Presentation of the Power Supply Plan - Grand Haven Board ......Supply Portfolio Paths Economic...

BURNS ~ £DONNELL.

Grand Haven Board of Light & Power

Presentation of the Power Supply Plan

November 2018

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Agenda

► Power Supply Plan Highlights

► Industry Overview and Trends

► Utility Planning Requirements

► Planning Efforts from 2012 to Present

► Power Supply Options

► Economic Analysis

► Conclusions & Recommendations

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Agenda

Integrated Resource Planning Studies

Replacement Plant Siting Studies

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Internal & Independent Condition Assessment of Existing

MISO Network Compatibility Assessment

Supply Portfolio Paths

Economic Screening/ Cost

Benefit Evaluation

Power Supply Plan

What is a power supply plan?

Primary goal of a power supply plan is to provide an economic evaluation of a utility’s power supply portfolio over both short-term and long-term planning horizons.

Need to focus on short-term decisions that position utility for long-term success.

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Power Supply Plan Highlights

► GHBLP has evaluated its power supply comprehensively since 2012 ► Within the electric utility industry, older, less efficient steam plants are

now higher cost. This is true for J.B. Sims Unit 3. There are less expensive resources available.

► Having Network Integrated Transmission Service (NITS, full service transmission rights), the GHBLP electrical system will be more reliable and also provide the opportunity to access low cost capacity and energy.

► Maintaining appropriate level of on-system generation allows GHBLP to retain local generating capacity while taking advantage of low MISO power prices.

► Snowmelt system can be operated in a “decoupled” configuration with a new natural gas-fired heat generator and electric pumps.

A combination of local on-system resources, market capacity, and renewables would provide GHBLP a well diversified power portfolio.

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Agenda

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Industry Overview and Trends

► Many coal-fired power plants have retired due to economics, more are expected

► Natural gas prices are low, expected to stay low

► Relatively low overall load growth across the U.S.

► Increasing amounts of renewable power, especially wind in the Midwest

► Wholesale electricity prices remain low

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Municipal Utility Trends

► Municipal utilities are retiring uneconomic generation • Mainly small-scale coal plants

► Membership in municipal joint action agencies provides economies of scale and additional reliability for small communities

► Low wholesale electricity prices support “relying on the market” for capacity

► Low load growth along with increases in energy efficiency reduce need for new on-system generation

► Municipal utilities are increasingly installing reciprocating engines as a source of new-build capacity in cooperation with renewable energy purchases

Historical Wholesale Energy Price

✓ $80

[ $70 :::!!: -~ ;$60 CJ

~ $50 IO .5 ~$40

:::!!:

~ $30 0 .. IO g $20

$0 <D I'-- 00 0) 0 ..... N (") s:::t LO <D I'-- 00 0 0 0 0 ..... ..... ..... ..... ..... ..... ..... ..... ..... 0 0 0 0 0 0 0 0 0 0 0 0 0 N N N N N N N N N N N N N

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Wholesale Energy Market Prices (2006-2018)

► Prior to 2009, market energy prices significantly higher than today

• Recession reduced demand

• Natural gas fracking lowered fuel price

• Increased energy efficiency

• Increased renewables

► Post 2009, market prices have been lower

► J.B. Sims Unit 3 is unprofitable at current market prices

Polar Vortex Average $48/MWh

Average $33/MWh

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Agenda

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Pillars of Utility Mission Statement

► Low cost energy

► Reliable energy

► Safe energy

► Environmentally compliant energy

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GHBLP Key Considerations

► Previous studies recommended the following actions: • Retire Sims Unit 3 on an economic basis

• Invest in transmission and distribution to prepare for increase reliance on market imports

• Most economical option for on-system generation is a small, quick-start natural gas resource such as reciprocating engines

► Community and policy drivers: • Maintain some form of on-system generation

• Move away from coal-fired generation

• Shift toward a more sustainable power supply and increase usage of renewable resources

