Frozen with indecision, could really use your help!

Hi all!

I'm strongly considering installing solar and I could use some help with the decision as I feel completely torn. Details:

- I'm aware that tax credit is ending this year which is pushing me to make a decision

- We own the house. Bought 2 years ago, plan to stay for a long time. The roof is original from 1997 when house was built. It has no problems but I believe that we should probably replace the roof before we install solar given about 30 years old. If we didn't it's unclear when we'd need to redo the roof. My guess would be 10-15 years but who knows.

- Replacing the roof would be around 20K. The solar install would be 26k assuming 10k of credits. We would be able to pay cash.

- That said... our utility bill is only 2.5k per year. If GPT is correct, electricity has doubled over last 10 years.

- Assuming a lifespan of 20 years at the 26k, the solar actually costs 1.3k per year if it lasts 20 years. 866 if it lasts 30 (I understand the battery would last less). That's not a huge difference compared to the utility bill.

- Solar tech seems to be mature somewhat mature? I'm still worried about major improvements in the next few years as well as price drops. I assume labor will always be pricey.

- I'm definitely a proponent of solar and I would like to do it from a philosophical standpoint as well as a hobby, but it would be a lot of work and effort to make it happen especially this year.

- My overall impression is that it's a gamble either way based on an unpredictable future. Given our utility bill isn't that high it seems like it's not going to make an enormous difference to our finances either direction.

Given this, is there anything I'm missing or do you think my reasoning is solid. Is there any advice you could give me? Thanks!