Efficient Energy Planning

Definition and orientation

Efficient Energy Planning joins zone, sector and slope thinking. Zones respond to frequency of use and attention; sectors trace external energies such as sun, wind, fire or views; slope shapes gravity, access and water movement. Efficiency means meeting the function with appropriate effort and loss, not merely minimising human presence.

Practical meaning: Record journeys and maintenance frequency, map seasonal sectors and read contour and slope. Place frequently tended elements where access is realistic, work with beneficial flows and protect against hazardous ones. Compare the whole-life energy of construction, operation and maintenance rather than relying on a single technology label.

Questions it can guide:

• Where is attention repeatedly spent?
• Which incoming energies should be welcomed, deflected or buffered?
• How can gravity, access and sequence reduce avoidable work?

Origins, lineage and attribution

This page belongs to the ecological principle tradition published by Bill Mollison and Reny Mia Slay. The displayed title follows the authorised Academy catalogue; the closing acknowledgement records the nearby source wording where it differs.

Similar themes appear in David Holmgren’s twelve principles, but overlap is handled through explicit cross-links. The formulations are not represented as one list, and authorship is not transferred between traditions. The Academy paraphrases the practical meaning rather than reproducing substantial passages from the source books.

Ethical and principle context

Site Observation, Sector and Zone Analysis supplies the mapping method; Relative Location turns the findings into placement; Holmgren’s Catch and Store Energy and Small and Slow principles offer related but distinct questions.

Use Earth Care, People Care and Fair Share to test purpose, consequence and distribution. A provocative principle can widen judgement, but it cannot certify a preferred action. Pair it with evidence, a counter-question and a named review point.

When and how to use it

1. Name the decision, scale, affected people and living systems.
2. Translate the principle into context-specific questions rather than repeating it as a command.
3. Add a counter-question about safety, consent, urgency, maintenance or unequal effects.
4. Use a suitable framework or tool to gather evidence and compare alternatives.
5. Choose a proportionate action, state uncertainty and distinguish proposal from completion.
6. Record what observation or feedback would trigger adaptation or stopping.

Application in Mark’s Diploma and at Vila Pinheiro

The master register records this principle across Designs 1–10 but does not locate the exact phrase. Design 04 nevertheless supplies a verified connection: its energy proposal combines solar, wind and possible biomass, considers prevailing flows, storage, efficiency and monitoring. This is an Academy interpretation of documented design reasoning, not proof that Mark invoked this exact title or that the proposed system was completed.

Evidence boundary: the representative connection was checked in Mark D’Cruz, Design 04: Energy Self-sufficiency, controlled Diploma PDF, PDF page 15. The master register records broader use across Designs 1–10, but declaration alone is not converted into a public case result.

Limits, critiques and common misuse

• Treating zones as fixed rings rather than patterns of use and attention.
• Optimising labour while overlooking ecological cost or unequal care work.
• Using a technology’s rated efficiency as proof of whole-system suitability.
• Ignoring seasonal, ageing and maintenance changes.

No principle replaces consent, law, competent technical advice, ecological assessment or accountable maintenance. Where principles pull in different directions, make the tension visible rather than selecting only the phrase that supports an existing preference.

Where this material comes from

This ecological design principle comes from Bill Mollison and Reny Mia Slay’s Introduction to Permaculture (1991), where the source wording is “Efficient energy planning: zone, sector and slope”. It belongs to an early practical teaching set focused on placement, function, energy, living resources, scale, succession, diversity and edge. This page uses the authorised catalogue title “Efficient Energy Planning”; although teaching summaries use minor wording variants, these do not make the principle part of David Holmgren’s later twelve-principle formulation. Mark D’Cruz used or recorded this principle in his Diploma register; he is not its originator, and the master register records it as LIB-043. Its lineage and wording have been checked against the named publication tradition and Permaculture Association teaching records. The representative Diploma connection is limited to PDF page 15, with proposals kept distinct from measured outcomes.

Related entries

• How to Use Principles Without Turning Them into RulesPair a principle with evidence, counter-questions and a review point.
• Comparing Permaculture Principle TraditionsKeep the Mollison and Slay, Mollison attitudinal and Holmgren traditions distinct.
• Principles, Patterns and Systems ThinkingUse principles together without treating a slogan as proof.
• Bill Mollison: Permaculture as a Design SystemFollow Mollison’s wider contribution and Mark’s critical appreciation.
• Site Observation, Sector and Zone AnalysisMap flows, frequency, exposure and relationships before placing elements.
• Use Small and Slow SolutionsCompare a related Holmgren principle without merging the traditions.
• SADIMET: A Practical Permaculture Design ProcessPlace the principle inside survey, analysis, implementation and review.
• From Survey to Design at Vila PinheiroSee proposals, constraints and evidence connected at whole-site scale.