Green Collar Job Training - Free


Course Title
100 Home
101 Introduction
102 FAQ Page
103 Course Catalog
104 Green World
105 Demand & Supply
106 Conservation Careers
107 Solar Careers
108 Wind Turbine Careers
109 Entrepreneurs
110 Employee or Employer?
200 Demand Management
201 Summary
202 Residential Energy Profile
203 Ten Conservation Rules
204 HVAC System
205 Kitchen Appliances
206 Water Heater
207 Lighting
208 Laundry Appliances
209 Calculating Savings
300 Renewable Technology
301 Solar Energy
302 Solar Collectors
303 Solar Water Heating
304 Stirling Engines
305 Basic AC-DC Electronics
306 Silicon Solar Panels
307 Thin Film Solar Panels
308 Wind Turbines
309 Inverters
310 Grid Tied and Off Grid
311 Solar Site Survey
312 Solar Site Diagram
313 Sun Path Chart
314 Site Survey Worksheet
315 Wind Turbine Site Survey
316 Wind Turbine Worksheet
400 Solar Thermal Design
401 Solar Heat Overview
402 System Configuration
403 Site Survey
404 SRCC Compliance
405 System Specification
406 Bill of Materials
407 System Installation
408 Solar Heat Incentives
409 Document Package
410 Future Products
500 Solar PV Design
501 Solar PV Overview
502 System Configuration
503 Site Survey
504 Grid Tied & Off Grid
505 System Specification
506 Bill of Materials
507 System Installation
508 Solar PV Incentives
509 Document Package
510 Future Products
600 Wind Turbine Design
601 Wind Turbine Overview
602 System Configuration
603 Site Survey
604 Grid Tied and Off Grid
605 System Specification
Green Collar Links
Green Collar Sponsors


Green Collar Careers - Management Summary

You don't have to be an electrical engineer to understand the basic concepts of how electricity is measured and sold.  Just like a butcher sells meat, there is a price per unit multiplied by the number of units to get the total price.

Electricity is sold by the Kilo Watt Hour, or kWh unit.  Burn 1000 watts for an hour and that equals 1 kWh.  Sounds simple, but lets examine what really is a watt of electricity?

  1. 1 Watt = 1 Volt * 1 Ampere
  2. Volts are the measurement of electrical pressure like the water pressure in a pipe.  The more pressure, the more water will be forced to flow, the thicker the pipe or insulation walls need to be to contain that pressure.
  3. Amperes (or Amps) are the volume of flow.  On a water pipe we could measure this as gallons per minute - more pressure could increase or decrease that flow just as the size of the pipe (resistance) could change the flow rate.
  4. Watts are the total of the Voltage Pressure and Amperage Current Flow. 
  5. While water may be sold by the volume (gallons or cubic feet), electricity is sold by the total energy unit of Watts x Hours.  The total energy of 1 Watt Hour is pretty small, like selling water by the ounce so its multiplied by a 1000 to get Kilo Watt Hours or kWh.
  6. To give a relative idea of how much a power a watt has, it takes 746 watts to generate 1 Horsepower.  On a car that would relate to miles per gallon, but to get the amount of gasoline consumed we need to know how many miles were traveled.  Likewise with electricity we need to know how many hours we consumed electricity at the rate per hour to get our monthly power bill.

Driving down the road we feel the acceleration.  We are cognizant of the speed we travel.  Despite seeing the light come on, opening a refrigerator no one thinks about the power it takes to run, in fact about the only thing 99% of the consumers pay any attention to are the lights - because they see them.  Lights account for less then 10% of the average power bill, so if the average homeowner can reduce the usage of lights by 10% they get a net improvement of less then 1% of their power bill.  Hardly a point to focus on, but yes, every little bit adds up.

The Demand Management module identifies both the visible and invisible savings found in any residence.  We will focus on residential construction, new and old, and explore commercial and industrial applications.

Residential Energy Profiles provide an overall average of consumption broken down into simple subgroups. 

There are an almost endless number of energy conservation methods and devices on the market.  Focusing on the top ten methods will achieve 80-90% of the possible reduction for the existing home power bill without requiring a sizable investment.

Included in the module are the five major appliance groups where power reductions can be attained with a loss of comfort.  Each has a predictable reduction rate that can be totaled up for the potential monthly/annual savings to the customer by selecting the applied actions.  This includes a downloadable spreadsheet developed just for this purpose.

By keeping a Home Energy Audit simple and effective it becomes a valuable service that nearly every homeowner needs.  Included are factors for selecting the market of customers with the largest potential value.

A typical 2 hour inspection and 1/2 hour consultation applied to 10% of the average American homes can easily result in an energy savings of over $850 a year!  Typical prices for a Home Energy Audit are about $150-$200.