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Agriculture & Future Food Systems · Article

Phased pilots and transition review

How to test a change in food production through bounded stages, review useful evidence and avoid committing beyond what the results support.

Preparation and related reading

Shared Foundations

Related articles

This article helps you

  • Separate a demonstrated component from an operating food-production system.
  • Set review questions and boundaries before a pilot begins.
  • Interpret pilot output and resource ratios without assuming successful scale-up.

1. Identify the change being tested

A transition might add a greenhouse to a field-based supply, introduce a fermented ingredient or share processing and storage between producers. Begin with the problem and useful food function, rather than treating adoption of a new process as the goal. Identify the people affected, current service, intended improvement and constraints.

Record which part of the system will change and what must keep working during the trial. Existing supply, trained staff and maintenance arrangements have value. Removing them before an alternative is demonstrated can create an avoidable gap. Food-system transitions need both production evidence and evidence about access, resources and supporting services.

2. Different stages answer different questions

A laboratory result may demonstrate that one organism or process can produce an ingredient under specified conditions. It does not automatically establish a safe finished food, reliable weekly output, affordable operation or a commercial system. A small operating pilot can answer some of those additional questions, while others need longer observation or a different test.

For each stage, write what is demonstrated, what is assumed and what remains unknown. Track feedstocks, nutrients, energy, water, waste, processing and infrastructure at the actual tested boundary. An emerging process should remain labelled emerging when broader performance is still projected. Detailed production mechanisms and food-safety validation belong in their primary topics.

3. Make the pilot reviewable

A pilot plan names its useful output, period, participants, responsibilities and comparison basis. It identifies how measurements will be collected and which observations would support continuation, revision or stopping. A production milestone is separate from the safety and lawful-operation conditions that require competent, process-specific assessment.

Limit commitments to what the evidence justifies. A reversible trial might use temporary arrangements while preserving existing supply, but reversibility has costs and limits. Ask what happens if the pilot stops, who bears extra work and how participant data and feedback are handled. Neither a small sample nor a temporary installation removes those responsibilities.

4. Use actual output in a resource ratio

In an invented one-week pilot, the target is 40 kg of a specified usable product delivered at a defined receiving point. Actual delivered output is 30 kg, with the same specification. A stated meter records 24 kWh for the included pilot equipment over that week. The output is 30/40 = 75% of the quantity target, with a 10 kg gap.

The measured electricity intensity within this boundary is 24 kWh / 30 kg = 0.80 kWh/kg. Dividing by the planned 40 kg gives 0.60 kWh/kg, but that is not the intensity of the actual pilot output. The account excludes upstream inputs, building services not on the meter, distribution beyond the receiving point and other environmental impacts.

The same product specification is an explicit case assumption, not safety clearance. One week provides no annual reliability estimate. The result can guide questions about causes, operating conditions and further tests; it does not prove a commercial cost or a universal improvement.

Invented pilot quantities and their different meanings
QuantityValueMeaning
Target usable output40 kg/weekProposed quantity milestone
Actual usable output30 kg/weekRecorded delivered quantity
Included metered electricity24 kWh/weekStated equipment boundary
Actual included intensity0.80 kWh/kg24 kWh divided by actual 30 kg

Measured pilot output, not planned output

Measured pilot output, not planned outputThe invented pilot records 30 kg actual usable output against a 40 kg target, and 24 kWh at the included equipment meter. Actual intensity is 24 divided by 30, or 0.80 kWh/kg. Original hypothetical diagram. The meter boundary is incomplete for a full energy footprint. Quantity and intensity results provide neither process validation nor evidence that a wider system will perform proportionally.Included meter: 24 kWhOne pilot week; equipmentelectricity onlyActual output: 30 kgSame stated product and receivingpoint; target was 40 kgActual ratio: 0.80 kWh/kg24 kWh / 30 kg; upstream and otherservices excludedQuantity target: 40 kg30/40 = 75%; remaining quantitygap is 10 kgmatchingweekactualdenominatorcompare target
Original hypothetical diagram. The meter boundary is incomplete for a full energy footprint. Quantity and intensity results provide neither process validation nor evidence that a wider system will perform proportionally.
Read the diagram as text

The invented pilot records 30 kg actual usable output against a 40 kg target, and 24 kWh at the included equipment meter. Actual intensity is 24 divided by 30, or 0.80 kWh/kg.

