Take care of what you consuming. Las Terrenas power is expensive, that is true. In the world, i doubt... On the other hand, we have 99% of the time electricity.
When you live for example in Samana, out of Luz y Fuerza electricity compny, you are almost obliged to have a generator. Here in LT you can do with a simple inversor.
On the other hand: i own a 650 m2 villa, 6 bedrooms, 117 m2 pool. When you come here now (its 9 o clock in the evening, everything is on, lights in the pool, in the garden. When i go to sleep i use my airco, etc.
But i invested in led light system, a special very low consuming poolpump from pentair, led garden lights. When i bought my 2 fridges i looked at what their consume rate is, as well for my aircos. Its also a matter of planning. I pay at this moment around 300 usd per month.
Nice job!