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    Waiawa Phase 2 Solar + Storage Project

    A field of solar panels seen from the air Waiawa Solar + Storage Project

    Hawai'i’s 100% clean energy future – locally produced renewable energy

    AES Clean Energy (AES)* is proposing a 60 MW dc / 30 MW ac solar photo-voltaic array plus 240 MWh of containerized lithium-ion battery energy storage system (BESS) on up to 387 acres of land in Waiawa - near the Ka Uka Boulevard exit of the H-2 freeway in central O‘ahu.

    The Project will provide a clean, reliable source of power for approximately 18,000 O‘ahu homes and delivers power to Hawaiian Electric Company (HECO) at the lowest possible cost at a fixed-price over 20-years. The Project will enable HECO to burn less fossil fuel, and is expected to contribute to the shutting down of existing fossil fuel plants. 

    *Formerly AES Distributed Energy (AES DE)

    Waiawa ph2_Layout-

    Waiawa Solar + Storage project overview

    Proposer Name (Company Name):

    AES Distributed Energy, Inc.

    Parent Company/Owner/Sponsor/etc.

    The AES Corporation

    Net AC Capacity of the Facility (MW):

    30 MW AC

    Battery Storage

    240 MWh

    TMK(s) of Facility Location:

    TMK: 9-6-004:024, 9-6-004:025, 9-6-004:026, 9-4-006:036

    Point of Interconnection's Circuit or Substation Name:

    POI #1 - Waiau-Mililani, 46kV line POI #2 - Wahiawa-Waimano, 46kV line

    Interconnection Route:

    The Project is proposing to interconnect with the Hawaiian Electric grid via the existing overhead Hawaiian Electric sub-transmission lines that run through the Project parcel.


    geo - overhead view of fields and terrain

    Community outreach

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

    As an initial step in the strategic community outreach process, the AES project team conducted a virtual community meeting to capture comments and feedback from the community. The meeting was held on July 8, 2020. A recording of the meeting can be found here.


    Community Outreach Plan:

    General Strategy

    • Identify and maintain a list of area leaders, interested stakeholders, and regional community organizations
    • Provide Project information on an ongoing basis, including:
      • Environmental benefits
      • Economic benefits
      • Job creation
    • Gather Project feedback on an ongoing basis



    Specific methods to share information and collect feedback may include, but not limited to:

    • Conducting Community Meeting(s);
    • Issuance of Community Meeting Notices;
    • Media outreach;
    • Advertising;
    • Outreach to area organizations, community leaders, and elected officials;
    • Social media;
    • Dedicated email address to gather input, comments, and questions;
    • Project website; and
    • Direct mail.


    Local community support or opposition

    AES will directly engage and listen carefully to community feedback regarding the Project. Through this process, project support and opposition will be identified.


    Community outreach efforts

    AES has begun preliminary engagement with key officials, community leaders, and interested stakeholder organizations


    Community benefits

    AES anticipates that initial community benefits from the Project will include delivery of clean, locally produced renewable energy as well as the generation of local jobs and economic activity. In addition, the Project will directly help the island achieve its goal of 100% renewable energy and offset reliance on imported fossil fuel.

    As predevelopment of the Project proceeds, additional opportunities for benefits will be explored in direct collaboration with the area communities.


    Contact Us

    We want to hear from you. Please provide your comments via our project email or sign up for our newsletter to get the latest project information.

    Environmental Compliance, Impacts and Permitting Plan

    Waiawa Project Site Map

    Overall land use and environmental permits and approvals strategy


    AES is deeply committed to working with the community, area leaders, policymakers, and regulators to responsibly develop and operate all of its projects. To that end, our strategic approach is to engage early and often with stakeholders to share information about the project and most importantly, gather feedback to address issues that may arise. This sensitive approach is intended to enable timely approvals.


    Permit applications and approval activities

    Waiawa Schedule

    City Zoning and Land Use Classification

    State of Hawai‘i Land Use District:   Urban 

    The proposed solar facility is consistent with these state and county land-use regulations. No changes in the land use classification or zoning district would be required for Project implementation. 