• Continue operation of snowmelt system regardless of J.B. Sims retirement

Ideal power supply plan for Grand Haven balances

economics and community drivers

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GHBLP’s Obligations

► Provide sufficient capacity (MW) to meet demand • Based on NERC rules, MISO sets capacity requirement based on

GHBLP’s load forecast

• Capacity comes from units that GHBLP builds, contracts through bi-lateral agreement, or demand side management

• Capacity typically has to be dispatchable, renewables are intermittent and don’t provide significant capacity

► Provide sufficient energy (MWh) to meet customers’ needs • Electrical energy comes from units that GHBLP builds, contracts, net

metering, conservation, or MISO market

► Energy must be compliant with regulations • Renewable and solar mandates

• Environmental regulations

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- 60 ~ !. 50 ::, -~ 40 C.

"' o 30

4 21 21 20 20 20

- . . . .

a, 0 ~ N C") v 0 N N N N N

0 0 0 0 0 N N N N N N

- JBSims:3

- Beebe 1 B \Mnd Project

Path 1 - Sims Operational 19 19 18 17 17 6 6

I I ri

5 5 Capacity Surplus I (Deficit)

4 4 4 3 3

f'J ~ .. r. .. r. .. r. .. r ····· ·· ···· ···· ··· ··· ·· ···· -~ . .

Lt) <O r--- co a, 0 N C") v Lt) <O r--- co N N N N N C") C") C") C") C") C") C") C") C") 0 0 0 0 0 0 0 0 0 0 0 0 0 0 N N N N N N N N N N N N N N

- MPPA Landfill Gas Project MPPA Solar Project

- Pegasus Wind Project - CMS Energy Contract

Market Capacity Purchases

- System Peak •• • • System Peak+ Reserve

Balance of Loads & Resources (BLR)

► MISO requires utilities to maintain capacity reserves of 7.8% in excess of demand

► GHBLP must secure “firm” capacity to meet its demand plus reserve requirements

► Renewables do not get full credit due to intermittency (i.e. non-firm)

• Wind receives 15.6%

• Solar receives 50%

• Dependent on actual generation

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Agenda

S&L Integrated Resource Plan

B&V Natural Gas Generation Siting Study

2013 I

B& V Natural Gas Generation Siting

Study Supplement

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Board Approved Policy Statements

2015 l

Organization Check Up

I 2016

Key Policy Statements

GHBLP Strategic Plan

Sims Plant Closure Recommendation Report

MISO Report

I RP Considerations .....,_

Sims Internal Condition Assessment

Snowmelt Study

2017 2018,

Sims Staffing Report

B&V Sims Life Assessment Report

Power Supply Planning Efforts

GHBLP has completed numerous comprehensive studies over the past several years assessing its power supply plan.

2013 I

Study Supplement

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2015 l

I 2016

MISO Report

Sims Internal Condition Assessment

Snowmelt Study

2017 2018,

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Initial Planning Efforts

► Since 2012, GHBLP has been gathering information to address the need to replace aging power supply resources

► Sargent & Lundy (S&L) Integrated Resource Plan (April 2012) • Formulated a long-term plan to meet GHBLP’s future power supply

requirements

• Performed condition assessment and environmental compliance evaluation of J.B Sims Unit 3 and Diesel Plant

• Identified that Unit 3 and the diesel plant would retire in 2020

• Extensive evaluation of power supply options

Identified that Sims Unit 3 and the diesel plant

would retire in 2020

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S&L 2012 IRP Resource Options

► S&L evaluated the following resource options in the 2012 Integrated Resource Plan:

• Continued operation of J.B. Sims Unit 3 • Combined Cycle Gas Turbine • Nuclear Plant

Dual-unit, AP1000 Small Modular Reactor

• Circulating Fluidized Bed Boiler • Advanced pulverized coal

Single-unit and dual-unit options • Steam power plant

Dual-fueled coil and biomass boiler Biomass-fueled boiler Gas fired boiler

• Geothermal Dual Flash and binary

• Natural Gas Plants Aeroderivative combustion turbine Reciprocating internal combustion

engines

• Wind Farms Onshore Offshore

• Landfill gas • Solar thermal

With and without storage • Solar photovoltaic

Small-scale solar Large-scale solar

• Hydroelectric Conventional Pumped storage

• Compressed air energy storage

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Initial Planning Efforts Continued

