Could Energy Prices Raise the Cost of Keeping a Bearded Dragon? A Safe-Savings Checklist

Updated September 24, 2026. Every figure below was read that day from the government, veterinary and manufacturer references listed at the end. This article quotes no retailer price and no store rating; equipment costs are discussed only as published wattages and category ranges.

A wild central bearded dragon basking in Australia. This photo illustrates natural basking behavior; it is not an enclosure setup guide. Photo: Ron Knight / Wikimedia Commons, licensed CC BY 2.0.

Heating and lighting a bearded dragon is a fixed monthly draw on a household meter, and it is the one running cost in reptile keeping that a new keeper can actually calculate in advance instead of guessing at. It is also the cost most often cut first when a bill goes up — which is exactly where the first two months of keeping go wrong. This post does the arithmetic, then marks which lines are safe to touch.

What the enclosure actually draws, hour by hour

Start from published equipment specifications rather than from a number somebody remembers. Zoo Med lists its Repti Basking Spot Lamp in eight wattages — 25, 40, 50, 75, 100, 125, 150 and 250 W — and names bearded dragons among the basking species it is intended for. Its ReptiSun 5.0 UVB T5 HO linear lamp comes in four lengths with fixed wattages: 12″ at 15 W, 22″ at 24 W, 34″ at 39 W and 46″ at 54 W.

The hours come from the veterinary side. The Merck Veterinary Manual puts a general maintenance photoperiod at about 12 hours a day, with basking temperatures around 5 °C above ambient during the day and a 5 °C drop at night. For a bearded dragon it gives a preferred optimal temperature zone of 25–32 °C (77–90 °F) and humidity of 20–30%.

That gives a defensible baseline for a common mid-size adult setup: a 100 W basking lamp and a 24 W UVB tube, both on a 12-hour cycle, plus a 60 W ceramic heat emitter on the nights when the room itself falls below the bottom of the zone.

Turning watt-hours into a bill

The US Department of Energy publishes the formula, and it is deliberately simple: (wattage × hours used per day ÷ 1,000) = kilowatt-hours per day, then multiply by the rate. Applied to the baseline above:

• Basking lamp: 100 W × 12 h ÷ 1,000 = 1.20 kWh/day → 36.0 kWh in a 30-day month
• UVB tube: 24 W × 12 h ÷ 1,000 = 0.288 kWh/day → 8.64 kWh/month
• Night ceramic emitter: 60 W × 12 h ÷ 1,000 = 0.72 kWh/day → 21.6 kWh/month

So a daytime-only month is 44.64 kWh, and a month where the night heat also runs is 66.24 kWh.

Three households, the same dragon

The EIA’s 2025 annual averages put residential electricity at 17.30¢/kWh nationally, with North Dakota lowest at 8.20¢ and Hawaii highest at 35.72¢. The same enclosure therefore costs very different amounts depending only on the meter it is plugged into:

Rate (2025 annual avg, residential)	Daytime-only month 44.64 kWh	Month with night heat 66.24 kWh	Year (7 warm + 5 cold months)
North Dakota, 8.20¢	$3.66	$5.43	$52.77
US average, 17.30¢	$7.72	$11.46	$111.34
Hawaii, 35.72¢	$15.95	$23.66	$229.95

Calculated from the wattages and hours above at the stated EIA rates. Figures are an upper bound: a lamp on a dimming or pulse-proportional thermostat does not draw full wattage for the whole 12 hours, and the EIA number is an average across all residential customers in a state, not any one household’s marginal rate or tier. Taxes, fixed monthly charges and time-of-use pricing are excluded.

Two things fall out of that table. First, the national-average answer is somewhere between the cost of a streaming subscription and the cost of two. Second, the spread between the cheapest and most expensive state is more than four to one — so advice written for one of those households is close to meaningless for the other.

The lines that are not negotiable, and the document that says so

Before looking for savings it is worth being precise about what the veterinary reference actually requires, because these are the items that get cut first and cost the most to get wrong:

• The temperature zone itself. 25–32 °C (77–90 °F) for a bearded dragon, with a basking area about 5 °C warmer. A gradient is the point; a single warm spot in a cold box is not the same thing.
• UVB, at the right distance. Merck specifies fluorescent UVB placed within 30 cm (12 in) of the animal. Moving a lamp further away to cover a bigger area does not stretch the output; it removes it.
• Lamp replacement on a calendar. Fluorescent UVB tubes are to be replaced every 9–12 months, mercury vapour bulbs every 12. A tube that still lights is not evidence that it still emits UVB, which is why this is a scheduled cost rather than a failure-triggered one.
• The photoperiod. About 12 hours a day. Shortening the lights to save power changes the animal’s seasonal signalling, not just the bill.

The consumable nobody budgets for

At the published 9–12 month interval, a keeper buys between one and 1.33 UVB tubes a year, every year, for the life of the animal. It never appears in a monthly electricity estimate because it is not electricity — and it is the single most common thing a first-year keeper forgets entirely. Zoo Med sells its T5 HO tubes in four lengths, so the recurring item is fixed by the enclosure the keeper already bought; the decision was made at setup, not at replacement time.

The honest way to carry this is to add a twelfth of one tube to every month’s mental figure and to write the install date on the tube in marker. Prices vary by retailer and by length and are deliberately not quoted here; the point is the interval, not the receipt.

