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.