Paul Lau, Sacramento Municipal Utility District (SMUD) - Speaker at the marcus evans Generation Summit held in Dallas, TX, February 25-26, 2013 delivered his presentation entitled Attaining Sustainable and Balanced Power Supply while Achieving Long-Term GHG Goals
Improving Power Plant Performance & Safety-David Orme, Ranger Steel Inc.
Similar to Attaining Sustainable and Balanced Power Supply while Achieving Long-Term GHG Goals - Paul Lau, Sacramento Municipal Utility District (SMUD)
Similar to Attaining Sustainable and Balanced Power Supply while Achieving Long-Term GHG Goals - Paul Lau, Sacramento Municipal Utility District (SMUD) (20)
2. Outline
• SMUD Overview and history of
Investment
• Climate Change Impacts & Policy
• Renewables Solution
• Energy Efficiency Solution
• Challenges & Opportunities
3. S U Overview
SMUD O e e
• Publicly owned utility formed in
1946
• Governed by independent
locally elected governing Board
of 7 members
• Serves electricity to 1.3 million
y
people in Sacramento region
• 2,100 Employees
• Peak Demand of 3,300 MW
• Annual Sales ~11,000,000 MWh
4. History of Investment in
Sustainable Energy
• 1960’s constructed Upper American River Hydro Project
pp y j
• 1970’s began Energy Efficiency Programs
• 1984 1st Utility Scale Solar PV Project
• 1989 Closed Rancho Seco Nuclear Power Plant
• 1990’s 1st CO2 inventory Investment in 300 MW of cogeneration, initial
1990 s inventory, cogeneration
investment in wind energy, launch of rooftop solar program,
Greenergy program
• 2001 Board-adopted 20% RPS, helped launch California Climate
Action Registry
• 2004 1st entity to certify emissions with CCAR, 15 MW Solano wind
farm completed
• 2006 completed 500 MW Cosumnes, one of most efficient natural gas
power plants in the country
• 2007-8 adopted 15% EE goal, 33% RPS, 90% Carbon reduction goal
• 2010 only major utility to achieve 20% RPS, 100 MW solar FiT
• 2012 finished buildout of windfarm to 225 MW, RPS contracting to
achieve 33% RPS fi i h d AMI d l
hi RPS, finished deploymentt
4 3/4/2013
5. Motivations/Impacts of Climate Change
Major impacts to Planet,
Major impacts to Planet
State, Sacramento
Limited Conflicting
Investments
Leadership Empowered
p
with Options to Address
Issue
5 3/4/2013
6. ales (MWh)
Electricity Sa
Retail E
20% below 1990
Emissions Today, 30%
below by 2020
below by 2020
7. SMUD Board Policy on
Sustainable Energy
• Sustainable Power Supply reduces SMUD’s long-
term greenhouse gas emissions from generation of
Electricity to 10% of its 1990 carbon dioxide emission
levels by 2050 (<350,000 metric tonnes/year), while
assuring reliability of the system; minimizing
environmental impacts on land, habitat, water quality,
and air quality; and maintaining a competitive
position relative to other California electricity
providers. T guide SMUD i it resource evaluation and
id To id in its l ti d
investment, the Board sets the following interim goals:
Year Net Greenhouse Gas Emissions (metric tonnes)
2012 2,608,000
2020 2,318,000
7
8. Board Greenhouse Gas Emissions Targets for SMUD Retail Load through
2050 ‐ 90% below 1990 levels
2050 ‐ 90% below 1990 levels
4,000,000
Cogen Emissions
es CO2
Cosumnes Emissions
3,500,000
Gas Emissions ‐Metric Tonne
Emissions History and Projections
3,000,000
30% below 1990 levels in 2020
2,572,209
2 572 209
2,500,000
2,319,928
2,000,000 2,028,748
‐
90% below
90% below
Greenhouse G
1,698,889
1990 levels
1,500,000
1,361,667
1,000,000 1,024,444
SMUD Total G
687,222
500,000
350,000
0
1990
1992
1994
1996
1998
2000
2002
2004
2006
2008
2010
2012
2014
2016
2018
2020
2022
2024
2026
2028
2030
2032
2034
2036
2038
2040
2042
2044
2046
2048
2050
9. Meeting our Goals – RPS, EE
• To meet our carbon objectives SMUD’s
objectives,
Board has adopted a 33% by 2020
Renewable Portfolio Standard goal
goal,
extending our 20% by 2010 goal,
consistent with state policy
• In addition, the Board adopted more
aggressive energy efficiency goals of
ff f
15% of retail load by 2023
10. 33% RPS plus 4%
Greenergy in 2020
20% RPS and 3%
Greenergy in 2010
12. Solar Energy Growth at SMUD
180
160
Installed and Forecast Solar Capacity
Installed and Forecast Solar Capacity
140
120 SB1, Actual & Planned
100
tts
Non-SB1, Actual & Planned
80
Megawat
60 FIT
40
20
0
2007 2008 2009 2010 2011 2012 2013
Year
13. PV Issues For SMUD
Average 15 Minute Interval Peak Demand ZEH vs. Non ZEH July, 2005
MW Avg High temp 98 degrees F
Avg Min Temp 65 degees F
kW
• PV coupled with high
3,500
System Peak MW
Average of ZEH Net Grid Load (kW)
2.9 kW
3.5
efficiency measures can
3,000 Average of Power Produced by PV (kW)
Average of Non-ZEH Net Grid Load (kW)
Non ZEH
3
reduce home peak load by
2,500
Avg Gross Load (Kw) 2.5
55%
2.2 kW; 24% 2
2,000
1.6 kW
1.5
• Significant shift still
1,500
1.2 kW; 25%