Where the savings actually are

1. Insulate the room, not the animal. The night emitter is the seasonal line item in the table above, and it runs because the room is cold. Raising the ambient room temperature by a few degrees removes hours from the emitter without touching a single husbandry setting.
2. Put the heat on a thermostat. A dimming or pulse thermostat holds the target temperature and cuts the duty cycle, which is the difference between the upper-bound figures above and the real ones. It also removes the temptation to run a lamp cooler than it should be.
3. Size the lamp to the enclosure. An oversized bulb fighting a thermostat wastes the difference. Zoo Med’s eight wattages exist for a reason; the right one is whichever hits the target basking temperature with the fixture at its intended height.
4. Stop heating empty space. A lamp aimed at a basking platform does a smaller job than one trying to heat an entire tall enclosure. That is a layout decision, not a power decision.
5. Leave the UVB alone. At 24 W it is 19% of the daytime draw in the baseline above and roughly $1.49 a month at the national average. It is the cheapest thing in the enclosure and the most expensive thing to get wrong.

Why this becomes a health question in the first sixty days

The reason this post is a husbandry post and not a budgeting post is the specific way cost-cutting shows up in a new keeper’s first two months. The animal does not present a bill; it presents behaviour, and the behaviour reads as normal.

Merck’s account of nutritional secondary hyperparathyroidism — the metabolic bone disease that UVB and calcium management exist to prevent — describes it as most common in rapidly growing insectivorous and herbivorous lizards, with insufficient UVB among the contributing factors, and a progression that starts with anorexia and lethargy before it ever reaches visible skeletal change. A cooled enclosure produces a similar opening picture: a dragon that eats less and moves less.

Both look, to somebody two months into keeping, like an animal settling down or going into a seasonal slowdown. That is the trap. The cheapest insurance against it is not a bigger budget; it is a thermometer log, because a temperature trend distinguishes a husbandry problem from a seasonal one and a vague impression does not.

What the numbers support if the bill is the real problem

On the national-average rate, the whole enclosure is roughly $7.72 a month in daylight and about $111 a year including winter nights. If a household is at the Hawaii end of the range, it is $230 a year and the conversation is different — but the answer is still room insulation, thermostat control and lamp sizing, in that order, because those are the three levers that reduce consumption without moving any published husbandry value. If those have been pulled and the figure is still not affordable, that is a real answer about whether this is the right time for this animal, and it is a better answer than a slowly cooling enclosure.

The broader energy-price headlines matter here only through one number: the rate on the bill. Whatever moves that rate, the calculation above does not change — substitute the household’s own cents-per-kWh figure from the bill, which will be more accurate than any state average.

Tip: The one purchase that both lowers the duty cycle in the table above and protects the temperature zone is a controller for the heat source. A reptile thermostat and temperature controller does both jobs. (These are Amazon Associate links — we may earn a small commission on qualifying purchases.)

A monthly check that costs nothing

1. Read the basking surface and the cool end with a probe; write both down with the date.
2. Check the night low on the coldest night of the month.
3. Confirm the UVB lamp is still within 30 cm (12 in) of where the animal actually sits.
4. Check the tube’s install date against the 9–12 month window.
5. Take the cents-per-kWh figure off the current bill and redo the three multiplications above with it.
6. Note appetite and activity next to the temperatures, so a trend has something to sit against.

Further reading on the enclosure itself

• Building a safe bioactive bearded dragon tank — how enclosure design changes what the heat source has to do.
• A safe DIY basking platform for bearded dragons — getting the animal closer to the lamp instead of turning the lamp up.
• What a bearded dragon actually needs at feeding time — the other half of the metabolic bone disease picture.

What each figure is based on

• US Energy Information Administration — Electricity prices and factors affecting prices: 2025 annual average residential price 17.30¢/kWh; commercial 13.41¢; industrial 8.62¢; Hawaii highest at 35.72¢ and North Dakota lowest at 8.20¢.
• US Department of Energy — Estimating appliance and home electronic energy use: the wattage × hours ÷ 1,000 formula used for every kWh figure above.
• Zoo Med — Repti Basking Spot Lamp: available in 25, 40, 50, 75, 100, 125, 150 and 250 W; ceramic socket required; intended for basking species including bearded dragons.
• Zoo Med — ReptiSun 5.0 UVB T5 HO linear lamp: 12″/15 W, 22″/24 W, 34″/39 W, 46″/54 W.
• Merck Veterinary Manual — Management of Reptiles: bearded dragon POTZ 25–32 °C (77–90 °F); humidity 20–30%; basking 5 °C above ambient and night 5 °C below; 12-hour photoperiod; fluorescent UVB within 30 cm (12 in), replaced every 9–12 months and mercury vapour every 12.
• Merck Veterinary Manual — Nutritional, metabolic and endocrine diseases of reptiles: nutritional secondary hyperparathyroidism most common in rapidly growing insectivorous and herbivorous lizards, insufficient UVB among contributing factors, early signs anorexia and lethargy.
• Association of Reptilian and Amphibian Veterinarians: directory for locating a veterinarian experienced with reptiles.

This article summarises publicly available government, veterinary and manufacturer references. It is general husbandry and household-cost information, not veterinary advice for any individual animal and not personalised financial advice. A reptile that is eating less, moving less or showing changes in posture or gait should be seen by a veterinarian experienced with reptiles. Electricity rates, tariffs and reptile-keeping rules all vary by jurisdiction and change over time.