'Net metering' is sometimes seen in the news in the context of promoting the

1. 'Net metering' is an electricity billing mechanism that allows consumers who generate some or all of their own electricity, typically through renewable sources like rooftop solar panels, to feed electricity they do not use back into the grid. 2. When the household/consumer generates more electricity than it consumes, the electricity meter runs backward, effectively crediting them for the excess power sent to the grid. 3. When the household consumes more than it generates, the meter runs forward as usual. 4. At the end of the billing period, the consumer is billed only for the 'net' amount of electricity used (total consumption minus total generation). 5. This system directly incentivizes and promotes the production and use of solar energy (or other small-scale renewable energy) by households/consumers by making it economically attractive. 6. Options (B), (C), and (D) relate to different utilities or technologies (piped natural gas, CNG kits, water meters) and are not associated with net metering.