North Carolina Utilities Commission Public Staff Christopher J. Ayers Executive Director
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Executive Director 1 Disclaimer This ratemaking presentation - - PowerPoint PPT Presentation
North Carolina Utilities Commission Public Staff Christopher J. Ayers Executive Director 1 Disclaimer This ratemaking presentation provides a high level overview of the general ratemaking process for regulated utilities in North Carolina.
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This ratemaking presentation provides a high level overview of the general ratemaking process for regulated utilities in North
discussed herein may not always predict the outcome of any particular issue coming before the NCUC. The purpose of this presentation is to provide the audience with a better understanding of the framework within which decisions are made and the issues that regulators must weigh when reaching those decisions and should not be construed as offering
future case. Many of the graphs contained herein are fictional examples for illustrative purpose only and should not be cited or relied upon.
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transportation
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as requested
well as counties and municipalities on regulated utility matters
before the NCUC
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communicate with NCUC on pending matters
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defined in Chapter 62 of North Carolina General Statutes
compensation
utility
affected with the public interest
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spending decisions are evaluated
ratemaking principles
regulators are less likely to allow recovery through rates
“Can we recover it through rates?”
“Does it benefit ratepayers?” “Is it least cost?”
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monopoly within its service territory, the utility commits to supply the full quantities demanded by customers at a regulated price
territory
service
includes a reasonable rate of return
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the utility must:
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2015 between 7:00 am and 8:00 am
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1) Utility files rate case application, exhibits, testimony and proposed rates 2) NCUC suspends rates and schedules customer and evidentiary hearings 3) Public Staff engages in discovery, audits/investigates, files testimony 4) Intervenors engage in discovery and file testimony 5) Settlement discussions may occur between parties 6) Customer and evidentiary hearings 7) Parties file proposed orders 8) NCUC reviews all evidence and issues order 9) Utility puts new rates into effect
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recurring or non-representative costs
utility has already spent
advance or after the fact
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rates in a manner to result in the least cost mix of generation and demand side reduction measures which is achievable…”
regulatory compliance
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(grossed up for income taxes)) + Expenses
utility may earn a rate of return.
distribution lines, etc. actually used in providing service to customers
including debt and equity investments.
an historical test year.
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public utility is authorized to earn its rate of return
Original cost of the utility assets (prudent capital investment) (minus) Accumulated depreciation expense 22
plant would be folded into the original cost of the assets when calculating rate base
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expense established in the test year
cost to avoid double recovery
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compared to equity
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bear the risk
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businesses
investment/expenses
predictable demand
fungible
equity
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must be balanced appropriately
result in higher rates
purposes
could establish rates by applying a 50% equity and 50% debt ratio to the rate base. This would result in lower rates for customers when compared to the actual capitalization ratio. 32
$3,000,000,000 * 10.97% = $329,100,000
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Type of Capital Capital Structure Ratio % Cost Rate % Weighted Cost % Income Tax Gross- Up Pre-Tax ROR % Equity 55.00% 10.00% 5.50% 1.67 9.17% Debt 45.00% 4.00% 1.80% 1.00 1.80% Total 100.00% 7.30% 10.97%
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estimated life
is no depreciation expense in the test year
return
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Coal generating plant: 60 years Natural gas combined cycle: 40 years Transmission facilities: 60 years Distribution facilities: 40 years AMI meters: 15 years Computers: 5 years
expenses incurred during the test year
between filing and hearing
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incurred to serve those classes
kWh basis
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electric service to customer-specific locations
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coincident peak
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Source: Energy Information Administration (Dec 2015)
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cost of the system
incurs to serve them
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kilowatt-hour charge
hours each year
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500 1000 1500 2000 2500
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
MWs Hour of the Day
System Load at Peak Residential Load Commercial Load Industrial Load
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100 200 300 400 500 600 700 800 900
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
MWs Hour of the Day
System Load at Peak Customer X Load at Peak Customer Y Load at Peak
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500 1000 1500 2000 2500
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
MWs Hour of the Day
System Load at Peak Residential Load Commercial Load Industrial Load Utility Generation Capacity
plant is in service
complete
as CWIP in a general rate case before the project is complete
retirement/abandoned plant decision is deemed reasonable and prudent
amount recovered
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be expensed as an asset (called a regulatory asset)
impact on the utility’s earnings and overall financial condition absent the deferral
regulatory asset
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Standard (bundled costs minus avoided costs)
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invested capital
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measure?
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cumulatively met the cost-effectiveness tests
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purchase of generation assets from the North Carolina Eastern Municipal Power Agency in 2015
changes in the fuel cost
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energy source is renewable resources
another useful form of thermal energy
generated by QFs
requested by a QFs
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the next kilowatt or kilowatt-hour of electricity
another source rather than incurring the cost to produce the electricity itself
than every two years
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peaking unit
the unit is producing electricity
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Avoided Energy Cost payment
Off-peak [$0]= 3,000kW * 4,176 hrs * .00 * .0371 On-peak [$276,369]= 3,000kW * 4,608 hrs * .42 * .0476
Avoided Capacity Cost payment
On-Peak Energy per On-Peak Month [$82,833]= 3,000kW * 3,072 hrs * .42 * .0214 On-Peak Energy per Off-Peak Month[$18,551]= 3,000kW * 1,376 hrs * .42 * .0107
Total annual avoided cost payment = $377,753
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Efficiency Programs
Standards compliance
energy/capacity?
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financing costs, to date
REPS Rider
with RECs
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shareholders
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