HIMS eGRID Subregion - HICC Miscellaneous Emission Factor (2023)

EPA eGRID2023 Rev2 · States: HI · Very Dirty

HIMS (HICC Miscellaneous) covers ZIP codes in HI (100%), by share of its ZIP codes. Its largest generation sources in 2023 were oil 66%, wind 12%, geothermal 7%. This page gives the official EPA eGRID2023 emission factors for HIMS, used for GHG Protocol Scope 2 location-based reporting.

Emission Factors

1133.294

lb CO₂e / MWh

0.5141

kg CO₂e / kWh

34.19%

Carbon-free

34.19%

Renewable

The HIMS subregion is 47% dirtier than the US average (770.9 lb CO₂e/MWh).

All Pollutants

Pollutant	lb / MWh	kg / kWh	Scope
CO₂e (total GHG)	1133.294	0.5141	Scope 2
CO₂	1123.371	0.5096	Scope 2
CH₄ (methane)	0.146	0.00006622	Scope 2
N₂O (nitrous oxide)	0.022	0.00000998	Scope 2
NO_x	7.565	0.00343143	Air quality
SO₂	4.489	0.00203618	Air quality
CO₂ non-baseload	1596.385	0.7241	Avoided-emissions estimates (not Scope 2)

Generation Mix

Solar6.4%

Wind12.1%

Hydro3.6%

Biomass4.7%

Geothermal7.4%

Oil65.9%

kWh to CO₂ Calculator

Enter electricity consumption (kWh):

Using HIMS emission factor: 1133.294 lb CO₂e/MWh = 0.5141 kg/kWh. Source: EPA eGRID2023.

Data Source & Methodology

These emission factors are from EPA eGRID2023 Rev2 (released June 2025), the official US government source for grid electricity emission rates. eGRID uses annual net generation and emissions data from all US power plants to calculate subregion-level output emission rates.

For GHG Protocol Scope 2 reporting, use the CO₂e total output emission rate: 1133.294 lb/MWh or 0.5141 kg/kWh.

Get This Data via API

Query HIMS emission factors by ZIP code:

curl "https://emission-factors.com/api/lookup?zip=YOUR_ZIP"

Read the API docs - free, no key, no signup.

Subregions Serving the Same States

HIOA - HICC Oahu

Frequently Asked Questions

What is the HIMS emission factor for Scope 2 reporting?

The HIMS eGRID2023 Scope 2 location-based emission factor is 1133.294 lb CO₂e per MWh (0.5141 kg CO₂e per kWh). This is the value to use in GHG Protocol location-based Scope 2 calculations for facilities in the HICC Miscellaneous subregion.

Which states are in the HIMS subregion?

HIMS (HICC Miscellaneous) covers ZIP codes in HI (100%), by share of its ZIP codes. Its largest generation sources in 2023 were oil 66%, wind 12%, geothermal 7%.

How do I convert kWh to kg CO₂e for HIMS?

Multiply kWh by 0.5141. Example: 50,000 kWh × 0.5141 = 25705 kg CO₂e (25.70 tonnes).

Query any US ZIP code via API

33,700+ ZIP codes · All 27 eGRID subregions · EPA eGRID2023 + eGRID2024 (Cornerstone)

Read the API docs · Scope 2 guide