North-Facing Balcony Solar: Does It Work in the US?

Can you use balcony solar on a north-facing balcony? You can, but a panel hung vertically on a north railing makes only about 9% to 16% of what a tilted south panel makes in US cities. North-facing balcony solar only starts to make sense when you can tilt the panel back toward the open sky, which lifts it to roughly 70% to 94% of a south panel, mostly in summer.

The numbers below come from my runs of the European Commission’s PVGIS calculator for an 800 W kit in Miami, Phoenix, New York City and Seattle. Our post on which direction a balcony solar panel should face compares all eight directions in New York City; this one goes deeper on north.

Why north-facing balcony solar works so poorly in the US

A north-facing panel in the US works poorly because the sun spends most of the year in the southern sky. The panel faces away from the sun and lives mostly on scattered sky light.

The sun’s path explains it. A Montana State University solar physics lesson says that at the summer solstice the sun “rises to the north of east and sets to the north of west.” In winter it rises south of east, sets south of west and sits at its lowest point in the southern sky. So a north wall sees direct sun only early and late on summer days, at a glancing angle.

The rest is diffuse light. The PVGIS methods page separates direct (beam) light from the solar disc and diffuse light scattered by the atmosphere. It notes that the diffuse component is always available, even under cloud. A third part, ground-reflected light, bounces off the ground and nearby objects.

How much of a north panel’s light is direct sun?

Direct sun makes up only about 7% to 17% of the light reaching a vertical north panel, in hourly PVGIS data for 11 weather years. A tilted south panel gets 62% to 78% of its light as direct sun.

City	Vertical north: direct	Diffuse	Ground-reflected	Tilted 35° south: direct
Miami, FL	11.5%	66.6%	21.9%	66.0%
Phoenix, AZ	17.1%	61.6%	21.4%	78.4%
New York City, NY	6.8%	72.3%	20.9%	62.3%
Seattle, WA	10.1%	69.6%	20.3%	63.5%

How this was made: PVGIS 5.2 hourly data (PVGIS-NSRDB, 2005 to 2015), with the split summed over all hours by my math. Diffuse light is weak. In New York City a vertical north panel received 311 kWh of light per square meter a year, against 1,693 kWh for a south panel tilted 35°.

How much power does a north-facing balcony panel make?

A north-facing balcony panel’s output depends far more on its tilt than on the city. Hung vertically, an 800 W kit made 133 to 194 kWh a year. Tilted back to 15°, it made 654 to 1,042 kWh.

City	Vertical north	North, 30°	North, 15°	Flat (0°)	Tilted 35° south
Miami	194 (15.7%)	836 (67.7%)	1,022 (82.8%)	1,159 (93.9%)	1,235
Phoenix	133 (9.2%)	788 (54.5%)	1,042 (72.1%)	1,255 (86.8%)	1,446
New York City	161 (15.0%)	594 (55.3%)	753 (70.1%)	909 (84.7%)	1,074
Seattle	141 (15.1%)	518 (55.6%)	654 (70.2%)	786 (84.4%)	931

Yearly kWh for 800 W of panels and a 14% system loss, run on October 29, 2026. Percentages are of the tilted south panel, by my math.

Every step toward flat helps. A flat panel has no direction, so it beats any north tilt. In New York City it made 5.6 times the vertical north output.
The South gains most from going flat. Miami’s 15° north panel kept 82.8% of south output, against about 70% in New York City and Seattle.
Sunny Phoenix is worst on a north railing. Its vertical north panel kept just 9.2%, since its clear skies give less diffuse light to work with.

Summer vs winter: when a north panel makes its power

A north-facing panel makes most of its power in summer and very little in winter. That’s the opposite of a vertical south railing, which does its best work in the cold months.

In New York City, month by month (kWh):

Panel	Jan	Mar	May	Jun	Jul	Sep	Nov	Dec
Vertical north	6	12	22	27	26	11	5	4
North, 15°	20	62	103	104	109	66	22	15
Tilted 35° south	69	98	106	100	108	94	69	60

By season, across the four cities:

City	North 15°, May-Aug	North 15°, Nov-Feb	South 35°, May-Aug	South 35°, Nov-Feb
Miami	459	207	402	402
Phoenix	520	160	490	441
New York City	408	91	419	278
Seattle	409	45	451	158

The southern surprise: from May to August, a 15° north panel beat the tilted south panel in Miami and Phoenix. In June it made 112 kWh against 92 in Miami, and 141 against 123 in Phoenix. New York City’s north panel also edged ahead in June, at 104 against 100. Winter is where north loses: in December, Seattle’s 15° north panel made 7 kWh against 31.

The summer bias has one upside: if you run air conditioning on summer afternoons, more of a north panel’s output lands while you’re using power.

Your options on a north-facing balcony

A north-facing balcony leaves you five realistic options, from tilting the panel back to skipping solar. The building itself blocks the southern sky, so you can’t usefully turn a panel to face south from a north balcony.

