Which DNA Testing Company Should I Use? The answer, as in many areas of genealogy, is it depends. Because different people test with different companies, many of which maintain their own databases of tested individuals, you will achieve the greatest chance of useful matches by either being tested, or sharing your DNA results, with as many companies as possible.
Cogeneration / Combined heat and Power (CHP) Cogeneration (cogen) through combined heat and power (CHP) is the simultaneous production of electricity with the recovery and utilisation heat.
In a micro CHP a fuel source such as natural gas is used to generate electricity, and the excess heat from that operation is used to heat a home and in some cases water as well. The efficiency of converting fuel to useful energy may be as high as 90 percent.