Enclave Feasibility

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Resource Quicklook

Pick a location. This estimates (1) solar PV yield and (2) temperature-driven heating/cooling pressure.

North/South (latitude)

Example: Zurich ≈ 47.3769

East/West (longitude)

Example: Zurich ≈ 8.5417

Panel tilt (optional)

If blank, PVGIS uses its default assumptions.

Panel direction (azimuth / aspect)

PVGIS aspect: 0 = south, -90 = east, +90 = west.

Real-world system losses (%)

Cables, inverter, dirt, heat, mismatch, etc. 10–20% is typical.

Temperature year (NASA)

Used for heating/cooling degree days from daily temps.

Comfort baseline temp (°C)

18°C is a common “comfort” baseline for degree days.

Results

Solar yield

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kWh per kWp per year (higher is better)

Solar “score”

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A normalized 0–100 style indicator for quick comparison

Heating pressure (HDD)

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Higher = colder climate (more heating demand)

Cooling pressure (CDD)

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Higher = hotter climate (more cooling demand)

Raw data (PVGIS + NASA)

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Enclave Sizing

Rough sizing for solar + battery + water energy + thermal storage.

1) Enclave size

How many people?

Total residents.

People per home (average)

Used to estimate number of homes/buildings.

2) Electricity use

Electricity per person per day (kWh)

2 = frugal, 6 = modest, 10+ = high.

Shared/community electricity per day (kWh)

Clinic, workshop, comms, pumps, refrigeration, etc.

“Busy hour” multiplier (peak factor)

Peak load vs average load (peakiness).

3) Solar quality

Solar yield (kWh/kWp/year)

Auto-fill from Tab 1 or set manually.

Panel size (watts per panel)

Used only to estimate panel count. Doesn’t change PVGIS yield.

Use Tab 1 solar yield

Solar safety margin (PV derate)

Lower = more conservative sizing (clouds, dust, aging, underperformance).

4) Battery backup

Backup hours you want

Hours of average-load coverage.

Battery usable fraction (DoD)

You typically don’t drain to 0%.

Battery efficiency (round-trip)

Charging + discharging losses.

5) Water + heat (optional)

Water per person per day (liters)

Drinking, cooking, hygiene. Not agriculture.

Water energy cost (kWh per m³)

Pumping + treatment (not desalination).

Need seawater desalination (RO)? RO energy (kWh per m³)

Only applies if RO is checked.

Heat demand per person per day (kWh thermal)

Set 0 to ignore heat/hot water modeling.

Days of thermal buffer

How many days of heat you want stored.

Fraction covered by thermal storage (0–1)

0.7 means storage covers 70% of thermal needs.

Tank temperature swing (°C)

Example: 90→50°C = 40°C swing.

Sizing Results

Estimated homes

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Plain-English Summary

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These are planning estimates. Real builds vary with roof layout, shading, spacing, tilt, local code, and whether PV is roof or ground mounted.

Avg electric load

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kW (average, not peak)

Peak electric load

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kW (average × peak factor)

Solar array size

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kWp needed (planning estimate)

Battery energy

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kWh usable + losses accounted

Water energy/day

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kWh/day (treatment + pumping + optional RO)

Thermal storage energy

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kWh thermal stored target

Water tank volume

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m³ of hot water equivalent (planning)

Raw computed values (for spreadsheets)

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