Green GDP and What GDP Leaves Out
Chapter Eighteen
Syllabus topic 1.5, "National Income and its measurement (GDP, NDP,GNP, NNP, PCI, GVA, Green GDP)"
Pages 105 to 110 of 556
In one line
Green GDP is ordinary GDP with two deductions made: the natural resources the economy used up during the year, and the damage it did to the environment.
In the wording a student can write in an exam: green gross domestic product is an environmentally adjusted measure of national output, obtained by deducting from conventional GDP the monetary value of the depletion of natural resources and the cost of environmental degradation caused during the accounting period, so that the figure reflects growth which has not been financed by running down the country's natural capital.
Why the ordinary measure needed correcting
Conventional national accounting has a blind spot that a single example exposes.
A forest is cut down and the timber sold for 500 crore rupees. In the national accounts, GDP rises by the value added in felling, transporting and milling. The forest itself, which had stood for a century, appears nowhere, because it was never bought and so was never valued. The country is poorer by a forest and its accounts say it has had a good year.
The same accounts deduct depreciation on a factory shed. [National Income: The Concepts] showed that GDP minus depreciation gives NDP, and the reason is exactly this: a machine used up in production has to be replaced merely to keep output going, so it cannot be treated as income. Green accounting is that principle applied consistently. If we deduct the wearing out of a machine, which was made by people, there is no reason in logic to ignore the using up of a coal seam, an aquifer or a fishery, which was not.
There is a second, separate blind spot. Damage is counted as production. An industry that pollutes a river adds its output to GDP; the hospital bills of the people who fall ill and the cost of cleaning the water are added to GDP as well. The accounts record the harm twice as a gain and never once as a loss.
What Green GDP deducts
Two adjustments, and an examiner wants them separated.
1. Depletion of natural capital. The reduction during the year in the stock of natural resources that are used up in production: minerals extracted, groundwater drawn beyond recharge, timber felled beyond regrowth, fish taken beyond the sustainable catch, soil lost to erosion.
2. Degradation of the environment. The cost of the deterioration in the quality of air, water, soil and ecosystems, whether by pollution or by loss of biodiversity, together with the value of the ecosystem services lost as a result, such as flood protection from a mangrove or pollination from an insect population.
So: Green GDP = GDP minus depletion of natural resources minus the cost of environmental degradation. Sometimes a third adjustment is made for defensive expenditure, the spending undertaken only to repair or prevent environmental harm, on the ground that it restores a position rather than improving one.
Green GDP and What GDP Leaves Out
The term to know is natural capital. MoSPI's own explanation attributes the term to the economist E. F. Schumacher and defines natural capital as the natural asset in its role of providing natural resource inputs and environmental services for economic production, covering both renewable and non renewable resources. Green accounting treats natural capital as an asset on the nation's balance sheet, so that using it up reduces wealth exactly as using up a machine does.
Where India stands, from the official record
The framework. The internationally agreed standard is the System of Environmental Economic Accounting (SEEA), adopted by the United Nations Statistical Commission, which sits alongside the System of National Accounts and uses the same concepts and classifications so that the two can be read together.
The Indian institutional history, from MoSPI's EnviStats FAQ 2025.
- Many separate research studies had been done in India on forests, wetlands, coastal and marine systems and mangroves, but a full account could not be compiled from them, because the methods and definitions differed and the results could not be aggregated. That is worth stating in an answer, because it explains why a country with a great deal of environmental research had no environmental accounts.
- To answer that, MoSPI constituted a high level Expert Group in 2011 under the chairmanship of Professor Sir Partha Dasgupta, Frank Ramsey Professor Emeritus of Economics at the University of Cambridge, with the mandate of developing a framework for green national accounts for India and a roadmap to implement it.
- The Expert Group submitted its report, Green National Accounts in India: A Framework, in 2013, and recommended compiling the accounts of the SEEA Central Framework in a phased manner, beginning with asset accounts and supply and use tables.
- Acting on that, the National Statistical Office began compiling environmental accounts in the SEEA framework in 2018 and has released them since, in the annual publication EnviStats India, whose Volume I is environment statistics and whose Volume II is the environment accounts.
What India therefore does and does not publish. India publishes environmental accounts: asset accounts for land, water, forests, minerals and energy, and ecosystem accounts covering extent, condition and services. It does not publish a single official headline number called Green GDP, and an answer that claims India reports one is wrong. The phased approach the Dasgupta Group recommended is deliberate: the asset accounts have to exist before any aggregate adjustment can be honest.
