What it costs to run a freeze dryer.

The short version: One published energy-cost figure in this category can be checked against its own inputs: Stay Fresh's 18.5 kWh over a 24-hour cycle at 18¢/kWh, or $3.33 [9]. Every other brand selling a home freeze dryer in the US under $5,000 publishes dollars per batch without stating the rate or the cycle length behind the number, so none of it can be reproduced [1][2][5]. Take your machine's kWh per cycle, multiply by your own utility rate, multiply by the cycles you actually run, and you have a figure the published ones cannot give you.

Why most published numbers can't be checked

The published cost-per-batch figures in this category span roughly ten times, from $1.25 to $15 [1][23]. That spread cannot be attributed to rate differences, machine differences, or cycle-length differences, because almost none of the sources publish those inputs.

Harvest Right's figure reads: "approximately $1.25–$2.80 per batch depending on local electricity rates" [1]. The sentence names the variable that governs the answer and then does not supply it. Applied literally, a cost figure is checkable only if the source states both the assumed ¢/kWh rate and the assumed cycle duration. Here is every published figure against that test.

Source	Published figure	Rate stated?	Duration stated?	Checkable?
Harvest Right, Small & Medium	$1.25–$2.80 per batch [1][2]	No	No	No
Harvest Right, Large	$2.00–$3.00 per batch [1][2]	No	No	No
Harvest Right, X-Large	$4.00 per batch [1][2]	No	No	No
Harvest Right, 2016	$1.00–$2.80 a day [3]	No	No	No
Blue Alpine FAQ	$2.00–$3.00 of electricity per day [5]	No	No	No
Blue Alpine FAQ	$4–$8 per load, and not electricity only; one page attaches bags [5], another attaches pump oil [7]	No	Partly	No
Blue Alpine blog	~$2–$4 per batch (Medium), ~$3–$6 (Large) [6]	No	Partly	No
Prep4Life, The Cube	970 W peak on the spec page [11]; on the sales page, "Most energy efficient freeze dryer in its class" with no figure, no class definition and no comparison [10]	No	No	No
VEVOR HFD-4	Rated power published as 1550 W in the spec table and 1500 W in a Q&A on the same page [12]	No	No	No
Lanphan	Power field reads "Confirm before quotation" for all three models [13]	—	—	No
University of Arizona Extension	$1.50 (small load) to $3.50 (large load) per cycle [15]	No	No	No
Utah State University Extension	$2–$5 of electricity per batch [14]	No	No	No
HomesteadingGear	$10–$15 for a 40-hour batch "at average US rates" [23]	No; "average US rates" is not a rate	Yes, 40 h	No
Green Thumb Depot	$0.50–$3.00 per cycle; rate given only as a $0.10–$0.30 range [25]	Range only	No	No
Havion (vendor blog, generic "Home Unit")	2 kW × 30 hours × $0.15/kWh = $9.00 per batch [24]	Yes	Yes	Arithmetic checks, but the unit is unbranded and unattributed to any machine sold here
Stay Fresh blog	18.5 kWh over 24 hours at 18¢/kWh = $3.33 [9]	Yes	Yes	Yes

Two further things are worth stating plainly. Harvest Right publishes no kWh figure on any page checked: amps, watts and dollars per batch only, and the owner's manual publishes no watts, no kWh and no cost [1][2][3][4]. And the units, as published, are not physical quantities: Harvest Right writes "watts per hour" [1], Blue Alpine writes "amps per hour" [5] and "roughly 72 Kilowatts per full load" [8]. Watts and amps are not per-hour quantities, and kilowatts are not an energy unit. Those are the publishers' words, recorded as written.

The one that can

Stay Fresh publishes a phase-by-phase calculation on its blog and states both inputs, which no other brand in the category does [9]. Its stated rate: "As of now the national average electricity rate is 18 cents per kwh" [9]. Its stated total: "18.5 kWh for a 24 hour freeze-drying cycle" [9].