► S&L 2012 IRP Conclusions • Recommended obtaining Network Integrated Transmission Service

(NITS) to increase wholesale market purchases

• Recommended retirement of Sims 3 and Diesel Unit 1 in 2020

• Most economic option would be combination of 80 percent power from market and quick start generation installed as self-build option

• Consider installation of a quick start generation facility or purchase a share in a natural gas facility

► Black & Veatch (B&V) Natural Gas Generation Siting Study (April 2013) • Recommended replacing Sims with a natural gas peaking plant placed

at the Sims site

• Supplemental study evaluated conversion of Unit 3 to natural gas, but determined that it was uneconomical

2013 I

Study Supplement

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2015 l

I 2016

MISO Report

Sims Internal ondition Assessment

Snowmelt Study

2017 2018,

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Continued Planning Efforts

► Key Policy Statement (October 2014) • GHBLP stated intention to reduce reliance on coal and transition to

alternative sources of fuel

► Key Policy Statement (August 2015) • Continue to evaluate alternative generation options to Sims

• Complete transmission and interconnection studies to prepare for increased reliance on wholesale imports

• Avoid “overbuilding” or market speculation to meet customer needs

► Organization Check Up (January 2016) • Determined Sims is no longer an economical power supply option

• Recommended capital transmission investments and network membership in MISO to prepare for Sims retirement

• Sims debt retirement provides GHBLP with additional capital for investment in transmission and distribution systems

• GHBLP has little power supply ownership diversification and therefore has higher risk than most utilities of similar size

2013 I

Study Supplement

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2015 l

I 2016

GHBLI Strategic Pia,

MISO Report -

Sims Internal _ Condition Assessment

Snowmelt Study

2017 2018,

Recent Planning Efforts

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Recent Planning Efforts

► IRP Considerations (February 2018) • Emphasized importance of supply diversification and future adaptability and

flexibility of GHBLP’s power supply

► MISO Transmission Report (February 2018) • Recommended GHBLP obtains NITS status to enhance reliability of supply

imports, as recommended in previous power supply studies

• Increased transmission and distribution capacity will increase reliability

► Sims Internal Condition Assessment (February 2018) • Conducted condition assessment as recommended in previous power

supply studies

• Results indicated that capital expenditures exceeded benefits of continued long-term operation of Unit 3

• Recommended avoiding any additional capital expenditures on Sims plant, reducing position in coal markets, prepare a staff succession plan, and working with MPPA to develop reduced run-time plan for Sims

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Recent Planning Efforts Continued

► Sims Staffing Report (March/June 2018) • Normal staffing level at Sims is 39 employees

• New power facility will need approximately 13 to 15 employees

• Staffing levels can be reduced through attrition with no terminations of steam plant employees

• Replacing Sims with smaller plant estimated to save $2.7M on labor expenses annually

► Sims Power Plant Closure Report (April 2018) • Determined Sims operation does not impact GHBLP customer reliability

• Sims cannot operate beyond 2020 in a safe, reliable, economic manner without substantial capital expenditure

• Ancillary benefits of Sims operation cannot be justified

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Recent Planning Efforts Continued

► B&V Sims Life Assessment Report (June 2018) • The assessment found that Unit 3 has reached the end of useful life

• Capital expenditures of $35M are required to keep Sims safe and reliable, but the costs exceed the benefits of long-term operation

• B&V recommended the retirement of Sims by June 2020 and to conduct production cost modeling to identify the most economical power supply portfolio to optimize internally owned generation options.