Green GDP and What GDP Leaves Out
Why a single Green GDP figure is so hard to produce
This is the section that separates a good answer from a list, and every one of these is a real obstacle rather than an excuse.
1. Valuation. A forest's timber has a market price. Its role in holding soil, storing carbon, recharging groundwater and supporting species does not. Economists estimate such values by indirect methods, contingent valuation by asking people what they would pay, hedonic pricing by observing what buyers pay for cleaner locations, replacement cost by asking what an engineered substitute would cost, and each method gives a different number.
2. What counts as depletion. A renewable resource is depleted only if it is taken faster than it regenerates, so a sustainable yield figure must be agreed before anything can be deducted.
3. Data. Estimating the stock of groundwater under a district, or the condition of a wetland, requires physical measurement that most countries do not have at national scale.
4. Whose loss is it. A river polluted in one State harms people downstream in another. National accounting has no natural home for a cost that crosses a boundary.
5. Time. Carbon emitted this year damages a generation not yet born. Putting a present value on that requires a discount rate, and the choice of discount rate changes the answer by an order of magnitude. This was the central controversy in the economics of climate change and it is not settled.
6. It is politically inconvenient. A Green GDP figure will always be lower than the conventional one, and a growth rate calculated on it can be lower too. That is not a reason against publishing it, but it explains why adoption everywhere has been slow.
A worked example: two districts with the same GDP
The facts. Two districts each record gross value added of 1,000 crore rupees in a year.
District A earns it from mining. It extracted iron ore that took geological time to form, worth 300 crore on any reasonable valuation of the stock removed, and the run off from the workings has silted a river, costing 60 crore in lost irrigation and fisheries downstream.
District B earns it from software services and horticulture. It depleted no non renewable stock and its measured degradation is 10 crore.
Conventional accounting. Both districts contributed 1,000 crore. They are indistinguishable.
Green accounting.
- District A: 1,000 minus 300 minus 60 = 640 crore.
- District B: 1,000 minus 0 minus 10 = 990 crore.
What this shows, and it is the whole point of the concept. The conventional figure measures the flow and ignores the balance sheet. District A converted an asset into income and recorded the conversion as production. A student who can state that in one sentence has understood green accounting.
Green GDP and What GDP Leaves Out
Where a lawyer meets it. Compensation for the acquisition of land under an environmental clearance, the assessment of damages for environmental harm, and the polluter pays principle all require exactly this kind of valuation, and the courts have had to do it without a settled method. Green accounting is the attempt to build that method at national scale.
The wider criticism of GDP, of which Green GDP is one answer
Green GDP is one of several corrections proposed to a measure everybody agrees is imperfect. An examiner who asks about the limitations of GDP as a measure of welfare wants this list.
GDP counts the wrong things. Rebuilding after a flood, treating illness caused by pollution and running prisons all add to GDP.
GDP misses the right things. Unpaid domestic and care work, overwhelmingly done by women, is a very large part of real production in India and appears nowhere. Leisure has no entry. Neither does the quality of what is produced.
GDP is silent on distribution. [Poverty and the Poverty Line] shows that a rising average is consistent with a growing number of poor people.
The alternatives proposed. The Human Development Index, published by the United Nations Development Programme from 1990 and built on the capability approach associated with Amartya Sen, combines income with life expectancy and education. The Genuine Progress Indicator and the older Measure of Economic Welfare of Nordhaus and Tobin adjust national income for leisure, pollution and unpaid work. Gross National Happiness, adopted by Bhutan, replaces the objective entirely.
The honest conclusion for an answer. None of the alternatives has displaced GDP, because GDP is comparable across countries and across time, is compiled to a common international standard, and is available quickly. The professional consensus is not to abandon it but to publish it alongside the accounts that show what it leaves out, which is precisely the programme the Dasgupta Group recommended and the National Statistical Office is executing.
What beginners get wrong
"Green GDP is GDP of the environmental sector." It is not a sector's output. It is total GDP with environmental deductions applied.
"India publishes Green GDP." India publishes environmental accounts under EnviStats India in the SEEA framework. It does not publish a single official Green GDP headline.
"Green GDP is always much smaller." How much smaller depends entirely on the valuation method, which is the difficulty rather than a detail.
"Deducting pollution damage is a new idea." The principle is the same one that already deducts depreciation of machinery to get from GDP to NDP. Green accounting extends an accepted rule; it does not invent one.
Quick revision
- Green GDP = GDP minus depletion of natural resources minus the cost of environmental degradation, and sometimes minus defensive expenditure.
- The logic: the accounts already deduct depreciation of produced capital, so consistency requires deducting the using up of natural capital.
