I Tested A Portable Wind Turbine For 2 Years: Why It's My Backup, Not A Solar Replacement

Adrian Kingsley-Hughes/ZDNET

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ZDNET's cardinal takeaways

• Solar is becoming accessible, pinch star generators and plug-in systems.
• Wind turbines are still waiting for nan aforesaid gyration that star has seen.
• However, pinch realistic expectations, I've managed to make star work.

Solar powerfulness generation is becoming progressively common. From small star panels that cod a fewer 100 watts for off-grid usage to larger setups that tin screen a important information of your household's powerfulness needs, star power has proven incredibly versatile.

Also: Most star powerfulness banks I've tested were gimmicks - this 1 is nan existent deal

Now, pinch nan emergence of "plug-in solar" systems, star powerfulness is much accessible than ever. These systems tin beryllium installed connected balconies, decks, aliases backyards successful nether an hour. They are peculiarly appealing to renters, arsenic they supply a speedy and easy measurement to harness cleanable power without requiring imperishable installations.

What astir upwind power?

So, you're harvesting star energy, but what astir wind?

Also: The champion portable powerfulness stations of 2026: Expert and laboratory tested

Wind power presents a wholly different challenge. Unlike nan sun, which is predictable and consistent, upwind is acold much unpredictable. There are tools, specified arsenic The Photographer's Ephemeris (iOS), Lumos (iOS), aliases Sun Locator (Android), that tin thief you way nan sun's position astatine immoderate clip aliases time of nan year. 

However, you can't trust connected these devices to show wind. 

Even if there's a prevailing upwind guidance successful your area (determined by world atmospheric circulation), section factors, including upwind conditions, topography, trees, walls, buildings, and bushes, tin importantly effect upwind patterns. Sometimes obstacles artifact nan wind, different times they chimney and amplify it. 

The unpredictable quality of wind

To illustrate, I knowledgeable this rumor connected my locomotion today: I stood successful 1 spot enjoying nan greeting sun pinch nary upwind astatine all, but conscionable a fewer feet away, I recovered myself successful a beardown breeze. Unlike sunlight, which is visible and measurable, upwind is invisible, and nan only reliable measurement to measure conditions is pinch an anemometer.

Also: I tested a solid-state powerfulness slope that's earnestly durable, but 2 things clasp maine back

If you're superior astir measuring wind, you could put successful a high-end instrumentality for illustration a Kestrel unit, but for astir people, a $12 anemometer will activity conscionable fine.

Portable upwind turbines

The upwind turbine I've been utilizing is called nan Shine. 

The Shine had humble specs, but it's lasted maine a mates of years.

Adrian Kingsley-Hughes/ZDNET

It's fundamentally a powerfulness slope pinch a turbine attached, akin to power banks pinch star panels attached. Since this kit is designed to output USB voltages, it's not compatible pinch powerfulness stations owed to voltage mismatches and debased powerfulness outputs. Instead, I person nan kit connected to a power bank, and while nan slope doesn't make a immense magnitude of power, nan harvesting is free erstwhile you've made nan first investment.

Unfortunately, nan Shine exemplary I'm utilizing is nary longer available, but nan institution has announced a pre-order for an upgraded 2.0 version. While I haven't tested this caller version, 1 important betterment is nan expertise to output 12V power, which would let nan caller type to apical up powerfulness stations aliases batteries (forget old-school lead-acid batteries because caller Li-ion batteries are now each nan rage, albeit pricey). However, pinch a 50W powerfulness output, this setup is still comparatively small-scale.

Forget lead-acid batteries, Li-ion is now nan measurement to go.

Adrian Kingsley-Hughes/ZDNET

Challenges and limitations

Scaling upwind turbines while keeping them portable is simply a challenge. 

Larger turbines, often weighing 15 pounds aliases more, require imperishable attachment points. These larger systems are usually designed for homes aliases marine usage and tin link to power stations aliases 12V batteries. However, this setup moves good beyond nan realm of portable solutions.

Also: 10 useful cables and connectors I usage mundane (and they're affordably priced)

These larger systems do activity and tin output importantly much power. However, return nan ratings successful income lit pinch a pinch of salt. For example, a 1,200W-rated turbine will realistically connection astir 800W nether wide conditions.

How overmuch powerfulness tin you harvest?

The reply to this mobility is, it depends.

Let's return a turbine that tin output an mean of 800W. If we see that the mean US location uses astir 30kWh of powerfulness per day, and you get 800W from a turbine for 4 hours a time (factoring successful ratio losses), you're looking astatine covering astir 3kWh of usage.

Also: The hidden metric that makes these portable powerfulness stations genuinely worthy your money

To put that number into perspective, 3kWh is capable powerfulness to tally a refrigerator for an full day.

Smaller systems, however, can't travel adjacent to this output. For example, my Shine turbine tin output astir 40W. Over 4 hours, and accounting for losses, that's only 0.1kWh. But complete a full day, you could get adjacent to 1kWh. While this output isn't capable for ample workloads, it's cleanable for charging devices for illustration powerfulness banks.

Also: How my portable upwind turbine compares to star panels - 2 years of testing later

The much upwind you have, nan amended your energy-harvesting potential.

But comparison that output to this star generator strategy (below) pinch a whopping 1,200W of star panels that leaves upwind turbines successful its dust.

It really is difficult to hit nan easiness of star panels.

Adrian Kingsley-Hughes/ZDNET

Improving upwind turbine efficiency

I've made immoderate modifications to my turbine to maximize its efficiency. Here are my apical tips:

1. Check positioning: Get your anemometer out. Even mini adjustments -- moving nan turbine a fewer feet broadside to broadside aliases up/down -- tin make a difference.
2. Keep nan blades clean: Regular cleaning (and moreover polishing) of nan blades tin consequence successful a measurable betterment successful upwind turbine powerfulness output.
3. Upgrade nan mounting system: The tripod that came pinch nan Shine is awesome for portability, but it suffers from vibration issues. For location and off-grid use, I created imperishable mounting points for nan turbine. I besides built a clamp to connect nan turbine to obstruction posts, which improved capacity by astir 15%. (Unfortunately, I've misplaced nan clamp and request to build a caller one.)

Even a mini magnitude of dirt, for illustration this, tin impact nan turbine's performance.

Adrian Kingsley-Hughes/ZDNET

Final thoughts

While star powerfulness is predictable and straightforward, upwind power is acold much analyzable and varies based connected section conditions. However, pinch nan correct devices and a spot of ingenuity, it's imaginable to harness some forms of renewable power to create a much sustainable and self-sufficient lifestyle.

You do request to deliberation beyond simply plugging everything into an AC outlet. Whether it's star panels connected your pavilion aliases a portable upwind turbine successful your backyard, each measurement toward cleanable power makes a difference.