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Freeze Dryer Running Cost Calculator
The short version: a freeze-drying cycle costs kilowatt-hours times your rate, and nothing else. Take the one published kWh figure in this category that a reader can actually check (18.5 kWh for a 24-hour cycle [1]) against the EIA US residential average for June 2026 [2], and that is about $3.39 a batch. Change either number below and the arithmetic changes with it.
Every brand selling a home freeze dryer in the US under $5,000 publishes a dollars-per-batch figure. Not one of them publishes both the electricity rate and the cycle length it assumed, so not one of those figures can be reproduced. They are in the table further down, marked for what they are, and they are not used in any calculation on this page.
Work out your cost
Electricity only
The formula, in full
Per batch18.5 kWh × (18.34 ¢ ÷ 100) = $3.39
Per month$3.39 × 8 cycles = $27.14
Where the 18.5 kWh comes from, and what is wrong with it
Stay Fresh publishes it on a blog dated 2024-05-01, worded “18.5 kWh for a 24 hour freeze-drying cycle”, with its own stated rate of 18 ¢/kWh (“As of now the national average electricity rate is 18 cents per kwh”) and its own arithmetic: $0.09 + $2.16 + $1.08 = $3.33 [1]. It is the only published figure in this category that states both inputs, which is the whole reason it is the prefill.
| Phase | kWh | Publisher’s cost | As published |
|---|---|---|---|
| Freeze (pre-chilled chamber) | 0.5 | $0.09 | "$0.09" for "0.5 kWh" pre-chilled chamber |
| Main drying (~16 h) | 12 | $2.16 | "12 kWh"; "about 16 hours" |
| Final drying (~7 h) | 6 | $1.08 | "6 kWh"; "700-800W"; "7 hours" |
Conditions the publisher attached, and problems with the figure:
- Generic, not model-specific — it describes "a freeze dryer", not a machine you can buy by name.
- Conditioned on a medium unit with an 8 lb load.
- The rate inside it is a May 2024 figure. It is stale against the EIA rate this tool prefills.
- Stay Fresh publishes the freeze phase as both "1-4 kWh" and "0.5 kWh" in the same article; the $3.33 total rests on the smaller figure.
- Stay Fresh’s own machine spec pages publish no watts, no kWh and no cost. This number lives on a blog.
What manufacturers claim
Every figure in this table is uncheckable, by one test applied literally: a cost claim is checkable only if its publisher states both the assumed rate and the assumed cycle length, so a reader can reproduce the arithmetic. None of these do. They are recorded here because the claims are what a buyer meets first, not because they are usable. None of them feeds the calculator above.
| Who | Model | Claim | Rate stated? | Duration stated? | Verdict | Why | Source |
|---|---|---|---|---|---|---|---|
| Harvest Right | Small & Medium | $1.25–$2.80 per batch | No | No | Uncheckable | No rate, no duration. "Depending on local electricity rates" is not a rate. | blog, FAQ [5] |
| Harvest Right | Large | $2.00–$3.00 per batch | No | No | Uncheckable | No rate, no duration. | blog, FAQ [5] |
| Harvest Right | X-Large | $4.00 per batch | No | No | Uncheckable | No rate, no duration. | blog, FAQ [6] |
| Harvest Right | unspecified (2016) | $1.00–$2.80 per DAY | No | No | Uncheckable | The same $1.25–$2.80 figure has been published as "a day" in 2016 and 2023 and as "a batch" now. A per-day figure and a per-batch figure are not the same quantity. | blog (2016) [5] |
| Blue Alpine | generic | $2.00–$3.00 per day | No | No | Uncheckable | No rate. Per day, not per batch. | FAQ [7] |
| Blue Alpine | generic | $4–$8 per load | No | No | Uncheckable | Not electricity-only — the figure has bags folded into it here and pump oil folded into it in a second Blue Alpine source. It is not comparable to any kWh calculation. | FAQ [7] |
| Blue Alpine | Medium / Large | ~$2–4 / ~$3–6 per batch | No | No | Uncheckable | No rate. Cycle time is stated elsewhere in the article but not tied to the cost. | blog [8] |
| Prep4Life | The Cube | No number at all | No | No | Uncheckable | No number, no class definition, no comparison. Unfalsifiable as published — there is nothing here to check. | sales page [9] |
| University of Arizona Extension | generic | $1.50–$3.50 per cycle | No | No | Uncheckable | No rate. The page states "freeze drying usually takes 20-40 hours" but does not tie that duration to the cost. | extension publication [10] |
| Utah State University Extension | generic | $2–$5 per batch | No | No | Uncheckable | No rate, no duration. Described for Intermountain West consumers. | extension publication [11] |
The published cost-per-batch spread across all sources is roughly 10× — $1.25 to $15 — and it cannot be attributed to rate, machine or duration differences, because the inputs are not published.
