I think a potential solution or workaround could be to opt for cooperatively owned large solar installations, but this would require buy-in from a community to get it started, and is something those subsidies would've made easier.
Still, it could be that only a portion of your power bill is covered by the solar coop, making the initial price from each member lower. Then more panels could be added slowly as members choose to invest small amounts each month, until over time all of their power usage is from solar.
If they become a worker owned cooperative, they may be able to find a credit union that will give them a loan to grow (there are some that specialize in helping cooperatives). Likely not as much as VC money, but far more sustainable, and for the workers who work there, far more equitable and ethical.
If they take the VC money, it is fairly inevitable that they will want to sell their share of the business and bail at some point. The least they could do if they take the VC money is actively encourage and facilitate their workers to form a union with the IWW, so at least they have a head start in bargaining with their VC overlords after he cashes out. But that scenario is far less ideal than a worker coop.