Based on the given criteria for evaluating the story, here are the scores for both Tragedy Degree and Comedy Degree:

1. Tragedy Degree:
   - The story contains arguments and emotional setbacks, especially concerning the disagreements on installing solar panels. However, these conflicts do not lead to any profound tragedy or strong emotional impact. Instead, the quarrels are resolved through mutual understanding and historical perspective.
   - Therefore, it falls into the range of having some emotional setbacks but not being deeply tragic.

2. Comedy Degree:
   - The story ends on a very positive note with a strong sense of community, unity, and progress. While it might not be comedic in a humorous sense, it is emotionally delightful and has a happy ending.
   - Therefore, it aligns with a relatively high score in terms of an emotionally delightful conclusion, although not necessarily extremely comedic.

Based on this analysis, the scores are as follows:

```json
{
  "TragedyDegree": 3,
  "ComedyDegree": 8
}
```
