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
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Green Collar Sponsors


Green Collar Careers - Demand and Supply

Demand and supply are the lowest branches on the trunk of Green Collar Jobs.  Where supply focuses on renewable energy systems, demand focuses on energy conservation technology.


Demand is all about managing energy conservation and often doesn't require a reduction of comfort.  In many cases conservation methods can actually increase comfort.

Using home economics as a reference point consider the appliances and lighting fixtures in your home that consume power.  If your lamps are using standard incandescent bulbs designed over a century ago, it would stand to reason there may be a more efficient solution to lighting.  About 15% of the energy consumed by an incandescent is turned into light, the rest into heat. 

On a hot summer evening if you're burning 1000 watts to power incandescent bulbs, you're also burning another 1500 watts to cool your home just from the heat produced by the lights - a total of 2500 watts.  Replace all those incandescent lights with Compact Florescent Lights and the total consumption (light and heat) drops to 450 watts.  At 12 a kilowatt, 4 hours a day, 30 days a month that amounts to a savings of $14.40 a month in electricity.

While this is only one example, you can imagine how quickly this would multiply when applied to commercial and industrial applications.  In large scale applications such as international airports, million dollar a year electric bill reductions have been achieved from lighting system upgrades alone.

Lighting accounts for less then 10% of the power consumed in the average residence giving many other options for improvements with other appliances.  In many cases its not a matter of replacing the appliance as it is servicing.  The same is true for commercial and industrial consumers.

Module 200 Demand Management provides a comprehensive lesson for the most practical conservation initiatives.


Most people associate Green Energy with the supply side of renewable energy generation systems.  To size a reasonable renewable energy system takes much more the looking at the consumer's past electric bills to determine a kilowatt-hour number.  It is essential to first understand the demand and reduce that demand without compromising the customer's comfort and quality of life.  It is also important to estimate the likelihood of future demand growth such as a growing family.

Choosing a system that best fits the needs of the customer is crucial.  All of the energy demand objects need to be taken into account;  Solar water heating may be an option if the customer does not have a natural gas pipeline.  On the other hand with the current and foreseeable cost of natural gas a solar hot water system doesn't make economic sense.

The supply side technology is the most complex with 5 separate modules dedicated to the training you'll need to understand and effectively design a system for installation.