“I have no power…what if my breast milk defrosts?”
I used to have moments of anxiety about this, and I know I’m not alone. Natural disasters like thunderstorms, flash floods, snowstorms, hurricanes, and tornadoes are sometimes hard to predict and hard to prepare for! One of our mamas told me she dreamt that they were in a tornado and had to evacuate their home, and she just kept yelling “grab the breast milk!” “I can’t leave without my milk!” and woke up in a cold sweat. We work so hard to build our freezer stash, and the thought of an act of nature destroying turning our liquid gold sour...well, it is the stuff of nightmares for many mothers.
Preventing your milk from defrosting:
1) Keep that freezer door shut! Don’t open it unless you absolutely have to. According to the FDA, a full freezer will hold its temperature for up to 48 hours if the door remains closed (up to 24 hours if it’s half full). Best practice is always to keep your milk in the back of the freezer where it is the coldest. This will help it stay maximally cold in general, and frozen longer in an outage. If your freezer isn't full, you can always fill it with ice packs, containers of water, or in a pinch...even snow!
2) Ask for help. if it's safe, you can ask a friend, family member, neighbor for help. Even the neighborhood corner store may be able to keep your milk frozen until your power is restored.
3) Use a generator. If possible, purchase a generator to buy you some time in the event of an outage. A portable generator can be used to run large appliances temporarily. Most homeowners will use a generator somewhere between 3000 and 6500 watt capacity. A large refrigerator/freezer uses about 780 watts, so if you aren’t planning to run anything else off of it, you can get by with a smaller generator and lessen the expense. If you live in an area prone to outages, or if you regularly experience prolonged outages, you may consider investing in a whole-house generator instead. Contact a local electrician to discuss your options!
4) Use a cooler. If you have a cooler, pack it as full as possible, insulating any air space with ice packs or crumpled paper, or snow if you have it. The less open space, the colder it will stay. Wrap the cooler in blankets for added insulation.
5) Bury it in the snow! This should be an absolute last resort, but if your temperatures are consistently below freezing, you can bury your milk under the snow. The key here is to keep it covered, completely out of the sun (even if temps are low, direct sun can thaw it), and sealed tightly (double ziploc freezer bags at least) to prevent leakage and keep animals from finding it. **This practice is NOT recommended by the FDA, due to variables like inconsistent temperatures, sanitation, and animal concerns. It should only be used if all other methods fail or are unavailable.**
When the power comes back:
Once power is restored and you can survey the situation, inspect your milk. You may have heard that if it still contains ice crystals, you can refreeze it. But first, there are a couple things to consider before refreezing:
- How sanitary were the conditions under which it was originally pumped?
Be honest with yourself! Did you wash your hands before pumping? Did anyone else handle the pump parts or bags? Did you set the pieces on a counter that wasn’t sanitized first? While these things may not seem like a big deal at the time, the more bacteria present in your milk when it was pumped, the faster they will reproduce when it’s thawed.
- How long has the milk been frozen? Was it in a deep freeze or regular freezer? In the front or back? Again, bacteria reproduction is the concern here. Freezing does not stop bacterial growth, it just slows it down. The lower the temperature the slower it happens.
The CDC says that you can refreeze thawed milk if it contains ice crystals. However, given the factors mentioned above, if you have any concerns you can always strain the ice crystals and refreeze those, and use the thawed milk according to these milk storage guidelines (LINK). Or label it “undrinkable” and refreeze for milk baths later.
Please don’t just dump your milk! It still has wonderful soothing properties for the skin.
See our article: 👉 What To Do With Expired Or Undrinkable Breast Milk
Do you need to pump but the power is out?
Convert your electric pump to manual mode. Some electric pumps have this ability- check your instruction manual or search the internet for how to do this!
Use a hand pump or hand express your milk. It takes more effort, but can help maintain your supply and prevent clogged ducts/mastitis! If you need a tutorial on hand expression, click HERE.
Pump in the car! Use a power inverter or car adapter to pump in the car or charge your battery pack.
Here are the official statements on refreezing from our most trusted resources:
American Academy of Breastfeeding Medicine: There is little information on refreezing thawed human milk. Bacterial growth and loss of antibacterial activity in thawed milk will vary depending on the technique of milk thawing, duration of the thaw, and the amount of bacteria in the milk at the time of expression. At this time no recommendations can be made on the refreezing of thawed human milk.
CDC: Frozen breast milk that has started to thaw, but still contains ice crystals can be refrozen. Thawed breast milk should not be refrozen.
If you have a different scenario and aren’t sure what to do, or if you have questions about your stored breast milk, please reach out. Call or text us at 512-765-9959, email firstname.lastname@example.org, or DM on our social media channels. We are here for you!
Academy of Breastfeeding Medicine. (2017) Clinical Protocol Number #8: Human Milk Storage Information for Home Use for Healthy Full Term Infants
***The information provided on our website is intended solely for general educational and informational purposes only. It is neither intended nor implied to be a substitute for professional medical advice. Always seek the advice of your physician for any questions you may have regarding your or your child’s medical condition. Never disregard professional medical advice or delay in seeking it because of something you have received in this information.***