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.
Natural gas can also be used to produce both heat and electricity simultaneously, a technology called âcogenerationâ or âcombined heat and powerâ (CHP). Cogeneration systems are highly efficient, able to put 75 to 80 percent of the energy in gas to use.