Keeping on top:  With deregulation, a whole host of electric resellers jumped into the market because there’s a whole lot of electricity to sell:  if Texas were a country, it’d be the 11th largest electricity consumer in the world!  Just by itself, it uses as much electricity as Spain or Great Britain!  That means there’s a whole lot of information you have to find, absorb, and process to make sure you’re getting the best rate for your needs.
As far as plan options offered by your local utility go, you are not spoiled for choice. Energy companies in Pennsylvania offer one plan with little to no incentive – other than rebates for owning energy efficient appliances. Energy providers, on the other hand, might offer attractive benefits you didn’t know were available with your supply service.
If you spend most of your leisure time out of the house, none of these plans will do much for your bottom line. But if home is your favorite place to be, you could profit. Based on the estimates of energy companies, most people use about 31% of their total energy on the weekends. If you go through the average 1,000 kWh per month, you'll get about 310 kWh for free. Using data compiled by the EIA, we estimated 30% of average total energy is also used during evenings (including weekend evenings), working out to about 300 free kWh.

Knowing how much electricity you use each month is important to finding the cheapest electricity plan. For Houstonians, usage is typically the lowest in the winter and highest in the summer. Your specific usage levels can be determined by simply looking back at previous electric bills and finding the kWh used. To avoid electric bill surprises during the peak summer months, you’ll need to accurately know your peak electricity usage which typically occurs in August.
Usually, fixed-rate renewable-energy plans are among the most expensive options. But in our research, we found Constellation’s green plan rates were comparable to its non-green versions. For example, out of two otherwise identical fixed-rate, 12-month plans from Constellation — “12 Month Fixed Rate 100% Green” and “12 Month Fixed Rate” — it’s the renewable version that currently costs less.

Since the 1990s, many regions have opened up the generation and distribution of electric power to provide a more competitive electricity market. While such markets can be abusively manipulated with consequent adverse price and reliability impact to consumers, generally competitive production of electrical energy leads to worthwhile improvements in efficiency. However, transmission and distribution are harder problems since returns on investment are not as easy to find.