1.3 kW; 55%
1
between solar peak and
0.5
system peak
t k
1,000
0
• Intermittent production
500
-0.4 kW; 125% -0.5
resulting from partly cloudy
0
12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11
-1 conditions
AM AM AM AM AM AM AM AM AM AM AM AM PM PM PM PM PM PM PM PM PM PM PM PM
Time
14. Wind Intermittency
Correlation = 59.2%
C l ti 59 2%
1800 90
• SMUD’s peak load driven
tion (MWh/Day)
1700 80
1600 70 by hot summer
SMUD Load (MW)
1500 60
1400 50 temperatures
p
d
Wind Product
1300 40
1200 30 • Wind resource weakest
1100
1000
20
10 on hottest days
900 0
1 31 61 91 121 151 181 211
Day of the Year
241 271 301 331 361 • Comparing daily and
Daily Ave 2002-03 Load Daily Wind Production (MWh/Day)
hourly system load with
Solano Wind Plant
3000 9.0
90
production illustrates
2500 7.5
mismatch
Wind Production (MW)
System Load (MW)
2000 6.0
1500 4.5
• Must rely on firming
1000
500
3.0
1.5
resources to address
0 0.0
mismatch and ensure
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
7/22/03 S t
Hour
System L d
Load Ave. Jun-Aug
A J A 2003 Wi d P d ti
Wind Production
system stability
15. R&D Integration Strategies
– New Knowledge (variability,
feeder penetration limits, hi-
penetration impacts, etc.)
– System Planning (i.e., added
flexible reserves)
– New Modeling & Simulation
Tools
– New & Improved Forecasting Methods
– New Inverter Technology (e.g., volt/var control)
– Integration with Smart Grid (communications & control) and
other New Techs (PEVs, DSM, etc.)
– New, Cost-Competitive Storage Options
– 21st Century Electricity Distribution System that
accommodates two-way power flow
two way
16. SMUD s
SMUD’s Energy Efficiency Programs
• Programs initiated in 1970’s, have been aggressively
g , gg y
deploying EE for nearly 4 decades
• Current levels are just shy of 1.5% of customer retail
sales per year, with a goal of attaining th t l
l ith l f tt i i that level b 2020
l by
• Programs offer everything from lightbulb and appliance
rebates to whole building retrofits and Zero-net-Energy
Zero net Energy
approaches
• Emerging Technology R&D and enhanced incentives test
and d i new t h l i t market
d drive technologies to k t
17. SMUD s
SMUD’s EE Program Success
kWh per capita
13,000
12,000
11,000
CA
10,000
US
9,000
9 000 SMUD
8,000
7,000
6,000
1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008
19. Components Of EE Portfolio
0%
0%
1%
Retail Lighting
0%
Prescriptive Lighting Incentives
4% 2%
4% Customized Incentives ‐ Lighting
i d i i hi
5% 32%
Customized Incentives ‐ Non‐Lighting
8%
Business and Consumer Electronics
9% Express Efficiency Incentives
Home Electricity Reports
Home Electricity Reports
Appliance Efficiency
9%
18% Commercial Savings By Design
8% Equipment Efficiency
Distributor Incentives
Shade Trees (Sacramento Shade)
Residential Solar Smart Energy Efficiency
Multi‐Family Retrofit
20. SMUD Projected Resource Mix Through 2050
20,000 EE/DSM ‐ Board Targets to 2020
Unknown Generation
pply GWH
18,000
37% 2020 Renewables Total Retail Demand
Hydro (UARP + WAPA)
Natural Gas Generation Serving SMUD Retail Demand
Allowable Gas Generation with Wholesale Sales
16,000
16 000
y Demand and Resource Sup
14,000
Energy Gap
12,000
12,000
10,000
8,000
jected Energy
6,000
4,000
Total Proj
2,000
‐
200 9
201 1
201 3
201 5
201 7
201 9
202 1
202 3
202 5
202 7
202 9
203 1
203 3
203 5
203 7
203 9
204 1
204 3
204 5
204 7
204 9
21. Role of the Cap and Trade
Program and AB 32
P d
• SMUD supported the development of AB 32 and the
state’s C and T d program, which reduce the
’ Cap d Trade hi h d h
state’s GhG emissions to 1990 levels by 2020
• 1st Auction is November 15th, 2012, program covers
electricity and industry beginning in 2013,
transportation and natural gas beginning in 2015
• We are well positioned to comply with the p g
p py program’s
carbon reduction objectives given our RPS and EE
goals
• We are hopeful that the p g
p program creates appropriate
pp p
incentives for reducing statewide emissions while
providing benefits to the economy through clean tech
growth
22. Conclusions
• SMUD has had a long history of investment in efficiency and
renewables to benefit our customers and reduce our impact
on the environment
• Many challenges arise as renewables (e.g., variability &
integration, transmission to access new, high density
resources) and efficiency ( g , developing new, emerging
) y (e.g., p g , g g
efficiency technologies) grow as sources to reduce GhG
emissions
• The future requires continued dedication and new solutions
such as th S
h the Smart Grid t enable significant renewable
t G id to bl i ifi t bl
penetrations and emerging energy efficiency solutions
• Achieving this transition while maintaining our customer
satisfaction will be challenging but SMUD staff are up to the
challenging,
challenge!