Options Analysis — Building and Using a Decision Matrix

📊 Options Analysis — Building and Using a Decision Matrix

Once you have identified the stakeholders and gathered the evidence, you need a structured way to compare the possible courses of action. A decision matrix is a tool used by planners, geographers, and governments to evaluate multiple options against multiple criteria simultaneously. It is not a magic answer machine — it is a thinking tool that ensures you assess every option by the same yardstick.

The Four Options — Wind Farm Case

Any complex decision typically has 3–4 genuine options. For the wind farm:

Building the Decision Matrix

The matrix scores each option against each criterion, then weights the criteria by importance. The weighting is the critical intellectual step — it forces you to state your priorities explicitly, which is exactly what the examiner wants to see.

Criterion	Weight	Option A (20 turbines)	Option B (10 turbines)	Option C (Alt. site)	Option D (None)
Carbon saving / energy output	30%	9/10	6/10	3/10	0/10
Community acceptance	25%	3/10	6/10	8/10	9/10
Economic benefit to area	20%	9/10	5/10	2/10	1/10
Environmental impact	25%	4/10	6/10	9/10	10/10
Weighted total	100%	6.35	5.90	5.45	4.75

Weighted total = sum of (score × weight) for each criterion. E.g. Option A: (9×0.30) + (3×0.25) + (9×0.20) + (4×0.25) = 2.70 + 0.75 + 1.80 + 1.00 = 6.25. These weights reflect a priority on hitting carbon targets and economic benefit to the area.

What the Matrix Tells You — and What It Does Not

The matrix suggests Option A scores highest — but this does not automatically make it the right answer. A decision matrix is only as good as the weights you choose. If the community accepts a decision through a legitimate, consultative process, they are far more likely to support future renewable energy projects. A 58% opposition rate against Option A could lead to years of legal appeals that delay carbon savings anyway. A geographer does not accept the matrix output blindly — they interrogate it, challenge the assumptions, and explain why the weighting choices are defensible.

This is exactly the kind of thinking the examiner is looking for in a Level 3 answer.