Phase	Energy	Cost at 18¢/kWh
Freeze, chamber pre-chilled	0.5 kWh	$0.09
Main drying, about 16 hours	12 kWh	$2.16
Final drying, about 7 hours	6 kWh	$1.08
Full 24-hour cycle	18.5 kWh	$3.33, about 14 cents per hour

The arithmetic reproduces: 18.5 × $0.18 = $3.33. Four conditions travel with it. The calculation is generic rather than tied to a model number. It assumes a medium-sized unit with an 8 lb load. The article publishes the freeze phase as both "1-4 kWh" and "0.5 kWh", and the $3.33 total rests on the smaller of the two. And the rate is dated May 1, 2024, which is well below current published averages [9][16].

Two independent metered owner reports exist, both on Harvest Right medium units, and they land close together: "My average electrical usage is 21 kW-hours/load" [21] and "20 kWh per run seems like a good estimate" [22]. Only one states a rate, $0.104/kWh from 2022 [22]. At that rate 20 kWh comes to $2.08; the article publishes $2.03, so even the one reproducible report does not quite reconcile with itself [22]. The other reports $1.90 per load with no rate stated anywhere, which makes it arithmetic no reader can repeat [21]. Neither was measured on a 2026 machine, on any other brand, or under a stated protocol.

The formula

Three inputs, all of which you can get yourself:

• kWh per cycle — measured at the outlet with a plug-in energy meter. The 20 kWh figure above was taken with a Kill A Watt P3 [22].
• Your rate in dollars per kWh — from your own bill, not a national average. Divide your bill's total by the kWh delivered so that delivery charges and fixed fees land where they belong.
• Cycles per year — counted, not estimated.

kWh per cycle × $/kWh × cycles = what it costs you.

Worked with the only checkable published cycle and the most recent national figure: 18.5 kWh × $0.1834 = $3.39 per cycle [9][16]. Swap in your own two numbers and the answer stops being an estimate about somebody else's machine.

The same cycle at fourteen rates

The cycle is held constant at 18.5 kWh, the one checkable published figure [9], so that only the rate moves. Every rate below carries the period it covers and the date it was released, because two of these are different metrics that get used interchangeably.

Rate	¢/kWh	Period covered	Released	One 18.5 kWh cycle	50 cycles
US residential average, monthly [16]	18.34	June 2026	Aug 26, 2026	$3.39	$169.65
US residential average, annual [17][18]	16.48	2024 data year	Oct 16, 2025 (Table 2.10); Oct 7, 2025 (Table 4)	$3.05	$152.44
Hawaii [17][18]	42.86	2024 data year	Oct 16, 2025 / Oct 7, 2025	$7.93	$396.45
California [17][18]	31.97	2024 data year	Oct 16, 2025 / Oct 7, 2025	$5.91	$295.72
Massachusetts [17][18]	29.35	2024 data year	Oct 16, 2025 / Oct 7, 2025	$5.43	$271.49
Connecticut [17][18]	28.75	2024 data year	Oct 16, 2025 / Oct 7, 2025	$5.32	$265.94
Rhode Island [17][18]	28.65	2024 data year	Oct 16, 2025 / Oct 7, 2025	$5.30	$265.01
Washington [17][18]	11.90	2024 data year	Oct 16, 2025 / Oct 7, 2025	$2.20	$110.08
Louisiana [17][18]	11.73	2024 data year	Oct 16, 2025 / Oct 7, 2025	$2.17	$108.50
Nebraska [17][18]	11.53	2024 data year	Oct 16, 2025 / Oct 7, 2025	$2.13	$106.65
Idaho [17][18]	11.52	2024 data year	Oct 16, 2025 / Oct 7, 2025	$2.13	$106.56
North Dakota [17][18]	11.51	2024 data year	Oct 16, 2025 / Oct 7, 2025	$2.13	$106.47

Four points about the rates themselves.

• The June 2026 monthly figure and the 2024 annual figure are different metrics. 18.34 ¢/kWh is the US residential average for a single month, from EIA's monthly preliminary series, up 5.0% year on year [16]. 16.48 ¢/kWh is the residential annual average for the 2024 data year, carried by two EIA tables that agree to the cent [17][18]. Monthly residential prices are seasonal; a June figure is not an annual one.
• Do not use 12.94 ¢/kWh. That is the 2024 all-sector average retail price, which blends in commercial and industrial sales and is therefore lower [19]. It headlines a page on eia.gov, which is what makes it the easiest error to make here.
• EIA publishes these tables in census-division order, not rank order. The values above are EIA's; the high-to-low ordering is produced by sorting them. EIA does publish a ranking of its own, but of monthly bills rather than ¢/kWh: "Customers in Hawaii had the highest average monthly bills in 2024, at $213 per month" and "Customers in Utah had the lowest average monthly bills at $89 per month" [26]. Those two orderings are not the same.
• District of Columbia is a row in EIA's state tables, at 17.71 ¢/kWh for 2024, above the US average and in neither the top nor the bottom five, so counting it changes neither list [17][18].

