Carter Lake Hydroelectric Project

Presented to CREA Energy SummitBy Carl Brouwer

October 2011

Carter Lake Outlet Bypass Addition

Capacity: 250 cfsCompleted 2008Cost: $12M

Project Layout

Project Particulars

2 -1,300 KW Francis Turbines480 volt generators and controls85 foot x 38 foot Powerhouse2oo feet of 72-inch PenstockConnection to St. Vrain CanalConnection to PVREA

Project Sizing

0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 10

100

200

300

400

500

Time Flow Exceeded

Flo

w (

cfs

)

0 50 100

150

200

250

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450

0

2000

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Design Flow Rate (cfs)

MW

hrs

Station Layout

Layout Drawing

Outside View

USBR Lease of Power PrivilegeInitiate LOPP

Process USBR Advertises

in Fed. Register Prepare

Proposal USBR Proposa

l Review

Preliminary LOPP

Final LOPP

1 Month

2 Months

6 Months

2 Months

1 Months

3 Months

•Replaces FERC on USBR Facilities•Requires EA•Approx. 1 – 1.5 Years•Approx. $5/MWhr•40 Year Term

Project CostsCOST ITEM AMOUNTTurbines/Generators/Controls

$3,500,000

Site Construction $1,800,000

Transformer/Switchgear $130,000

PVREA Costs $140,000

Engineering/CM/Administration

$630,000

TOTAL $6,200,000**Does not include permitting, feasibility, pre-design, and turbine design of $500k

Project EconomicsPresent Value of Costs: $8,300,000Present Value of Revenue:

$13,400,000Net Present Value of Project:

$5,100,000Benefit/Cost Ratio: 1.6

Financing$2,000,000: 2%, 20-Year-Colorado

Water Resources and Power Development Authority

$4,700,000: 2%, 20-Year, Internal Loan from Northern Water to New Hydropower Enterprise

Loan Repayment Based Upon Revenue-Only

Includes 1-Year Debt Service in Reserve (Rainy Day Fund)

Future Cash Flow

2012

2014

2016

2018

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USBR LOPP

O&M

NW Loan

CWRPDA Loan

Revenue$1

00

K