    City & County of Honolulu Zoning: 

    • Low-density apartment (A-1) 

    • Community business (B-2) 

    • Residential (R-5) 

    • Industrial commercial mixed-use (IMX-1) zoning districts 


    Discretionary and non-discretionary land use, environmental and construction permits and approvals

    Based on a preliminary review, the following determinations have been made:


    U.S. Federal

    • Federal permits or approvals are not anticipated for project implementation
    • Compliance with the National Environmental Policy Act (NEPA) is not anticipated


    City and County of Honolulu

    • a Conditional Use Permit (minor) is anticipated
    • a Zoning Waiver may be required
    • Additional building permits are anticipated, including:
      • Electrical permits
      • Grading/grubbing/stockpiling permits


    State of Hawai‘i

    • An Environmental Assessment (EA) or Environmental Impact Statement (EIS) are not anticipated – the project does not “trigger” HRS Chapter 343.
    • Certain construction-related State permits may be required, including:
      • a National Pollutant Discharge Elimination System (NPDES) permit
      • a Noise Permit
      • Compliance and coordination with the State Historic Preservation Division under HRS Chapter 6E is anticipated


    Listing of anticipated Permits and approvals

    Permit Name

    Authority Having Jurisdiction

    HRS Chapter 6E Compliance (Historic Preservation Review)


    National Pollutant Discharge Elimination System (NPDES)

    DOH - Clean Water Branch

    Noise Permit

    State Department of Health (DOH) - Indoor and Radiological Health Branch

    Conditional Use Permit (minor) and Zoning Waiver (if Needed)


    Building Permit & Electrical


    Grading & Grubbing & Stockpiling Permit



    Preliminary environmental assessment of the site (including any pre-existing environmental conditions)

    AES and its environmental consultant have conducted a preliminary assessment of the environmental conditions at the site. The assessment included a review of publicly available maps, studies, and information as well as previous environmental reports prepared for the property.


    Air quality

    Solar PV + BESS systems do not impact air quality as there are no emissions.


    Natural Habitats and Ecosystems

    The Project area has been heavily disturbed by previous agriculture practices, as such, previous biological surveys for the property have indicated no habitats dominated by native species or other sensitive ecosystems are known to be present within the Project area.



    Previous biological surveys conducted for the Waiawa property indicate that the vegetation is dominated by non-native, invasive species, with no native vegetation communities present. 

    No federally or state-listed threatened or endangered plant species (or those proposed or candidate species for listing) are known to occur within the Project area. 



    Previous studies conducted have indicated no federally or state-listed threatened or endangered wildlife species (or those proposed or candidate species for listing) are known to occur within the Project area, and no critical habitat has been designated within the Project area.



    The Project is not anticipated to have an impact on local (or non-local) climate.


    Flood and tsunami hazards

    The project is not within the FEMA 100-year flood plain or the tsunami evacuation zone.



    Once operational, the Project is anticipated to generate minimal noise.


    Roadways and Traffic

    A traffic impact analysis report (TIAR) will be conducted and any required mitigation will be implemented during the construction phase of the project. Once operational and for the duration of the project, it is anticipated there will be minimal new traffic generation.


    Visual Resources

    A visual impact analysis will be conducted. The system will be designed to minimize visual impacts to the extent practicable.


    Solid waste

    The facility is not anticipated to generate solid waste.


    Water quality

    The Project is not anticipated to have an impact on water quality. Best Management Practices (BMPs) will be implemented to avoid water features and minimize runoff or other potential water quality impacts.

    Cultural resource impacts

    Proposer’s updated Community Outreach plan must include a plan that (1) identifies any cultural, historic, or natural resources that will be impacted by the project (2) describes the potential impacts on these resources, and (3) identifies measures to mitigate such impacts.

    A Cultural Impact Assessment (CIA), Archaeological Inventory Survey (AIS), and an archeological site preservation plan have previously been performed for this site. The AIS was accepted by SHPD in April 2015. 

    Existing studies will be updated as necessary in consultation with SHPD under Hawai‘i Revised Statutes (HRS) Chapter 6E. 

    AES is deeply committed to working with cultural practitioners as well as lineal and cultural descendants throughout this process. 


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

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