55% of Solar and Storage Companies Currently Collaborate with External Partners
A survey by Kokusai Kogyo (Tokyo, Japan) published on Nov 14, 2025:
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Among 110 respondents (construction, wholesale/retail, real estate):
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55.4% currently collaborate with external companies.
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25.5% previously collaborated but no longer do.
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In total, 80.9% have had some collaboration experience.
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8.2% considered collaboration but have not implemented it; 10.9% have never considered it.
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Purpose of collaboration:
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58.4%: Need to respond to proposals and increase sales for existing customers.
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37.1%: Expand products and sales areas.
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33.7%: Address efficiency issues in direct-to-home sales.
Important factors in choosing partners:
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46.1%: Clear customer feedback and reporting processes.
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44.9%: Training and certification systems for sales representatives.
Reasons for not collaborating:
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33.3%: No specific benefits perceived.
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28.6%: Lack of information to assess partner reliability.
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23.8%: Undefined responsibilities in case of issues.
Future plans and conditions for successful collaboration:
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23.6% want to expand further, 31.8% are considering if necessary, 35.6% maintain the status quo.
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Success conditions: 49.1% require standardized customer service progress reporting, 40.9% require sales representative training, 34.5% require clear contract rules and profit allocation.
Conclusion:
Collaboration with external partners is becoming a key trend in the solar and storage industry, with priorities on sales efficiency, market expansion, and transparent management systems.