Tilt the panel back toward the sky. A floor stand that leans the panel back to about 15° turns it skyward, away from the north horizon. In New York City that took output from 161 to 753 kWh. It only works if nothing overhangs the spot: PVGIS can’t model shadows from nearby buildings, so a balcony slab above you cuts these numbers.
Lay it flat or nearly flat. On a top-floor balcony or roof deck with open sky, flat made 84% to 94% of a tilted south panel.
Move it to a side wall. A north balcony’s side walls face east and west. A vertical east panel made 3.0 to 5.2 times the vertical north output across the four cities, by my math. Side walls are short and shaded by the building for part of the day, so check them at different hours first.
Buy bifacial. By my math, NREL’s 4% to 8% fixed-tilt bifacial gain on a vertical north panel in New York City adds about 6 to 13 kWh a year. That’s an upper bound, because the back faces your own wall. Our monocrystalline vs bifacial guide explains why the gain is small on a balcony.
Skip it. If the only spot is a vertical railing under another balcony, the math below says the money is better kept.

Any stand has to stay put in wind, so check the clamps and ballast your railing or floor can take before you buy.

By my math: payback on a north-facing balcony

A north-facing balcony kit pays back in about 6 to 16 years tilted low or flat, but 32 to 75 years hung vertically. I used the $1,499 price for an 800 W kit from Canary Media and August 2026 residential prices from the U.S. Energy Information Administration.

City (state price, cents/kWh)	Vertical north: savings, payback	North 15°: savings, payback	Flat: savings, payback
Miami (FL, 14.99)	$29 a year, 51.5 years	$153, 9.8 years	$174, 8.6 years
Phoenix (AZ, 15.05)	$20, 75.1 years	$157, 9.6 years	$189, 7.9 years
New York City (NY, 28.65)	$46, 32.4 years	$216, 6.9 years	$260, 5.8 years
Seattle (WA, 14.63)	$21, 72.7 years	$96, 15.7 years	$115, 13.0 years

This is a best case: it assumes you use every kWh at home, since exported power usually earns nothing. For context, EnergySage says you’d likely need to replace a plug-in system within 25 years. Every vertical north payback above runs past that. For prices beyond one kit, see how much balcony solar costs.

A real example: a renter in a New York City apartment with a north-facing railing. Hung vertically, the kit saves about $46 a year at New York’s 28.65 cents. If the same renter lives on the top floor and can set the panels on a low stand under open sky, the 15° setup saves about $216 a year and pays back in under 7 years.

For your own numbers, our balcony solar calculator takes your sun hours, price and the share you use at home. Treat its result as an upper estimate, since it runs 9-16% above PVGIS, and it doesn’t ask for a direction.

The verdict: is north-facing balcony solar worth it?

North-facing balcony solar is not worth it on a vertical railing anywhere in the US, but it can be worth it tilted low under open sky. The direction matters less than whether the panel can see the sky overhead.

Your north balcony	Verdict
Panel can only hang vertically on the railing	Skip it
Balcony above you shades the floor	Skip it, or try a side wall
Open sky, room for a stand at about 15°	Worth a look, best in high-price or southern states
Top-floor balcony or roof deck, can lay it near flat	Close to a south setup in yearly kWh

My take: if your only spot is a north railing, keep your $1,499. Even New York City’s high price can’t rescue 161 kWh a year. If you have a roof deck or open top-floor balcony, I’d treat it as a near-flat site rather than a north-facing one, and buy the kit. Before you do, read whether balcony solar is worth it for the checks that apply to every home.

The limits of these numbers

These PVGIS results assume open sky and a clear horizon around the panel. The PVGIS methods page says it can’t account for shadows from nearby objects such as houses or trees. A north balcony usually has the building behind it and often a balcony above, so treat the tilted and flat figures as a ceiling.

The payback also assumes you use all the power at home and that August 2026 prices hold. Your kit’s app will tell you the truth within a few weeks of summer.

FAQ

Does a north-facing balcony get any sun?

Only a little direct sun, and only in summer. From spring to early fall the sun rises north of east and sets north of west, so a north wall catches early morning and late evening light. In winter the sun stays in the southern sky. Most of the light a north panel gets is diffuse sky light.

Can north-facing solar panels work?

They work, but how well depends on tilt. In PVGIS runs, an 800 W panel hung vertically facing north made only 9% to 16% of a tilted south panel’s yearly output in four US cities. Tilted back to 15 degrees under open sky, it made 70% to 83%.

Is a north-facing balcony good for solar panels?

Not for a panel hung on the railing. By my math, a vertical north kit at $1,499 takes 32 to 75 years to pay back, even if you use every kWh. A top-floor balcony or roof deck where you can lay the panel nearly flat is a different story.

Do bifacial panels help on a north-facing balcony?

Barely. Applying NREL’s 4% to 8% fixed-tilt bifacial gain to a vertical north panel in New York City adds about 6 to 13 kWh a year, by my math. That’s an upper bound, since the back of the panel faces your own wall.

Can I Use Balcony Solar on a North-Facing Balcony?