Although electricity had been known to be produced as a result of the chemical reactions that take place in an electrolytic cell since Alessandro Volta developed the voltaic pile in 1800, its production by this means was, and still is, expensive. In 1831, Michael Faraday devised a machine that generated electricity from rotary motion, but it took almost 50 years for the technology to reach a commercially viable stage. In 1878, in the United States, Thomas Edison developed and sold a commercially viable replacement for gas lighting and heating using locally generated and distributed direct current electricity.
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.
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.