Yes, the ecological benefits solar street lights bring are worth it. Although the price of the solar street lights is expensive, they will save the money in the long run. The largest part of the savings is the power bill. Since its power comes from the sun, it will resume no electricity. Moreover, the solar street lights have better quality, so they can last for a long time. And there will be no cables or any other device like the distribution box, so the costs of maintaining them are also saved.
More reading: Pros And Cons of Solar Street Lights