Parts

Included meter: 24 kWh
One pilot week; equipment electricity only
Actual output: 30 kg
Same stated product and receiving point; target was 40 kg
Actual ratio: 0.80 kWh/kg
24 kWh / 30 kg; upstream and other services excluded
Quantity target: 40 kg
30/40 = 75%; remaining quantity gap is 10 kg

Connections

  • Included meter: 24 kWh → Actual output: 30 kg: matching week
  • Actual output: 30 kg → Actual ratio: 0.80 kWh/kg: actual denominator
  • Actual output: 30 kg → Quantity target: 40 kg: compare target

5. Review effects, not only activity

Compare actual results with the recorded goals and baseline. A before-and-after change can be influenced by weather, demand, prices or selection of participants. It is descriptive evidence unless an appropriate comparison and its assumptions support a causal claim. Feedback can identify practical barriers that an output total misses.

A missed target is a reason to investigate, not automatic proof that the whole method is unsuitable. A met target is also limited evidence: examine rejected output, resource use, costs, interruption recovery and effects on other actors. Record revisions openly rather than changing the original goal after seeing the result.

6. Decide what the next stage needs

Wider adoption may require different equipment, staffing, utility capacity, maintenance, logistics and finance. Multiplying a pilot's output does not demonstrate that these dependencies will scale proportionally. Check the conditions under which the pilot worked and the new conditions it would encounter.

Choose a bounded next step: repeat under different conditions, resolve a specific bottleneck, compare an alternative or stop the proposed change. Keep the evidence and remaining uncertainty visible. A transition is progress when the intended food function and supporting system improve under tested conditions, not simply when a larger facility is installed.

Worked examples

Actual output and an incomplete target

What does the stated pilot establish from 30 kg actual output, a 40 kg target and 24 kWh included metered electricity?

  1. Quantity coverage is 30/40 × 100 = 75%; the gap is 40 − 30 = 10 kg.
  2. Actual included electricity intensity is 24/30 = 0.80 kWh/kg.
  3. The target-denominator calculation 24/40 = 0.60 kWh/kg uses unproduced output and does not describe the actual pilot.

The case records 75% of the stated quantity target and 0.80 kWh/kg at the included boundary. It establishes no complete energy footprint, safety validation or annual performance.

A repeat week changes a ratio

Suppose a second invented week produces 40 kg of the same usable product and records 32 kWh on the same meter. How do intensity and total use compare with the first week?

  1. Second-week included intensity is 32/40 = 0.80 kWh/kg, equal to the first week's 24/30.
  2. Total electricity rises from 24 to 32 kWh: an 8 kWh increase.
  3. Relative total increase is 8/24 × 100 = 33⅓%; usable output also rises by 10/30 × 100 = 33⅓%.

The two stipulated weeks have equal included intensity and different total use. This descriptive pair does not establish the cause of the changes or a general operating rule.

Check your understanding

  1. Does a successful laboratory ingredient demonstration prove affordable continuous commercial food production?

    Show answer and reasoning

    No.

    A component result leaves additional production, safety, resource, infrastructure and access questions.

  2. Can a pilot's measured electricity be divided by planned output to report actual intensity?

    Show answer and reasoning

    No.

    Use the actual useful output at the matching boundary and period, or clearly label a different hypothetical calculation.

  3. What evidence should accompany a decision to expand a pilot?

    Show answer and reasoning

    The tested conditions, actual outcomes, resource and service dependencies, comparison limits and unresolved risks.

    A larger commitment needs evidence about the additional conditions it introduces, not just a multiplication of pilot output.

Key ideas

  • Define the food function and preserve necessary services during a trial.
  • Separate laboratory demonstration, operating pilot and projected wider performance.
  • Use actual output and an explicit boundary in measured resource ratios.
  • Keep original milestones, comparison limits and the reasons for revisions visible.

References

Sources supporting the explanations and examples in this article.

  1. Impact Evaluation in Practice, second edition — selecting indicators and causal comparisonsPaul J. Gertler; Sebastian Martinez; Patrick Premand; Laura B. Rawlings; Christel M. J. VermeerschTextbook chapter · PDFdocuments1.worldbank.orgRead source
  2. Business Management for Small-scale Agro-processorsPeter Fellows; Alexandra RottgerTeaching resource · PDFfao.orgRead source
  3. Food and Agriculture Organization of the United Nations2 sources
    1. The State of Food and Agriculture 2021: Making agrifood systems more resilient to shocks and stresses — food supply chainsFood and Agriculture Organization of the United NationsReference guidefao.orgRead source
    2. Sustainable Food Systems: Concept and FrameworkHanh NguyenReference guide · PDFfao.orgRead source