Passive Solar Greenhouse Calculator

How many people are you feeding?

This determines everything — greenhouse size, yield targets, and how many months of the year your greenhouse keeps your family supplied.

1–2 people

A compact greenhouse covers the majority of your vegetable needs year-round with minimal effort.

3–4 people

A mid-size setup that feeds a family and often produces surplus for preserving and sharing.

5 or more people

Larger household, extended family, or small community. Serious food production at meaningful scale.

I'm growing for market / commercial

Revenue-generating operation — CSA, farmers market, restaurant supply, or agritourism.

Where is your property?

Your location tells us your growing season, energy profile, and when you'll be harvesting each month of the year.

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What is motivating you to consider buying a greenhouse?

Your goal shapes the crop mix and what we highlight in your results.

Food security—feed my family no matter what

Staple crops, calorie-dense roots, and greens. Resilience and independence over variety.

Health—nutrient-dense, chemical-free produce

High-nutrition crops: Microgreens, herbs, leafy greens, tomatoes. No pesticides, ever.

Abundance—variety, flavour, and seasonal surplus

Grow everything I love, preserve the surplus, share with neighbours.

Commercial return—revenue from the greenhouse

High-value crops, market garden integration, CSA or restaurant supply.

How far do you want to extend the season?

This determines how your greenhouse is engineered and what it can produce in the coldest months.

Season extension — 2–3 extra months

Start earlier in spring, harvest later into fall. Minimal heating. Highest ROI per dollar spent.

Winter growing — fresh food through the cold months

Cold-hardy greens, roots, and herbs October through March. Climate Battery system required.

Year-round — 12 months of production

Tomatoes, cucumbers, peppers, and herbs every month. Full Climate Battery and supplemental lighting.

Your Results Are Ready

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