SolarWindow Technologies (WNDW) Stock Analysis & Winston Score

SolarWindow Technologies is a small American company trying to develop transparent coatings that can turn ordinary glass windows into electricity generators. The idea is that buildings could produce solar power from their windows without replacing them with traditional solar panels. Their main target customers would be commercial real estate owners and building developers looking for new ways to generate clean energy.

The company has not yet generated meaningful revenue and is still in the research and development stage, which explains its deeply negative margins. It operates primarily in the United States and remains a pre-commercial business, meaning it has no established moat yet. The central risk is that SolarWindow has been developing its technology for many years without reaching commercial production, and it continues to burn through cash while competing against mature solar panel makers and other emerging transparent solar technologies.

Winston Score History

Growth Profile

For growth stock investors

When traditional metrics don't capture the full picture, these are the signals growth stock investors use instead.

Revenue Growth

Revenue data limited

EPS Growth

+26.8% YoY

YoY Growth Rate

EPS growth accelerating

Insider Activity

67.5%ownership

→ Flat

Insiders holding steady — not selling despite ability to

Cash Runway

~3 years

$5M cash & investments

Quarterly Free Cash Flow

→ Burn rate stable

$5M cash & investments at current burn rate

The Winston Score above measures business quality today. Growth stocks often score lower because they invest in the future rather than maximising current profits. These metrics show what matters most for evaluating that future.

Score breakdown

Every number that matters to educated investors.

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Quality

Gross Margin

N/A

Data not available

Operating Margin

N/A

Data not available

ROCE

-11.8%

Weak — -11.8% return on capital

Negative ROIC means the business is losing money on every dollar invested in it.

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Growth

Sales YoY

-44.7%

Shrinking sales (-44.7% YoY)

EPS YoY

N/A

—

Data not available

EPS Consistency

0/8 quarters

Earnings rarely grow — volatile business

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Cash Flow

Cash Conversion

N/A

—

Data not available

FCF Margin

-14902.2%

Burning cash (-14902.2%)

Free cash flow is negative. They are burning cash, not generating it.

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Stability

Debt / Equity

N/A

Data not available

Interest Cover

N/A

—

Data not available

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Valuation

P/E Ratio (TTM)

N/M

no trend

Negative earnings — P/E not meaningful

P/E vs Forward

N/A

not available

Data not available

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Dividends

Not applicable for this business.

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