- Natural capital, a term MoSPI attributes to E. F. Schumacher, is the natural asset providing resource inputs and environmental services to production.
- The framework is SEEA, the System of Environmental Economic Accounting, which sits alongside the System of National Accounts.
- India's record: MoSPI constituted an Expert Group in 2011 under Professor Sir Partha Dasgupta; its report Green National Accounts in India: A Framework came in 2013 and recommended phased compilation under the SEEA Central Framework; the NSO has compiled environment accounts since 2018 and publishes them in EnviStats India.
- India does not publish a single Green GDP figure, and saying it does is an error.
- Six difficulties: valuation of non marketed services, defining depletion for renewables, physical data, harm that crosses boundaries, the discount rate for future damage, and political inconvenience.
- Alternatives to GDP: Human Development Index (UNDP, from 1990), Genuine Progress Indicator, Measure of Economic Welfare, Gross National Happiness. None has displaced GDP; the working answer is to publish both.
Green GDP and What GDP Leaves Out
Test yourself
1. Define Green GDP and explain the reasoning behind it. Green GDP is conventional gross domestic product adjusted by deducting the monetary value of the natural resources depleted during the year and the cost of the environmental degradation caused, so that output which was financed by running down natural capital is not treated as income. The reasoning is one of consistency: the accounts already deduct depreciation of produced capital such as machinery and buildings in moving from gross to net product, on the ground that what has been used up must be replaced before anything is available for consumption. Natural capital is used up in the same way, and the only reason it was ignored is that it was never bought and therefore never valued.
2. What are the two adjustments made in arriving at Green GDP? The first is depletion, the reduction during the year in the stock of natural resources used in production, such as minerals extracted, groundwater drawn beyond recharge, timber felled beyond regrowth and soil lost to erosion. The second is degradation, the cost of the deterioration in the quality of air, water, soil and ecosystems, including the value of ecosystem services lost. A third adjustment is sometimes made for defensive expenditure incurred only to prevent or repair environmental damage.
3. Trace India's institutional progress towards green national accounts. Numerous Indian studies on forests, wetlands and coastal and marine systems existed but could not be aggregated into an account, because their methods and definitions were not comparable. MoSPI therefore constituted a high level Expert Group in 2011 under Professor Sir Partha Dasgupta of the University of Cambridge to develop a framework for green national accounts and a roadmap for implementing it. The Group's report, Green National Accounts in India: A Framework, was submitted in 2013 and recommended compiling the accounts of the SEEA Central Framework in phases, beginning with asset accounts and supply and use tables. The National Statistical Office began compiling environmental accounts in the SEEA framework in 2018 and publishes them annually in EnviStats India.
Green GDP and What GDP Leaves Out
4. Why is a single Green GDP figure difficult to compute? Because many of the services being valued have no market price, so that estimates depend on indirect techniques such as contingent valuation, hedonic pricing and replacement cost, each of which yields a different figure. Because depletion of a renewable resource can be defined only against an agreed sustainable yield. Because the physical data on stocks and conditions of resources are incomplete. Because damage often crosses State and national boundaries, so that the loss is not confined to the accounting unit. Because damage to future generations must be discounted to the present, and the choice of discount rate changes the answer greatly. And because the resulting figure is always lower than the conventional one, which makes its adoption politically uncomfortable.
5. Two districts each record output of 1,000 crore rupees. One is a mining district and one is a services district. How does green accounting distinguish them? Conventional accounting cannot distinguish them at all, because both recorded the same value added. Green accounting deducts, from the mining district, the value of the non renewable stock extracted, which was an asset converted into income rather than income earned, together with the cost of the degradation its workings caused downstream. The services district has little or nothing to deduct. The adjusted figures separate an economy that has grown by producing from one that has grown by consuming its own balance sheet, which is precisely what the conventional measure cannot show.
6. State four limitations of GDP as a measure of welfare and name two alternatives. GDP counts activity that repairs harm, such as the treatment of pollution related illness and reconstruction after a disaster, as though it were a gain. It omits unpaid domestic and care work, subsistence production and leisure. It is silent about distribution, so it can rise while poverty deepens. And it takes no account of the depletion of natural resources or of environmental damage, which is the gap Green GDP addresses. Among the alternatives are the Human Development Index published by the United Nations Development Programme since 1990, which combines income with life expectancy and education, and the Genuine Progress Indicator, which adjusts national income for pollution, unpaid work and other omissions. Neither has replaced GDP, and the practical answer has been to publish the environmental and social accounts alongside it.
The rest of this subject
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