Framing basement walls sounds like it would be pretty simple, but it actually takes almost twice as long as framing a standard wall. The reasons for this is that the foundation walls are never plumb (straight up and down) and the floor in never level. To combat this, the installation methods are pretty simple, but have to be meticulous.
When you combine the tax benefits with the added savings you can get the solar installation done so cheaply that you may be able to afford a full blown system right away.
When you want to start small, begin with a solar attic fan. This type of fan features sensors that can turn on the fan at a certain temperature. This removes heat from your home, lowering your cooling costs. Additionally, as it is solar powered, your power bill will go down, not up.
Word of mouth - ask locally to see if someone recommends a good electrician. If the same name still appears then most likely be trusted in the community and be a safe bet.
There are many different ways to find an electrician. You can ask around friends and colleagues, let your fingers do the walking in the phone book or contact the local electrical contractors union for help. You should always check to make sure the Dallas electrician you hire has all the licenses needed for the city or state that they practice in as well as proper damage and liability insurance just in case an accident occurs.
Wiring is the major thing to examine before purchasing an used trailer. Trailers built in the 70's or before could have serious wiring issues. That's because laws were more lax then and electricians got away with installing aluminum wiring which was stretched tightly to cut costs. After a period of time, let alone moving the trailer, these wires can snap or crack making them a serious fire hazard. Have an electrician check the wiring in a mobile home you're considering - it'll be worth the price he charges.
Most home wiring is completed with any number of 14 gauge or No. 12. No. 14 the least size allowed able under usual codes. Always use the cable the same size for the continuation of any extended wiring circuit.
Another consideration is how much power you want to generate. Here too, you'll find a fairly wide range of outputs. You may want to build a smaller PMG to get a feel for its design and power output before moving up to a higher power version.