Brands publishing no kWh figure at all
- Harvest Right: No kWh figure on any Harvest Right page checked. Amps, watts and dollars per batch only. [6]
- Blue Alpine: No kWh figure for any model under $5,000. kWh appears only for the out-of-scope $13,495 XL. [7]
- Prep4Life, VEVOR, SKYSHALO, KFFKFF, Lanphan: No kWh, no cost per batch. Lanphan’s power field reads "Confirm before quotation". [9]
The only two metered measurements anyone has published
Both are user-reported. No standardised protocol, no calibration statement, no lab and no third-party verification exists for either.
| Who measured | Machine | Meter | Measured | Their cost | Reproducible? | Caveat |
|---|---|---|---|---|---|---|
| Dennis Alexander, Common Sense Home [12] | Harvest Right medium (2016 machine) | unbranded power meter | 21 kWh per load | $1.90 per load | No — no rate stated | The rate is not stated anywhere in the article, so the $1.90 cannot be reproduced. Author notes his rates rise in summer. Measurements are from a 2016-era machine. |
| Drew Smith, Backpacking Light [13] | Harvest Right medium | Kill A Watt P3 | 20 kWh per run | $2.03 per run | Yes — rate stated | The rate is stated — $0.104/kWh, described as the national average in 2022 — which makes this the one reproducible metered report. That rate is badly stale against EIA’s 18.34¢ for June 2026. Author’s own caveat: "Power consumption varies with ambient temperature and load size." |
Both are user-reported, both are Harvest Right medium units, and they land close together — 21 kWh and 20 kWh. Neither was made on a 2026 model, on any other brand, or under a stated protocol. No metered data exists for Blue Alpine, Stay Fresh, The Cube, VEVOR, SKYSHALO, KFFKFF or Lanphan.
Four EIA numbers, three of which are the wrong one
Substituting the all-sector average for the residential one is the likeliest sourcing error in this topic, and the trap is on eia.gov itself. If you replace the prefilled rate with a figure you found elsewhere, check which of these it is.
| Figure | What it actually is | Period | Source |
|---|---|---|---|
| 18.34 ¢/kWh | US residential, monthly | June 2026 | [2] |
| 16.48 ¢/kWh | US residential, annual | 2024 | [3] |
| 16.5 ¢/kWh | the same annual figure, rounded in EIA prose | 2024 | [4] |
| 12.94 ¢/kWh | US ALL-SECTOR average retail price — not residential | 2024 | [15] |
What we could not source
- A checkable manufacturer energy cost claim, from any brand. Searched across every in-scope brand. Zero brands selling a home freeze dryer in the US under $5,000 publish a cost claim stating both the assumed rate and the assumed duration. This gap is the reason the calculator prefills a blog figure rather than a manufacturer figure. [6]
- Monthly state-level electricity rates from EIA. EIA publishes the monthly state breakdown only as Table 5.6.A, distributed as an .xlsx file. The table page confirms "Data for June 2026 / Release Date: August 26, 2026" but renders no numbers in HTML, and the spreadsheet could not be retrieved. Third-party pages carrying these figures were deliberately not used, and the annual table was not substituted for the monthly one. The state dropdown here is therefore annual 2024 data, labelled as such on every row. [14]
- The full 50-state annual table. EIA publishes all 50 states plus DC in Tables 2.10 and 4. Our research pack recorded the five highest, the five lowest, the next two in each direction, DC and the US total — the rows in the dropdown. A state that is missing is a rate we have not recorded, not a rate that does not exist. We did not interpolate the others. [3]
- Any standardised test method for this product category. No EnergyGuide label, no DOE test procedure and no ENERGY STAR specification exists for home freeze dryers. There is no regulator-defined method that would make one manufacturer’s figure comparable to another’s. [10]
- A cost figure conditioned on ambient temperature, from anyone. Harvest Right’s own manual states that ambient temperature nearly doubles cycle length — 24 hours at 75°F becoming "over 40 hours" — yet no brand publishes a cost figure conditioned on it. A number this tool produces is only as good as the cycle it assumes. [5]
Sources
- How much electricity does a freeze dryer use? (May 1 2024) — Stay Fresh Technology LLC (primary; accessed 2026-09-06)
- Electricity Monthly Update — Retail Service by Customer Sector — U.S. Energy Information Administration (primary; accessed 2026-09-06)
- Electric Power Annual, Table 2.10 — Average Price by End-Use Sector, by State, 2024 and 2023 — U.S. Energy Information Administration (primary; accessed 2026-09-06)
- Table 4 — 2024 Total Electric Industry, Average Retail Price (cents/kWh) — U.S. Energy Information Administration (primary; accessed 2026-09-06)
- How Much Does It Cost to Run a Freeze Dryer? (Jun 15 2026) — Harvest Right (primary; accessed 2026-09-06)
- FAQs — Harvest Right (primary; accessed 2026-09-06)
- FAQs — Blue Alpine LLC (primary; accessed 2026-09-06)
- Is a Freeze Dryer Worth It? Cost-Benefit Breakdown (Jul 07 2026) — Blue Alpine LLC (primary; accessed 2026-09-06)
- CUBE Home Freeze Dryer — landing page — Prep4Life (primary; accessed 2026-09-06)
- Basics of Home Freeze Drying, az2097a-2025 (Jan 2025) — University of Arizona Cooperative Extension (primary; accessed 2026-09-06)
- Buying a Home Freeze-Dryer: What to Know Before You Go (April 2019) — Utah State University Extension (primary; accessed 2026-09-06)
- Harvest Right Freeze Dryer — Cost Analysis and Optimization (pub. 2018-06-23, mod. 2024-12-10) — Common Sense Home (secondary; accessed 2026-09-06)
- Is Buying a Home Freeze-Dryer Worth the Money? (2022-09-21) — Backpacking Light (secondary; accessed 2026-09-06)
- Electric Power Monthly, Table 5.6.A — Average Price of Electricity to Ultimate Customers by End-Use Sector, by State — U.S. Energy Information Administration (primary; accessed 2026-09-06)
- US Electricity Profile 2024 (State Electricity Profiles) — U.S. Energy Information Administration (primary; accessed 2026-09-06)
Next
- Batch Log & Cost Tracker — log what your machine actually draws, instead of what a blog says it draws.
- Selling what you dry — where electricity sits among the costs that set a floor under your pricing.
- Comparisons — the machine decisions this number feeds into.