negligible
demand, fewer businesses selling & supporting
• PV: – Rapid increase in global production & innovation
– Dramatic international price drop on PV cells
– Dramatic increase in supply options in Ontario
– Impact: ROI changes, system optimization
nuances, closer to “grid-parity” (2017?)
Market Developments
• Wind: – Foreign companies manufacturing in Canada
– “Go big or go home”: primarily big wind projects
in areas of good wind conditions
• Biomass: – OPG biomass demand seems to have stalled
• Biogas: – Range of biogas developers / manufacturers in
Ontario
Efficiency Incentives
• ecoENERGY Retrofit Incentive for
Buildings Cancelled
• OPA / saveONenergy / HPNCP (incl
retrofits) – Up to $400 per saved kW / $60 per appliance
• OPA / saveONenergy / Retrofit
Program – Up to $800 per saved kW / 10₵ per kWh saved in
first year
Efficiency Incentives
• COFSP – Growing Forward
Environmental & Climate Change
Initiative – Category 26: Energy Conservation Measures
– For conservation or renewable energy
generation
– Up to $5K, up to 30%
– 2012 funds allocated – no more money!
• Enbridge – One-Time Retrofit – Up to $100K @ 10₵ /m3 saved in first year
– Consulting support available
Renewable Energy Incentives
• ecoENERGY Renewable Heat
Cancelled
• Ontario Solar Thermal Heating
Incentive Cancelled
Renewable Energy Incentives
• OPA / saveONenergy / Retrofit
Program (business only) – Solar water heating eligible if water heated by
electricity
• $320/m2 collector area x Performance Factor
• Typically 25% to 35% of project cost
• Result: 6-10 year payback
– Solar air heating
• Up to $800 per saved kW / 10₵ per kWh saved in first
year
• Assessed on case-by-case basis
Renewable Energy Incentives
• Enbridge (when asked about
incentives for solar water heating):
“While we do not have any programs that
apply in this case at the moment, I think that
we may be looking at these programs very
soon.
For a quick answer, technically we do not have
a program that would help in this case, but the
long answer is "check back in a month or two
and my answer could very well change".”
Renewable Energy Incentives
• OPA Feed-In Tariff
– Program under review, frozen since
September 2011
– Demand at standstill – lay-offs, folded
businesses, internationals pulled back
– PV:
• CanSIA recommendations available on web
• Announcement expected March 2012
• Tariffs unknown, probably about 25% lower
• May be new categories, new rules of
participation, quotas, RFP for larger projects
Renewable Energy Incentives
• Imminent MOL interim ruling on PV
labour: electricians only
• Impact:
– reduced availability
– increased cost (add approx. 3%-5%)
• Final ruling to follow IBEW Labour Board
challenge
Renewable Energy - Economics
• Solar Water Heating:
– 6 to 10 year payback with electric water
heating
• Solar Air Heating:
– 5 to 10 year payback
– Potential incentive if heating with
electricity
• Wind:
– Outside the reach of most
Biogas - Economics
• OMAFRA / BSFAP
– Feasibility study ≤ $35K
– Construction & Implementation • Each ≤ $400K, ≤ 40%
• 100kW, 100x milkers:
– $750K - $300K = $400K installed
– $133K / yr (@16¢/kWh)
• 500kW, 300x milkers:
– $2M - $400K = $1.6M installed
– $667K / yr (@16¢/kWh)
• Significant Operating Costs
• ~7 year payback / 20 year contract
Passive House
What is “Passive House”?
• Design methodology and standard from
Germany (“Passivhaus”)
• Not “passive solar”, but inclusive of it
• As prescribed set of energy performance
criteria (heating, cooling, consumption
maximums)
• Performance modeling software tool
• Certification process
• Adopted & adapted in various countries
• Estimated 100,000 PH buildings in Europe
• Driving new European building codes
Passive House Characteristics
• Super-insulation:
– Walls ~R70
– Ceiling ~R100
– Floor ~R60
• Attention to thermal bridge details!
• Extreme airtightness: <=0.6 ACH50
• Highest performance windows:
– R values
– Solar Heat Gain Coefficients
• Highest efficiency heat recovery
• Shading, thermal mass
Passive House Examples
Passive House Performance
• No “furnace”- just a small heat source
• Comfort:
– max ΔT = 4°C (windows); even temps
– no drafts / forced air currents
– 50% RH year-round
• Heating: 1.5 kWh/ft2 / year
– Example: 2,000 ft2 house*
• <3,000 kWh = <$420 electricity / <$120 Natural Gas
• Low maintenance costs
• Minimized carbon emissions
• Positive NPV (vs “code” home)
Ultra-Efficient Eco-Home
Project
Ultra-Efficient Eco-Home
• Passive House –Optimized for “Resiliency”
• Integrated solar thermal with seasonal energy
storage:
– Highest COP / lowest energy consumed to heat
– On-site heat generation = thermal independence
– Extra thermal energy for other selective functions:
• extended growing season for home-scale agriculture
• alternative: pool heating
• High thermal mass
• Hydronic radiant heating
• Grid-Interactive (net metered / off-grid back-up)
• MicroFIT (revenue generation) / cost-neutralizer
• Virtual zero risk from energy inflation
Ultra-Efficient Eco-Home
Energy Production
Available for Storage & Other Use
Space and Water Heating Energy Need
Water Heating Energy Need
Eco-Home: Benefits
• Comfort
• Cost-neutral (over time)
• Zero emissions
• Low energy consumption
• Energy resilience
• Food resilience
• Reduced complexity: simple systems, simple
maintenance
• Virtual independence