Hydro Resource Analysis

This webpage explains how to evaluate the capacity factor and the production from hydro plants. The resource can be computed from the electricity power equation that multiplies the water flow by the head by the gravity constant and by the efficiency.

As with the solar and wind pages, the hydro page begins with hydro resource analysis. Hydro projects can have higher volatility than other projects, but the flows experience mean reversion. Hydro projects also have longer lives than other projects meaning that re-financing can be an important issue. In the resource analysis on this page you are guided through a hypothetical run of the river plant that applies flow rate data. You apply the hydro power data where kW produced is a function of the flow rate, the head, the gravity coefficient and the efficiency of the plant. After working through the resource analysis, a financial exercise is included that demonstrates the importance of re-financing and measuring the cost of capital. In addition there is a discussion of simulating storage hydro for systems that have reservoirs.

Hydro Resource Analysis

Power (kW)=Flow Rate (m/s) x Head (m) x Gravitational Constant (9.8 m/sec^2) x Efficiency

 

 

 

 

The first step in the lesson set is evaluating solar resource. The files first set of files involve putting solar data together in a file. The basis for computing P99 etc is the NREL website and download the zipped file for a location (sorry that this is only U.S. data). The first set are files work with detailed raw data from NREL that has hourly data from 1991-2010. If you try this, go to a file and then run the

 

These files are on the resource library. Get the library by e-mailing edwardbodmer@gmail.com

 

Hydro Analysis

Videos associated with Lesson Set 1: Hydro Resource Analysis

Subject Excel File Video Link Chapter Reference Page Reference
Finding Water Flow Data Hydro Water Flow
Computing Hydro Generation from Water Flow USGS Data base
Computing P90, P75, P50 etc. from Water Flow P90, P95, etc.
Using EIA 923 to Study Hydro Variation Net Yield Analysis
Peak Shaving for Storage Hydro Peak Shaving Exercise
Timing in Hydro Project Finance Model Timing in Hydro Model
Operating Analysis in Hydro Model Hydro Operations Analysis
Working Capital In Hydro Model Hydro Working Capital
Financial Related Inputs and Financial Model Structure Hydro Financing Inputs
Re-Financing in Hydro Model Hydro Financing Inputs
Financing Equations Hydro Financing Equations
Cash Flow Equations Hydro Cash Flow Equations
Presentation of Annual Data and Debt Cash Flow
Preparing Balance Sheet and Audit Checks
Scenario Analysis
Tornado Analysis
Working with EIA 923 Data Base
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