Land use on the Kokkinochoria plain: solar, housing or greenhouses
The Kokkinochoria municipality owns 40 hectares of irrigated land near a village. It must choose one use for the next five years and cannot borrow beyond €1.0 million. Option A leases all the land to a solar developer for €180,000 per year; the project creates 120 temporary construction jobs for nine months and 6 permanent jobs, but removes annual greenhouse output worth €90,000 net. Option B sells all the land for €3.2 million to build 60 affordable flats; the municipality must fund €1.1 million of road and water infrastructure, and 420 households are on the waiting list. Option C keeps all land in greenhouse agriculture, which yields €150,000 net per year and supports 85 jobs; an EU grant of €500,000 is available only if the municipality matches €250,000. Local farmers argue food security matters; the solar firm stresses renewable-energy targets; housing advocates cite rents risen 25% in three years. The council wants a decision that is economically sound and politically defensible.
1. Calculate the opportunity cost of selecting Option B in the first year. Explain why the €3.2 million sale price is not itself the opportunity cost, and state any assumption you make.
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Reasoning: Opportunity cost is the value of the next best alternative forgone, not the money received from the chosen option. I first rank the alternatives by first-year net benefit.
- Option A: €180,000 lease income.
- Option C: €150,000 annual greenhouse net income plus the net grant advantage of €500,000 − €250,000 = €250,000 in the first year, so €400,000.
- Option B: €3.2 million sale minus €1.1 million infrastructure = €2.1 million net fiscal inflow, plus the social value of 60 flats.
If the council chooses B, the best forgone alternative in year one is C, worth €400,000. Therefore the first-year opportunity cost is €400,000, assuming the grant is received and the match is genuinely additional. From year two onward, C yields only €150,000, so the best recurring alternative becomes A at €180,000.
The €3.2 million is a transfer of an asset, not a net benefit. It is a financing inflow that must be set against the infrastructure cost and the lost annual income. Treating the sale price as the opportunity cost would double-count the land's value and ignore what the land could have produced.
2. The EU grant is approved only for Option C. Using a production possibility frontier with housing units and net agricultural output, explain the likely effect of the grant on the frontier and on the attractiveness of C. Does the grant eliminate scarcity?
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PPF effect: With housing units on one axis and net agricultural output on the other, the grant is sector-specific. It can fund irrigation, storage or greenhouse technology, so it mainly shifts the agricultural intercept outward; the maximum housing capacity is unchanged because the land area and municipal budget are fixed. If the grant also relaxes the matching constraint, the whole frontier may shift slightly outward, but the rotation is biased toward agriculture.
Attractiveness of C: The grant raises C's first-year net return from €150,000 to €400,000 and may raise future output if it is capital investment rather than a one-off transfer. That makes C more competitive against A's €180,000 lease. However, the municipality must still find €250,000, which has an opportunity cost: that money cannot be used for road maintenance or the housing match.
Scarcity: The grant does not eliminate scarcity. Land, administrative capacity and the borrowing cap remain fixed. The frontier moves outward at best, but every extra unit of agricultural output still has an opportunity cost in housing or solar capacity. Scarcity is shown by the need to choose a point on or inside the new frontier, not by the size of the grant.
3. Recommend one option to the council. Use at least two economic criteria and identify one stakeholder trade-off.
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Recommendation: Choose Option B, but with a legal covenant that the 60 flats remain affordable for at least 20 years.
Criterion 1 - net fiscal contribution: B gives €3.2 million − €1.1 million = €2.1 million upfront. Over five years, A gives €900,000 and C gives €150,000 × 5 + €250,000 = €1.0 million. Even after discounting, B's upfront surplus is far larger and can fund other municipal services.
Criterion 2 - addressing an identified shortage: 420 households are waiting and rents have risen 25%. The social benefit of 60 affordable units is likely to be high, especially if the alternative is temporary subsidies. A and C create more permanent jobs (6 and 85) but do not address the housing constraint.
Trade-off: Farmers lose 85 agricultural jobs and food-security capacity. That is a real cost, not a transfer. The council should use part of the sale to fund retraining or a smaller greenhouse site, and should publish the covenant so the housing benefit is not capitalised into higher prices. If the council weights rural employment above housing need, C becomes defensible; on narrow fiscal and housing criteria, B is stronger.