Hawaii Electric Light Company (HELCO) Data Access Guide
Hawaii Electric Light Company (HELCO) is the investor-owned utility serving roughly 90,000 electric customers across Hawaii Island, operating as a subsidiary of Hawaiian Electric Company. Regulated by the Hawaii Public Utilities Commission, HELCO has deployed advanced metering infrastructure island-wide and offers 15-minute interval data, Green Button Download My Data and Connect My Data, and the My Energy Use portal for commercial and industrial energy data access.
How to Get Your Hawaii Electric Light Company (HELCO) Data: All Access Methods
| Method | 1st Party | 3rd Party | Customer Types | Data Types | Latency | Format |
|---|---|---|---|---|---|---|
| Online Customer Service Center (billing) | ✓ | — | Residential, Commercial, Industrial | Billing statements, payment history | Monthly | PDF, Web |
| My Energy Use Portal (interval) | ✓ | — | All metered customers | 15-minute interval usage/generation | Near real-time | Web, CSV |
| Green Button Download My Data | ✓ | ✓ | All metered customers | 15-minute interval usage | On demand | XML (ESPI), CSV |
| Green Button Connect My Data | ✓ | ✓ | Authorized third parties | 15-minute interval usage | Automated | XML (ESPI) via API |
| Nectar API (docs.nectarclimate.com) | ✓ | ✓ | Residential, Commercial | Billing + consumption | Weekly/Monthly | API platform |
Billing Data Access
HELCO provides commercial and industrial billing data through the Hawaiian Electric Online Customer Service Center and mobile app, backed by an SAP Utilities Customer Information System. Business customers can view, download, and export bills as PDFs, and large C&I accounts can coordinate bulk billing data exports through an assigned Key Account Manager.
What Data Is on Your Hawaii Electric Light Company (HELCO) Bill
- Monthly billing statements (PDF)
- Billing details by rate schedule
- Demand and energy charges
- Payment history
- Account balance and due dates
How to Download Hawaii Electric Light Company (HELCO) Bills (Business & Commercial)
- 01Register the business account at https://eservice.hawaiianelectric.com
- 02Log in and select View/Pay Bill for statements and billing history
- 03For bulk or recurring data needs, contact the assigned Key Account Manager (Hawaii Island: 808-969-6999)
- 04Provide written customer authorization to enable third-party consultant access
How to Download Hawaii Electric Light Company (HELCO) Bills (Residential)
- 01Visit https://eservice.hawaiianelectric.com and click Register for Online Access
- 02Enter account number and service-address ZIP code
- 03Create username and password and verify email
- 04Log in and select View/Pay Bill to view and download statements
Third-Party Access to Hawaii Electric Light Company (HELCO) Billing Data
Authorized consultant / aggregator access
- 01Customer authorizes the third party in writing
- 02Third party contacts Hawaiian Electric (or Key Account Manager) with authorization
- 03Hawaiian Electric provides billing data export
Nectar API access
- 01Customer authorizes Nectar to retrieve their HELCO data
- 02Nectar's API delivers billing and consumption data to the end service provider — see docs.nectarclimate.com
Want to understand the charges on your bill?
See the Hawaii Electric Light Company (HELCO) Rate Schedules & Tariff Guide →Interval Data & Smart Meters
HELCO has deployed advanced metering infrastructure (AMI) island-wide. Smart meters capture energy use at 15-minute intervals and feed the My Energy Use portal, where customers can view time-of-use breakdowns and export interval data in Green Button XML or CSV. This is the primary interval-data channel for C&I customers.
How to Download Hawaii Electric Light Company (HELCO) Interval Data via Green Button
- 01Log in to https://eservice.hawaiianelectric.com
- 02From Account Overview, click the My Energy Use button
- 03View 15-minute interval usage with on-peak/mid-peak/off-peak color coding
- 04Click Download/Export and choose Green Button (XML) or CSV format
- 05Select a date range and download the file for analysis tools
Interval data is essential for rate comparison and TOU analysis.
See which Hawaii Electric Light Company (HELCO) rate schedule is best for your usage pattern →Third-Party API Access
HELCO's primary programmatic third-party access is Green Button Connect My Data. Third parties register with Hawaiian Electric, then use an OAuth 2.0 authorization flow in which the customer grants scoped access to their 15-minute interval data delivered as ESPI XML. No formal public REST API beyond the ESPI/CMD interface is documented.
