Load controllers save money on
your Arizona Public Service company bill. Combined Advantage
Rate. Load controller, load controller, Inergy system, System 3000,
Smart Panel, Smart Panel 300, Home Depot, LED lighting, solar systems, and more solar systems,
Phoenix solar company, PV solar, demand
reduction. How about lower energy bills
comfortllers, Pensar, Load Commander, APS, combined advantage
rate, time advantage rate, demand, dencor, Arizona Public Service
Company, Salt River Project, energy conservation
Residential Load Controllers
Frequently Asked Questions
Back to main page
Let there be no
Automated Power Systems is in no
way related to, sponsored, endorsed by or affiliated with Arizona
Public Service Company aka: APS, an Arizona based electric utility
Easy way to remember: They sell power, we help you conserve it.
What is a load controller?
A load controller is an outdoor mounted computer that measures your
usage and controls peak demand by load shedding. Loads (A/C,
Dryer, Water Heater), are not allowed to run at the same time which
causes high demand charges.
Load controllers work in conjunction with electrical rates
that have a
demand charge. Since the demand charge on most energy bills can
be as much as the consumption, controlling demand significantly reduces
your electric bill. Think of it as a cruise control for your power
bill. You set it where you want it. The lower you set it,
the more you save.
What is Demand?
Demand is the highest usage of electrical power during a given period. For Arizona Public Service residential
users, this time period is one hour. Salt River Project has a demand window of 30
minutes. You are charged for the highest average demand reached during the on peak
time period. Demand is measured in time and in amount. The typical
measurement used 1000 watts or 1KW averaged
given time period.
current charge for APS is
$13.50 per KW. Simple math dictates a demand of 10KW would equate to
$138.50 for one hour usage of power! Cutting this in half (easy to
accomplish with a load controller), would reduce your bill by almost $60 per
Demand rates are expected to rise to $16/kW
making this investment pay off even faster.
The SRP demand rate
schedule once you hit 10kW is $35/kW for the highest 30 minute period.
10kW x $35 is $350 just in demand charges. This does not include how
much power you used. One can see the benefits of not reaching the 10kW
demand peak and with this system not only do you never have to worry about, you
can tweek it at work on your laptop
during lunch. Make sure the kids don't
have the Jacuuzi on during on peak hours!
Examples of KW loads in a residence:
Clothes Dryer: 6KW
Water Heater: 4.5KW
Ton Heat Pump:
5.6KW (1.6 KW/ton)
8KW (15 year old heat pump: 11KW)
2.5KW per burner
pump (per pump)
the meter measures an average of
power usage, adding the KW values above would not be how the meter
reads your usage. Example: Let's say a 5 ton heat pump consuming
8KW runs 10 minutes on, 10 minutes off. The average demand that the meter (and the load
controller), "sees and reads" is a 4KW load. A water
heater uses 4.5KW but can run for a full 60 minutes (the APS demand time
window), after a load of clothes and therefore would contribute 4.5KW
to the months bill. The Inergy Smart Panel System has built-in timers and one
can be set to keep the water heater from running during on peak
What Does a Load Controller
On most all electric homes, the load controller
is connected to the heat pump(s), the clothes dryer heating element (so
the tumbler keeps spinning), and the electric hot water heater.
Years of experience has shown that pools should run at night during
off peak periods and ranges/ovens do not need to be connected.
Since the microprocessor in the load controller is aware of all loads
being used, (not just the ones connected to it), when the demand needs
to be controlled the load controller will shed loads to allow the use
of the range or oven. If set correctly and programmed
you won't even know the load controller is working until you open
your energy bill
each month and see the reductions.
I Have Natural Gas, Can a Load
Absolutely. Your savings
won't be as high as an all electric home but you will be able to lower your
demand more because of less appliances using 220v to operate. Lower
demands means lower bills. The recently introduced APS rate is one of the
lowest in the country and compatible with our load controllers. We know, we have
been doing this since 1981.
How much does a load
How many options do you
want? How many loads are being controlled? How many WIFI
integrated thermostats would like installed? How many appliance sensors
would you like to monitor?
We find once you are made aware the options
you choose how the system is ordered and the price reflects a custom
designed system. Our trained field techs can help you make these
controller doesn't "cost", it pays. You will be provided with an
accurate quote at the time of the site survey. Click here
to email us your
How long does it take to install?
The average installation time is two hours. Less on smaller
homes, a bit longer on larger homes
Do Load Controllers Need To Be
installed it is very rare to have a problem with them and they do not require
maintenance or check ups.
How do I know
what's going on? How do I control it?
The data logged by the system is
cloud based meaning it's always there to look at. There are menus to
choose from once the dashboard is accessed to view set points, usage
and "see" your power being used in real time.
Like most new technology there is a learning curve which does take time. The excitement to learn more comes when you see the effect it has
on your power bill every month.
Current transformers are placed
around the main buss bars in your electrical panel and measure power
consumption. This information is read and recorded by the
Every light bulb, appliance and outlet is recorded
and archived in a cloud based system.
Current sensors are also placed on loads and can then
be tracked, archived and graphed.
Being able see the
load use on a graph which is stored on a cloud based system
then has the ability to do predictive maintenance on HVAC
equipment. Should one of
the units take longer than typical
to reach a target temperature, you will be alerted that
attention is needed.
A sample graph showing demand, run
times of loads as well as solar energy being generated.
Sensors feed data into the relay panel (on the
right) and the loads to be controlled are fed into high quality
box is mounted outside on the right side of the main service panel and acquires
it to a
cloud based storage system so it can be viewed from any location with net
Moving the cursor over the interactive graph shows
details in a pop up window, in this case the highest demand during that billing cycle
was 17.465kW. Clicking on the graph
expands it for more
a Load Controller Help Me?
Marrzella in Scottsdale has a
four bedroom ranch with a pool and has saved $16,000 in twelve years on her APS
bill. Although this figure is on the high end of most of our customers,
you can expect significant savings and 24/7 protection again a runaway demand
charge. Remember, it's the highest usage recorded in a 30 (SRP) or 60
(APS) minuted time window. R
est assured knowing
the system will not allow demand levels to go over where
you set it at.
have control of the load controller, you set where you want it to be.
does a Load Controller look like?
Below is the Pensar
System 1000 (outdoor display)
This unit is mounted
next to your existing electrical breaker box
This is the relay box
which is mounted outside and houses the control module. There are modes on the display
which shows your demand set point (where you set the maximum demand
level), current demand (what the home is currently using), past hourly
average (this is what the APS meter measures from), highest demand peak
(what the highest peak reached was during last billing cycle), time,
date and alarm settings.
Typically you would interface with this display to set the
demand where it best fits your lifestyle. It may take a full year to
know just how low you can set it as the seasons and demand levels change and we
encourage our customers to check it more often than not during the first
year. Demand adjustments should reflect the load on the home, for
example: one setting to accommodate the summer load, a lower setting for
Fall and Spring, and one setting to insure your home is warm during the
winter. Key point to remember: the lower you set the demand level, the
lower your demand charge.
What's The Next
Email your contact information
and our team will help you set a time to for
a site survey. This is required to determine the fucntionality of the
system. Click here for
Licensed | Bonded | Insured
Automated Power Systems. All rights
in this document is subject to change without notice.
and companies referred to herein are trademarks or registered
of their respective companies or mark holders.
Violators will be