The effectiveness of national energy transitions increasingly depends on public support for state-led measures; yet little is known about societal expectations regarding government assistance for renewable energy-oriented businesses. This study examines public expectations regarding state support for renewable-energy-oriented enterprises in Poland. Using a nationwide survey of 1000 adults (N = 974 valid responses), we developed a latent construct measuring attitudes toward pro-RES business policies. Overall public support is high (M = 3.73; median = 3.86). Women express significantly stronger support than men (median 3.86 vs. 3.71), and Baby Boomers score higher than younger generations (median 4.00 vs. 3.57–3.71). The most notable differences relate to respondents’ experience with RES: Individuals already using renewable energy at home report substantially higher support (M = 4.03) than non-users (M = 3.67). Similarly, those planning to adopt RES within three years show stronger approval (M = 4.07) compared with those not planning adoption (M = 3.43). Education, income, and place of residence do not significantly differentiate attitudes. The findings indicate broadly favorable public sentiment toward state-led support for green entrepreneurship, especially among specific demographic groups and those personally engaged in RES. These insights provide actionable guidance for designing socially legitimate and politically robust sustainability policies.