► City Council resolution stating local generation and snow melt system is important to the community

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Snowmelt System

► Current system is coupled to Sims plant using heat energy supplied from the boiler

► Two independent studies were performed to evaluate alternatives after Sims retirement • First study determined amount of heat and energy required to operate the

snowmelt system

• Second study determined what would be required to “decouple” the snowmelt system from Sims

► New system would likely require natural gas-fired heat generators and electric pumps • Costs are largely dependent on system location

Snowmelt should not be the driver in deciding power supply path for the electric customers

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Agenda

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Key Components of the Power Supply Plan

► Review of completed studies

► Combine previous studies into a singular plan

► Identify power supply options available to GHBLP

► Economic cost-benefit evaluation

Objective: Determine the “best” mix of resources that provides safe, reliable, environmentally compliant, low cost

capacity and energy to GHBLP’s customers.

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Power Supply Options

► Keep Sims 3 operational • Requires full staffing level and $35M in capital expenditure to maintain

safe and reliable operation

• While option is not economical, nor has it been recommended in previous studies, it was provided as a method of comparison

► Build replacement generation • Previous studies recommended quick start, natural gas plants as an

alternative to Sims located at Harbor Island.

• Burns & McDonnell agrees with previous study results indicating quick start generation would be the preferred replacement of Sims Unit 3.

► Purchase capacity from the market • NITS provides clear economic benefits of lower cost energy and

capacity

• Transmission and distribution upgrades in-progress enhance reliability

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Power Supply Paths

► Based on previous studies and technical evaluation, four power supply paths were determined and modeled for further evaluation:

• Path 1 - Business-as-usual with continued Sims operation

• Path 2 - Retire Sims and replace with 4x9 MW (36 MW total) reciprocating engines

• Path 3 - Retire Sims and replace with 6x9 MW (54 MW total) reciprocating engines

• Path 4 - Retire Sims and replace with market capacity

► All paths, specifically Paths 2, 3, and 4, include snow melt alternatives. Costs have been included for “decoupling” the snowmelt system from Sims and operational expenses associated with a new system.

► All paths interact with the wholesale energy market by selling and purchasing from MISO.

_60 3: ~50 ~ ~ 40 C. ca O 30

Path 1 - Sims Operational Capacity Surplus I (Deficit)

4 21 21 20 20 20 19 19 18 17 17 6 6 5 5 4 4 4 3 3

0) ..... 0 N

0 ..- N N N N 0 0 0 N N N

- JBSims:3

('I') v N N 0 0 N N

- Beebe 1 B Wind Project

-system Peak

LO N 0 N

<O r--N N 0 0 N N

00 0) N N 0 0 N N

0 ..... ('I') ('I') 0 0 N N

N ('I') 0 N

('I') v ('I') ('I') 0 0 N N

LO ('I') 0 N

• • • • System Peak + Reserve

<O r--('I') ('I') 0 0 N N

00 ('I') 0 N

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Path 1 BLR - Continue to Operate Sims

_60 3: ~50 ~ ~ 40 C. ca O 30

0 0) ..-0 N

Path 4 - MISO Market Capacity Surplus I (Deficit)

(49) (49) (49) (49) (50) (50) (51) (51) (53) (53) (63) (63) (64) (65) (65) (65) (66) (66) (66)

•••••••••••••••••••••••••••••••••••••••••••••• •••••••

0 ..- N ('I') v LO <O r-- 00 0) 0 ..- N ('I') v LO <O r-- 00 N N N N N N N N N N ('I') ('I') ('I') ('I') ('I') ('I') ('I') ('I') ('I') 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 N N N N N N N N N N N N N N N N N N N

- JBSims:3 - MPPA Landfill Gas Project MPPA Solar Project

- Beebe 1 B Wind Project - Pegasus Wind Project - CMS Energy Contract

-system Peak

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Path 4 – Retire Sims Unit 3

_60 3: ~50 ~ -~ 40 C. ca O 30

Path 4 - MISO Market Capacity Surplus I (Deficit)

(49) (49) (49) (49) (50) (50) (51) (51) (53) (53) (63) (63) (64) (65) (65) (65) (66) (66) (66)

