Choosing is hard. Getting it wrong is costly

A municipality needs to rebuild a school. It has three options: routine maintenance, deep refurbishment, or new construction. The first costs less today, but in ten years the building will need redoing again. The third costsmore, but lasts fifty years and also improves air quality in the neighbourhood. Which one do you choose? The answer is not obvious. And often, without adequate tools, the choice simply falls on the least expensive option in the short term -regardless of how much value it holds over the long run. This is precisely the problem that the ENPV, the Economic Net Present Value, helps to solve.
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What the ENPV is, in plain terms
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The ENPV is a number. It indicates whether a public investment projectis worthwhile: if it is positive, the project creates morevalue than its costs; if it is negative, it costs more than it returns. The under lying logic is simple: a public project does not only generate direct costs and revenues, it also generates welfare. A well-built school improves educational outcomes, reduces energy costs, raises property values in the neighbourhood, and lowers emissions. The ENPV takes allthese effects, lines them up, and turns them into a single comparable figure. There is then an essential technical element: discounting. One euro spent today is worth more than one saved twenty years from now, and the ENPV accounts forth is asymmetry in order to make projects of different durations and .
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Not your standard NPV
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Those familiar with the business world know that the NPV (financial NetPresent Value) is something different, a broader concept. A financial analysislooks only at cash flows: revenues, expenditures, interest. That works for aprivate company, which is accountable to its shareholders. But a municipalityis accountable to its community; indeed, the value created for the territoryand for citizens cannot be measured in euros alone. The ENPV alsoincludes:

·      Social benefits: access to services, quality of life, inclusion;

·      Environmental benefits: emissions reduction, energy efficiency, urbangreen space;

·      Employment effects: jobs created, local supply chains activated;

·      Indirect economic impacts: territorial productivity, attractiveness forbusinesses and residents.

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The ENPV does not decide on behalf of administrators. Determining how much weight to give the environment relative to employment, or which time horizon to consider, are political choices and they must remain so.

The ENPV enters official documents: the DOCFAP

Until a few years ago, the ENPV was used mainly in the assessments required by the European Union for large infrastructure projects. Today the situation has changed. With the new Public Procurement Code (Legislative Decree 36/2023), the DOCFAP - the Document on the Feasibility of Project Alternatives — was introduced. This is a mandatory document that every contracting authority must produce before starting the design phase: it serves to compare the different possible solutions and to choose the most advantageous one, including the option of doing nothing. The ENPV is the analytical tool at the heart of the DOCFAP for the assessment of public investments. Specifically, it is the indicator of the Economic Cost-Benefit Analysis (ECBA) used to compare project alternatives, so that every choice becomes documented, measurable, and defensible.

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Why it matters more than ever

In recent years, three factors have made the ENPV no longer an advanced methodological option, but a practical necessity for municipalities.

The NRRP and EU funds require sound economic assessments. Authorities that cannot demonstrate the value generated by their investments risk difficulties in financial reporting and, in the worst cases, the withdrawal of funding.

Pressure on accountability has grown. Citizens and the media increasingly ask to understand why one project was chosen over another. Having a positive and documented ENPV is the most solid answer an administrator can give.

Budget constraints are not easing. With fewer resources available, every wrong choice weighs more heavily. The ENPV helps identify where each euro of public money produces the greatest impact.

The ENPV forces one to line up all the consequences of a choice, compare alternatives on a homogeneous basis, and document the assumptions on which the decision rests. It does not eliminate uncertainty, but it makes it visible and manageable.