Our household electricity consumption peaked at 24,500 kwh in 2000.

In 2008 we had lowered that number to 12,100 kwh!

Here's a list of many of the steps I've taken over the last few years

to reduce my electricity use(there's no gas service in my neighborhood):

Weatherizing and lighting:

* I had 12" of cellulose insulation blown into the attic
* Replaced the windows with Sears dual pane windows. Very
expensive, but made a huge difference.
* Keep the sun off the windows at all cost - plant a tree or hang
up shade cloth. I got really lucky with our home's layout and didn't
have to do anything about this - but I did just build a shade pergola
to keep the sun off my bedroom wall and grow a garden.
* Removed most of the carpeting and painted the concrete floors.
The concrete keeps the house much cooler in the summer.
* Weatherstripped and replaced the thresholds on all the doors
* Caulked all the gaps and cracks in the exterior I could find.
* Installed a "Solatube" skylight in a dark bathroom(off the dark
main hallway) that helps reduce the need for artificial lighting
during the day.
* Replaced all incandescent bulbs with either CFL or LED bulbs.
* Experimented with lower and lower wattage bulbs in different
fixtures and removed/reduced extraneous lighting.
* Installed one and replaced 3 ceiling fans with energy star models.

Major Appliances:

* Replaced our rooftop heat pump with a 14 seer unit summer of
'07. Not sure what the old one was, but I was disappointed in the
savings from this expensive purchase...

* Bought a much smaller energy Star Refrigerator with freezer on
top - our old sidw-by-side was too big for our family and pretty
inefficient. This made a BIG difference.
* Bought a top loading clothes washer and use cold water almost
all the time - these save a ton of water, too.
* Turned down the water heater to 120, and put it on a timer. Our
water heater is in our garage, which is over 100 degrees for most of
the summer, so it only needs to run for maybe 2 hours while the
weather is hot, especially if we time our showers and dishwashing
correctly.
* Our dishwasher broke a few years ago and we decided not to
repair/replace it. Hand washing may or may not save electricity and
probably uses more water, so I'd eventually like to get a really
efficient dishwasher the energy labels are really handy for these big
appliance choices.

Small appliances:

* I imagined I lived in a tiny apartment and rethought the whole
kitchen experience: I shut off the wall oven at the breaker and only
use it for holiday baking.
* We use a convection toaster oven, a microwave, and a single
"burner" induction cooktop for most of our cooking(pressure cookers
and crock pots are efficient too).
* I disconnected an instant hot water dispenser and use an
electric kettle instead to boil small amounts of water.
* Our coffeepot brews into a thermal carafe.

Electronics etc:

* My home theater gear was using ridiculous amounts of power, so I
returned the Cox DVR, replaced the receiver and dvd player, gave away
the vcr we never used, unplugged the xbox, and put everything on a
smart power strip - it cuts power to several devices when the receiver
is turned off. These are great for computers, too.
* Replaced my tower computer and CRT monitor with a Mac Mini and
LCD monitor.
* Get ruthless with phantom loads aka vampire power. Anything
with a standby light or an AC adapter that feels warm to the touch is
wasting energy. Unplug them, put them on switches or timers - this is
really cheap and could make a big difference depending on your
lifestyle.
* Disconnected a hardwired alarm system - this saved money in 2 ways.

Water Conservation:

* Replaced my old 6(?) gallon per flush toilets(2) with 1.6 GPF. Tempe offers up to a $75 rebate on these.

* Installed a 1.5 gallon per minute(gpm) showerhead.

* Stopped watering my grass/weeds.

*Installed 1.5 GPM aerators on bathroom faucets.

I would love to buy a pool cover to slow water loss through evaporation. Suggestions welcome.

These measures have reduced our annual water consumption from a peak of 250,000 gallons in 2000, down to only 57,000 gallons in 2008.