What changes the number

The single largest published lever is the room the machine sits in. Harvest Right's owner's manual states it directly: "A batch that normally takes 24 hours to finish in a 75°F environment could take over 40 hours" [4]. A cycle that runs two-thirds longer costs roughly two-thirds more in electricity. No brand in this category publishes a cost figure conditioned on ambient temperature.

• Load size and moisture content. The one metered report that states its method also states its limit: "Power consumption varies with ambient temperature and load size" [22].
• Cycle length, which varies before you touch anything. Harvest Right publishes 13–35 hours for most foods [2]; Blue Alpine's FAQ says "your cycle time will sit around 26 hours" [5]; both extension publications say 20–40 hours [14][15]. The spread across published cycle lengths is larger than the spread across most state rates.
• Whether you pre-freeze. The Stay Fresh calculation charges the freeze phase at 0.5 kWh because the chamber is pre-chilled [9]. Freezing food in a separate freezer first does not remove that energy; it moves it onto a different line of the same bill.
• Season, and your utility's rate structure. The metered owner above notes paying about $1.90 per load "except in the summer time when my electrical rates go through the roof" [21]. Time-of-use and tiered rates are not captured by any national average.
• Electricity is not the whole per-batch cost. Blue Alpine's $4–$8 per load is explicitly not an electricity figure: one page attaches bags to it [5], another attaches pump oil [7].Consumables are a real per-batch line: pump oil where the machine takes it, and packaging on every batch.
• There is no common test method. No EnergyGuide label, DOE test procedure or ENERGY STAR specification exists for this product category, so no two manufacturer figures were produced under comparable conditions in the first place.

USU Extension records the one figure framed the way a household actually experiences the cost. An owner's "electricity bill went up $20 to $30 a month during her heavy usage time" [14]. It states no rate, no cycle count and no machine, so it is not reproducible either; it is included because it is the only published statement in monthly-bill terms.

What we could not source

• A checkable manufacturer cost claim, category-wide. Zero brands selling a home freeze dryer in the US under $5,000 publish a cost claim that states both its assumed ¢/kWh rate and its assumed cycle duration. The one checkable figure in this article comes from a brand blog, is generic rather than model-specific, and uses a May 2024 rate [9].
• Monthly state-level residential rates. EIA publishes these only in Table 5.6.A, distributed as a spreadsheet; the table page confirms data for June 2026 released August 26, 2026, but renders no numbers in HTML [20]. Third-party pages carrying those figures were deliberately not used, and the annual table was not substituted for the monthly one. The ten state rates in this article are annual 2024 figures and are labeled as such [17][18].
• Metered data for any brand other than Harvest Right. No forum post, blog, video, extension trial or published test was located for Blue Alpine, Stay Fresh, The Cube, VEVOR, SKYSHALO, KFFKFF or Lanphan.
• A university extension measurement. Neither extension publication contains one; both publish dollar ranges without a rate [14][15].
• An independent lab test. None exists in this category. The most-cited review site states its own method outright: "We do not test freeze dryers in a lab. Instead, we aggregate the collective experience of the homesteading community" [23].
• Per-model wattage from Stay Fresh. Its product pages publish a rated current only; the wattage and kWh figures used above live in a blog generalization for a "medium-sized" unit, not on a spec sheet tied to a model number [9].
• A published cost conditioned on ambient temperature, despite Harvest Right's own manual saying temperature nearly doubles cycle length [4].

Next

• Home freeze dryers compared — the machines these rates are applied to.
• Which home freeze dryer to buy — the purchase the running cost follows from.
• The economics of selling what you dry — the same cost, carried into a unit price.