••••••••••••••••••••••••••••••••••••••••••••••

0) 0 ,.- N ('I') v LO <O I'- 00 0) 0 ,.- N ('I') v LO <O I'- 00 ,.- N N N N N N N N N N ('I') ('I') ('I') ('I') ('I') ('I') ('I') ('I') ('I') 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 N N N N N N N N N N N N N N N N N N N N

-system Peak • • • • System Peak + Reserve

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Path 4 – Retire Sim & Build Nothing

_60 3: ~50 ~ -~ 40 C. ca O 30

Path 2 - 4x9 MW RICE Plant Capacity Surplus I (Deficit)

(49) (49) (49) (15) (15) (16) (16) (17) (18) (19) (29) (29) (30) (30) (31) (31) (31) (32) (32) 4

••••••••••••••••••••••••••••••••••••••••••••••

0) 0 ,.- N ('I') -.:t- LO <O r-- 00 0) 0 ,.- N ('I') -.:t- LO <O r-- 00 ,.- N N N N N N N N N N ('I') ('I') ('I') ('I') ('I') ('I') ('I') ('I') ('I') 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 N N N N N N N N N N N N N N N N N N N N

- 4x9 MW RICE Engines Market Capacity Purchases

-system Peak • • • • System Peak + Reserve

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Path 2 BLR – Retire Sims & Build 36 MW of Recips

Path 3 - 6x9 MW RICE Plant Capacity Surplus I (Deficit)

(0) (1) (1) (12) (12) (13) (13) (14) (14) (14) (15) (15) 90

_60 3: ~50 ~ -~ 40 C. ca O 30

4 (49) (49) (49) 2 2

0) ..... 0 N

••••••••

0 ..- N N N N 0 0 0 N N N

- JBSims:3

('I') 'st" N N 0 0 N N

- Beebe 1 B Wind Project

- 6x9 MW RICE Engines

-system Peak

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............ ~-. ~-. ~-. ~-. ~-. ~-. ~-. :....:_·

LO N 0 N

<O r-- 00 0) N N N N 0 0 0 0 N N N N

0 ..... ('I') ('I') 0 0 N N

N ('I') 0 N

('I') 'st" ('I') ('I') 0 0 N N

LO ('I') 0 N

<O r--("I') ('I') 0 0 N N

00 ('I') 0 N

Path 3 BLR – Retire Sims & Build 54 MW of Recips

_so ~ ::E -"C

~ 40 ...J u

·.:::: -u .!! 30 w >,

.:::: :::, 0

:I: 20

GHBLP 2017 Hourly Load Profile

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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GHBLP Hourly Load Profile GHBLP must have

enough capacity to meet peak demand.

But a majority of the energy need is much lower.

~ :E: -40 "C

C'l:I 0

...J (J "i: 30 0 Q)

2017 Load Duration Curve

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% Percent of Time Above Load (%)

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GHBLP Load Duration Curve

Sims Unit 3 is 70 MW.

It is too big for GHBLP load requirements.

"C 70% 0

.c: (/)

~ 60% .c: t-

~ 50% 0 .c <t ~ 40% (1)

> ~30% (1)

E i= 20% -0

?fl.10%

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Distribution of Historical Grand Haven Electric Demand

• 2011 • 2012 • 2013 • 2014 • 2015 • 2016 • 2017 1

II 111 111 ■I■ . .. -· >30 >35 >40 >45 >50

Electrical Demand (MW)

-•· >55

--- -->60

Distribution of GHBLP Electrical Demand

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Agenda

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Economic Evaluation

► Objective: Assess the cost-benefits of individual resources to determine how GHBLP’s overall power supply portfolio can meet customers’ needs both short-term and long-term

► Utilize costs for resources as described previously

► Develop forecasts for fuel and market energy prices

► Economic evaluation includes: • Fixed expenses

• Variable expenses

• Fuel costs

• Debt service expenses

• Credit for market revenue

• Snowmelt system costs

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Economic Evaluation – Methodology

► Utilized pre-screed alternatives and existing resources to determine optimized portfolio

