---
title: "Electricity Solar Estimate"
method: GET
path: "/electricity/solar/estimation"
tags: ["Electricity"]
---

# Electricity Solar Estimate

`GET /electricity/solar/estimation`

This endpoint returns our recommended solar panel size and estimated production of that solar panel system. Simply input the address of the home and we'll handle the rest. We do the work of estimating the available roof space as well as the solar efficiency of that specific location.  

The estimated optimal size of the solar panel system is returned in the "m2_decided" response field.

The estimated monthly production of that system can be found in "solar_production_monthly". This field is a list of solar production values for each month, January through December. If you'd like net usage, these solar values can be subtracted from our total usage estimate response.

## Query parameters

- `wattkey` string
- `address` string
- `city` string
- `state` string
- `zip` string, required

## Response `200`

OK

- object
  - `wattkey` string — The unique identifier for the address used in the estimation.
  - `data` object
    - `solar_production_monthly` number[] — Monthly solar production values in kWh for each month, January through December.
    - `cost_savings_monthly` number[] — Monthly cost savings in USD for each month, January through December, if the solar panel system is installed.
    - `upfront_cost` number — The upfront cost of installing the recommended solar panel system in USD.
    - `payback_period` number — The estimated payback period for the solar panel system in years. The payback period is the length of time it takes for the cost savings to equal the upfront cost.
    - `payback_period_with_incentives` number — The estimated payback period with incentives for the solar panel system in years. The payback period with incentives is the length of time it takes for the cost savings to equal the upfront cost taking the federal incentives into account.
    - `final_system_size_kw` number
    - `price_after_incentives` number
    - `incentives` object[]
      - `geo` string
      - `authority` string
      - `category` string
      - `percentage` number
      - `max_limit` number
      - `amount` number

## Other responses

- `204` — Unable to calculate estimation
- `400` — Bad request
- `500` — Internal server error

---

[API](https://skmtc.net/wattbuy/apis/wattbuy-apis.md) · [All operations](https://skmtc.net/wattbuy/apis/wattbuy-apis/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/wattbuy/wattbuy-apis/revisions/97771153b652/schema)