Waikoloa Solar +

Storage Project

Hawai‘i’s 100% Clean Energy Future – Locally Produced Renewable Energy

In 2008, the State of Hawai‘i established a goal to reduce the state’s reliance on imported fossil fuel and produce 100% of electricity from renewable energy sources by the year 2045.

In 2018, Hawaiian Electric Companies (HECO) issued the largest ever Request for Proposals (RFP) for renewable energy in the state’s history. Through that process, eight projects were selected including the Waikoloa Solar + Storage Project.

Job creation and economic benefits- AES Distributed Energy (AES DE) is deeply committed to lifting communities during these challenging times. As part of its ongoing commitment, AES DE is working diligently to start construction as soon as possible. It is estimated that the Project construction would result in creation of 193 jobs and generate a total economic output of $45.8 million toward Hawai‘i's economy.

Low-cost renewable energy at $0.08/kWh- Under a Power Purchase Agreement (PPA) approved by the Public Utilities Commission (PUC), the Project would deliver power at $0.08/kWh – one of the lowest in the state for renewable energy, and less than the cost of fossil fuel power.

7.1% of Hawai‘i Island’s Energy – Upon completion, the Project is anticipated to contribute approximately 7.1% of the Hawai‘i Island’s energy needs.*

Avoiding 511,086 Barrels of Oil – The Project is expected to result in total avoided fuel consumption of 511,086 barrels of oil over its 25-year span. *

*Source: Hawaiian Electric Company, PUC Docket 2018-0430

Waikoloa Solar + Storage Project Overview


  • 30 MW solar photovoltaic
  • 120 MWh containerized lithium-ion battery energy storage
  • Feeds into Hawaiian Electric utility (HECO) electrical grid
  • Located in South Kohala District of Hawai‘i Island
  • Utilizes approximately 350 acres of land leased from Waikoloa Mauka Land Corporation
  • 25-year Power Purchase Agreement (PPA)
  • Includes decommissioning and return of Project area to its existing condition (or comparable) at end of lifespan

Collaboration and Engagement

AES Distributed Energy is deeply committed to being an active, invested member in the communities we serve.

Community Input

Throughout the process, AES DE has and will continue to engage and listen carefully to community feedback on the Project. Specific issues identified by the community thus far are actively being addressed and we continue to seek input to ensure we are responsibly examining concerns.


AES DE is committed to minimizing our impacts to Hawai‘i Island commuters.

  • Construction Traffic Management Plan – During the 12 month construction phase, a traffic management plan will be implemented to minimize traffic impacts and to ensure safety of all commuters.
  • Parking and equipment laydown – Parking and equipment laydown will be located within the Project site.
  • Minimal Operational Vehicles and Traffic – upon completion, only 1-2 vehicles per day will be required to operate and maintain the Project.

Stormwater Runoff

AES DE understands the community’s concern for potential impacts to the island’s sensitive ocean ecosystems resulting from stormwater runoff.

  • Containment of Stormwater Runoff – The Project has been designed to contain stormwater runoff on site with implementation of Best Management Practices.
  • Minimal surface improvements – Drainage patterns of the majority of the site will remain unchanged and solar arrays will be elevated above the undeveloped ground surface resulting in minimal impact to onsite drainage.

Fire and Safety

Brushfires are a significant community concern and AES DE takes this issue very seriously.

  • Fire Suppression – Each battery storage container is equipped with a fire suppression system that will minimize risk of fire from Project components.
  • Firebreaks – A non-vegetated firebreak will encircle the Project area as well as each battery storage area to further reduce fire risk.
  • Vegetation Management – AES DE will actively maintain the vegetation on site to minimize the risk of brushfires spreading through the property.

Unexploded Ordinance (UXO)

Safety is AES DE’s number one priority.

  • Project Area is within the Former Waikoloa Maneuver Area.
  • Site Specific Safety Plan will be developed prior to construction activities in accordance with the State of Hawaii Areawide Environmental Hazard Management Plan.

Visual Impacts

Community members have raised visual impacts as an important consideration.

  • Sensitive Siting –As much as possible, the Project will be designed and laid out to reduce visual impacts, especially from neighboring communities.
  • Visual Simulations and View Planes –To better understand the visual impacts, AES DE prepared renderings to simulate views of the project from various vantage points.

Culture and Archaeology

AES DE recognizes we have a responsibility to respectfully address archaeological and cultural resources early in the process. With this understanding, we started the Project by conductinga Cultural Assessment and an Archaeological Inventory Survey (AIS).


Site Plan

Contact Us

Provide your comments or get the latest project information. Email: WaikoloaSolar@aes.com Web: www.waikoloasolar.com

About Us:

AES Distributed Energy (AES DE), a wholly owned subsidiary of The AES Corporation (NYSE:AES), is a trusted energy partner delivering reliable and affordable solar PV projects on a stand-alone basis or paired with storage. AES DE currently operates over 50 MW of solar and solar + storage across the Hawaiian Islands, with another 100 MW solar + storage in development on O‘ahu, Maui and Hawai‘i Island. AES DE shares the state’s commitment to a greener and more resilient energy future and helping the state realize its goal of reaching 100% renewable energy by 2045.

In 2018, AES DE completed one of the world’s largest solar + storage projects on the island of Kaua‘i, an innovative 28 MW solar and 100 MWh battery energy storage system. AES DE completed another utility-scale solar + storage project on the island of Kaua‘i, a 19 MW solar and 70 MWh battery energy storage system, at the end of 2019. The company also operates twelve ground-mounted solar projects ranging from 500 kW to 1 MW each and delivers nearly 9 MW DC of renewable energy annually to O‘ahu and Maui islands.

AES DE was selected by the Hawaiian Electric Companies (HECO) for three of its eight solar + storage projects, the largest addition of renewable energy in the state’s history. The Public Utilities Commission (PUC) approved all three projects, Kuihelani (Maui), Waikoloa (Hawai‘i Island) and West O‘ahu, which in total are estimated would contribute over 3% of Hawaiian Electric Companies’ renewable portfolio standard (RPS).*

*Source: Hawaiian Electric Company, PUC Dockets 2019-0050, 2018-0436, 2018-0430; Exhibit 6


We appreciate your interest and participation in Hawaii’s renewable energy future. We look forward to hearing your ideas, thoughts and comments.