► Sophisticated software that simulates power generation resources’ interaction with the MISO market over a 20-year horizon • Software dispatches resources every hour of the year

► Forecasts an “all-in” cost to GHBLP for serving customer’s needs over the 20-year horizon

► Sensitivities evaluate portfolios across different natural gas and market capacity price forecasts

Flexible Dispatch Provides Value in the Market

Energy Price = Fuel + Variable Costs

Sims Energy Cost

Coal units are not flexible. Sims energy cost is more expensive than the market. It is difficult to turn off the unit. Does not include fixed or capital costs

Recip Energy Cost

Recip engines are extremely flexible. If prices are low, they turn off. If prices are high, they dispatch and “cherry pick.”

Average Daily Wholesale Energy Price in 2017 $70

$60 -.c: 3: ~ $50 ~ -Q) 0

~ $40 >, C) ... Q)

ifi $30 Q)

cu ~ $20 0 .c: 3:

$0 r--.....

C co ...,

r-- r-- r--..... ..... ..... I I I

.0 .... .... Q) co CL

LL ~ <(

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r-- r-- r-- r-- r-- r--..... ..... ..... ..... ..... ..... I I I I I I >, C 0) CL

_. co :::::, :::::,

:::::, Q) (.)

~ ..., ...,

<( (f) 0

r-- r--..... ..... I I

> (.) 0 Q)

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Financial Assumptions

► 20-year planning horizon: 2019 through 2038

► Interest rate: 4%

► Financing term: 20 years

► General inflation: 2.5%

► Discount rate: 4%

► Demolition costs have been included

► Snowmelt costs included in all paths

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Numerous Scenarios Considered

► Sensitivity analysis was completed as part of the economic evaluation

• Aimed to evaluate the robustness of power supply paths across uncertain variables

► Sensitivities on natural gas price and market capacity price

► Four scenarios were considered within the economic evaluation

• Low Natural Gas & Low Capacity

• Low Natural Gas & High Capacity

• High Natural Gas & Low Capacity

• High Natural Gas & High Capacity

Low High

Capacity Price

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Economic Evaluation – Portfolio Analysis Results

Grand Haven Board of Light & Power Power Supply Path

Path 1

J.B. Sims Unit 3

Path 2

4x 9 MW Recips

Path 3

6x 9 MW Recips

Path 4

MISO Market

2020 Retire J.B. Sims Retire J.B. Sims Retire J.B. Sims 2021

2022 2023 36 MW Recips 54 MW Recips

2024 2025

2026 2027

2028 2029

2030 2031

2032 2033

2035 2036

2037 2038

Low Gas/High Capacity $450,121,714 $407,701,944 $406,609,640 $386,185,943

Delta $ $63,935,770 $21,516,000 $20,423,697 $0

Delta % 16.6% 5.6% 5.3% 0.0%

Low Gas/Low Capacity $453,384,057 $388,717,345 $395,052,209 $352,347,011

Delta $ $101,037,046 $36,370,335 $42,705,198 $0 Delta % 28.7% 10.3% 12.1% 0.0%

High Gas/High Capacity $443,735,429 $440,092,581 $438,938,872 $418,780,959

Delta $ $24,954,470 $21,311,622 $20,157,913 $0 Delta % 6.0% 5.1% 4.8% 0.0%

High Gas/Low Capacity $446,997,772 $421,107,982 $427,381,441 $384,942,027

Delta $ $62,055,746 $36,165,956 $42,439,415 $0

Delta % 16.1% 9.4% 11.0% 0.0%

(/) $500

' ' $450

'" J ; ! - -~ C0 II .... 0 N $400 ' I ·, -C1' • ■ ::::, ii ~ - ■ ) C:

\ I C1' Ill $350 C1' '-::,/ lo. ll. -C1' z

$250 Path 1 Path 2 Path 3 Path 4

J.B. Sims Unit 3 4x 9 MW Recips 6x 9 MW Recips MISO Market ■ Low Gas/Low Capacity $453,384,057 $388,717,345 $395,052,209 $352,347,011

Low Gas/High Capacity $450,121 ,714 $407,701 ,944 $406,609,640 $386,185,943

■ High Gas/Low Capacity $446,997,772 $421 ,107,982 $427,381,441 $384,942,027

■ High Gas/High Capacity $443,735,429 $440,092,581 $438,938,872 $418,780,959

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Economic Evaluation – Net Present Value Results

Sims locks in high costs

Provides opportunity to lower costs, and provides local resource.