Available Hawaii Electric Light Company (HELCO) API Endpoints
| Function | Endpoint | Method | Format |
|---|---|---|---|
| Authorize (OAuth 2.0) | Hawaiian Electric authorization endpoint | GET | OAuth 2.0 redirect |
| Retrieve interval usage | ESPI usage point / interval block | GET | XML (ESPI) |
How to Register as a Hawaii Electric Light Company (HELCO) API Vendor
- 01Register the application with Hawaiian Electric (company details, purpose, data scope, privacy/security policies)
- 02Implement the OAuth 2.0 authorization flow
- 03Customer authorizes and is redirected to Hawaiian Electric to approve scope
- 04Receive access token and retrieve interval data via ESPI APIs
EDI (Electronic Data Interchange)
How to Enroll in Hawaii Electric Light Company (HELCO) EDI
- 01Contact Hawaiian Electric Business Services (Hawaii Island: 808-969-6999) and request a Key Account Manager
- 02Discuss custom data integration options
- 03Use Green Button Connect My Data as the modern RESTful alternative to EDI
Sources
Rate Schedules & Tariff Analysis
HELCO C&I tariffs are demand-heavy: Schedule J adds a $14.00/kW demand charge and Schedule P a $27.00/kW demand charge on top of customer and non-fuel energy charges. Billing demand is ratcheted (the higher of the current month or the mean of the current and prior 11-month peaks, with 25 kW / 200 kW floors), so a single high peak raises bills for up to a year. Layered fuel and adjustment clauses (ECRC, PPAC, PBF, GIF) make Hawaii's effective C&I energy prices the highest in the U.S., so peak management and solar self-supply carry outsized value.
Hawaii Electric Light Company (HELCO) Rate Schedule List
| Schedule | Applicability |
|---|---|
| Schedule G - General Service Non-Demand | Small commercial up to 5,000 kWh/month and 25 kW. |
| Schedule J - General Service Demand | Commercial demand 25-200 kW. |
| Schedule P - Large Power Service | Large power 200 kW and above. |
| Schedule TOU-P - Large Power TOU | Large power time-of-use option. |
Hawaii Electric Light Company (HELCO) Rate Features & TOU Details
- Demand charges with 11-month ratchet on Schedules J and P
- Non-fuel energy charges plus monthly adjustment clauses (ECRC, PPAC, PBF, GIF)
- Power-factor adjustment based on 85% reference for J (200 kW+) and P
- Supply-voltage delivery credits for primary/transmission service
- Time-of-use option (TOU-P) for large power customers
For a deeper analysis including cost optimization strategies and historical rate trends:
Read the full Hawaii Electric Light Company (HELCO) Rate Optimization Guide →Other Data Access Programs
Power Partnership Programs
Demand-response and grid-services programs operated through authorized aggregators for customers with solar, batteries, EVs, or flexible loads; participants earn bill credits or payments.
- 01Enroll with an authorized grid-service aggregator
- 02Authorize the aggregator to dispatch your system within limits
- 03Earn monthly bill credits or cash rewards
Bring Your Own Device Plus (BYOD+)
Connects smart thermostats, EV chargers, water heaters, and batteries to provide shift-and-save grid services during high-renewable periods.
- 01Confirm the device is on the approved list
- 02Enroll the device in your Hawaiian Electric account
- 03Set dispatch limits and monitor bill credits
Better Buildings Benchmarking
Honolulu ordinance program for buildings 25,000+ sq ft to report annual energy use via ENERGY STAR Portfolio Manager, supported by Hawaiian Electric data exports.
- 01Confirm building eligibility (25,000+ sq ft)
- 02Gather annual aggregate energy data (utility can assist)
- 03Report via ENERGY STAR Portfolio Manager
Limitations & Considerations
- ⚠No formal EDI trading-partner program; programmatic access is via Green Button CMD or aggregators.
- ⚠Limited public API documentation beyond the ESPI/Green Button interface.
- ⚠Bulk and recurring C&I data exports generally require Key Account Manager coordination.
- ⚠Some demand-response and EV programs are limited to specific islands or device lists.
Hawaii Electric Light Company (HELCO) Data Access FAQ
How does a commercial customer on Hawaii Island get 15-minute interval data?▾
Log in to the Online Customer Service Center at eservice.hawaiianelectric.com and open the My Energy Use portal. From there you can view 15-minute interval usage and export it as Green Button XML or CSV. For automated feeds, use Green Button Connect My Data with an authorized third party.
Which rate schedule applies to my business?▾
Schedule G covers small general service (under 5,000 kWh/month and 25 kW). Schedule J is general service demand (over 5,000 kWh/month or 25 kW, up to 200 kW). Schedule P is large power service for loads of 200 kW or more. Time-of-use Schedule TOU-P is available for large power customers.
Does HELCO support EDI for billing data exchange?▾
No. HELCO does not publish a formal EDI trading-partner program. The recommended programmatic alternative is Green Button Connect My Data (OAuth 2.0 / ESPI), or coordinating a custom export with a Key Account Manager.
Why are demand charges so important for HELCO C&I customers?▾
Because Hawaii has the highest electricity prices in the U.S., the per-kW demand charges on Schedules J ($14.00/kW) and P ($27.00/kW) plus billing-demand ratchets can dominate a bill. Managing peak demand and shifting load away from the 5 PM-9 PM on-peak window materially lowers costs.
Can a third-party energy consultant access our data automatically?▾
Yes, two ways: the consultant can register for Green Button Connect My Data and have you authorize scoped access via OAuth 2.0, or you can use Nectar, which provides API access to your HELCO billing and interval data — see docs.nectarclimate.com.
The Best Way to Access Data from Hawaii Electric Light Company (HELCO)
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