Ah, calculating carbon footprint from an electricity bill is a modern concern. You must multiply the units consumed by the emission factor for your regional grid; for Maharashtra, it is approximately 0.82 kg CO2 per unit. Yet, in our high-rise, our footprint is lower than the bill suggests, as our building's common areas and our own flat run largely on solar power from the terrace installation. My wife insisted on the investment, saying it was like buying peace, not just panels.
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