Opportunity for lower costs, but lacks local resource

How large should the local resource be?

"C 70% 0

.c: (/)

~ 60% .c: t-

~ 50% 0 .c <t ~ 40% (1)

> ~30% (1)

E i= 20% -0

?fl.10%

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Distribution of Historical Grand Haven Electric Demand

• 2011 • 2012 • 2013 • 2014 • 2015 • 2016 • 2017 1

II >30 >35

--- -->60

Why Not Replace All of Sims with a Large Plant?

Building smaller enhances flexibility, allows for future expansion,

covers approximately 50% of load

Very rarely is load above 50MW. Building too big reduces long-term flexibility.

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Agenda

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Conclusions

► Continued operation of Sims provides the most expensive power supply path with the least amount of flexibility.

• Burns & McDonnell does not recommend this option, which is consistent with both Sargent & Lundy’s and Black & Veatch’s previous results and recommendations as well.

• Burns & McDonnell agrees with the Board’s decision to cease operations in June 2020

► Relying only on market capacity and energy provides the lowest cost option in all scenarios

• While this is the lowest cost option, it does expose GHBLP to potential rising prices in energy and capacity

• This is a viable path for GHBLP

► New on-system generation provides lower cost than continued operation of Sims, but higher cost than relying only on the market

• This is a higher cost option than relying solely on the market based on current forecasts for both energy and capacity

• This is a viable path for GHBLP

► Either of the viable paths provides flexibility to allow for the use of emerging technologies such as local solar and energy storage

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Conclusions & Recommendations

► Based on the combination of economics, public feedback to date, and Board & Council policy statements, Burns & McDonnell concludes the following: • Ongoing operation of Sims Unit 3 is higher cost than other options; Sims

Unit 3 should be retired by June 2020.

• The installation of a 35 to 40 MW reciprocating engine plant on Harbor Island will provide a local generation resource while allowing increased flexibility and should be pursued.

• GHBLP should meet additional capacity requirements through market purchases or agreements.

• This path provides GHBLP enhanced flexibility to be both proactive and reactive to changes within the power industry regarding advances in technology and power prices.

• If market conditions change in the future, additional generating units can be added to the Harbor Island plant while avoiding the risk of overbuilding today.

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Action Plan

1. Address public input/feedback and present to the Board for review. 2. Finalize the power supply plan report 3. Move from planning to engineering phase

a. Conduct a Project Definition Report (PDR) for the new plant: includes demolition plan of existing site, preliminary engineering, site layout, cost estimates, interconnection studies, permitting, execution schedules

b. Engineer replacement for snow melt system both during the transition and permanently

c. The PDR will be needed to meet the requirements of the City Council’s Resolution passed on September 4, 2018.

d. Develop remediation plans for Sims facility and coordinate with PDR execution schedules.

4. Secure short-term capacity and energy during the transition from Sims Unit 3 to the new plant

5. Begin building a long-term diversified portfolio, through the joint action agency, that will complement and supplement the new generating facility on Harbor Island that offers cost competitive power supply for electric customers.

BURNS~M~DONNELL"

Opportunity for Feedback

► Open the floor to the public for questions and feedback.

► Each speaker needs to provide their name and address for the record.

► Each speaker will be limited to approximately 3 minutes to provide ample time for everyone to have the opportunity to speak or ask questions.

► Questions will either be addressed 1) verbally during the meeting or 2) with written responses within the final report.

Presentation of the Power Supply Plan - Grand Haven Board ......Supply Portfolio Paths Economic...

Documents

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