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Micro Cap Solar
Stocks Ranked by
Market Capitalization

Name Market cap Price Price
change %
TOYO
1
TOYO Co
TOYO
$199M
$199M $4.67 6.62%
TYGO icon
2
Tigo Energy
TYGO
$80.6M
$80.6M $1.05 0%
SPWR icon
3
SunPower Inc
SPWR
$61.4M
$61.4M $0.2942 2.98%
SPRU icon
4
Spruce Power Holding Corp
SPRU
$41.2M
$41.2M $2.14 11.5%
PN
5
PN Smart Energy Ltd
PN
$39.1M
$39.1M $2.65 0.75%
FTCI icon
6
FTC Solar
FTCI
$32.9M
$32.9M $1.99 6.57%
BEEM icon
7
Beam Global
BEEM
$30.2M
$30.2M $1.36 4.9%
ASTI icon
8
Ascent Solar Technologies
ASTI
$29.7M
$29.7M $3.03 0%
TURB
9
Turbo Energy
TURB
$13.8M
$13.8M $1.15 0%
SMXT icon
10
Solarmax Technology
SMXT
$13M
$13M $2.75 20.7%
ZEO
11
Zeo Energy
ZEO
$12.3M
$12.3M $0.2950 25.7%
SUNE
12
SUNation Energy
SUNE
$9.07M
$9.07M $2.20 0.45%

Micro Cap Solar Stocks at a Glance

Solar companies design, make, and install solar power systems and components. Demand rides falling equipment costs, energy policy, and utility procurement cycles, while module pricing and interest rates — which set project economics — drive the sharp swings.

There are 12 micro cap Solar stocks — companies in the Solar industry with a market cap under $250M — worth a combined $563M.

The largest by market cap are TOYO Co (TOYO) at $199M, Tigo Energy (TYGO) at $80.6M and SunPower Inc (SPWR) at $61.4M.

Among institutional investors, TOYO Co (TOYO) drew the most net new fund positions in Q2 2026: 41 funds opened new positions, taking total fund holders up 34 (243%) quarter-over-quarter.

  • Combined market cap: $563M across 12 stocks.
  • Micro Cap: market cap under $250M.
  • Largest constituent: TOYO Co (TOYO), $199M market cap.
  • Most net new fund positions in Q2 2026: TOYO Co (TOYO), +34 holders.

Market caps and prices updated daily; fund activity based on aggregated SEC 13F filings for Q2 2026.