Your electricity bill shows you the tariff. It does not show you the health costs, the subsidy burden, or the import dependency that comes with every unit of coal-fired power you consume. Here is the fuller ledger.
India spends a substantial sum every year on electricity subsidies, much of it flowing to coal-based generation infrastructure and to below-cost power for agricultural and residential consumers. Those subsidies are funded by tax revenue, so, indirectly, every taxpayer is already paying for fossil-fuel-heavy power twice: once on their electricity bill, and once through their taxes.
Air pollution from coal power plants and fossil fuel combustion imposes large, well-documented health and economic costs in India, lost productivity, higher medical spending, and premature mortality concentrated in and around industrial and urban coal corridors. Multiple independent research bodies have put India's total air-pollution health burden in the range of a few percentage points of GDP annually; the exact figure varies by methodology and year, but the direction is consistent. This cost never appears on an electricity bill, but it is real, and it is being paid.
Coal-fired power generation in India emits roughly 0.8–0.9 kg of CO₂ per kWh produced. A household consuming 300 units a month is responsible for close to 3,000 kg of CO₂ a year from electricity alone, in the same range as the emissions from driving a petrol car well over 10,000 km.
India imports on the order of 240 million tonnes of coal a year, spending a significant sum in foreign exchange annually, even as domestic coal production has crossed 1 billion tonnes. Coal-fired power keeps Indian electricity prices partly hostage to global commodity markets, as households and businesses saw in 2022, when global coal and gas prices spiked sharply and several state DISCOMs struggled to keep tariffs stable.
Solar energy, by contrast, is entirely domestic once installed. The sun does not need to be imported. A solar system's fuel cost is zero, permanently, and regardless of what happens to global energy markets.
| Cost type | Coal / grid power | Solar power |
|---|---|---|
| Generation cost (per unit) | ₹5–8 | ₹1.5–2.5 (utility scale) |
| Tariff to consumer (2025–26) | ₹7–14 | ₹0.8–1.2 (post-payback) |
| Health externality | Real, meaningful | Negligible |
| Import dependency risk | High, ~240 MT/yr imported | None, fully domestic |
| Tariff trend | Rising, historically 7–9%/yr | Falling, new installs cheaper |
| Energy security | Grid-dependent | Independent, with storage |
Directional comparison for illustration. Actual generation and health-cost figures vary by study, plant vintage and region.
Our calculator adds up the visible tariff and the hidden ones, backup costs, outages, and rising rates, against a solar system sized for you.
Open the calculatorWe're an independent educational platform, not a sales channel. No forms, no calls, no pressure, explore the tools and go at your own pace.