net-zero

Resulting in neither a surplus or deficit because gains and losses cancel out.

net-zero carbon emissions

"We're on an important journey - to support the Government's target of being net-zero by 2050, to help the country build back better as we recover from the pandemic, and to help passengers and freight users make the greenest choices they can."

Of a building or system, generating as much energy through solar, wind, and other renewable resources as it uses from the electricity network.

Heath's home is defined as net-zero, which means it produces as much energy as it consumes throughout the year.