The Hamakua Group

Treat cause, Not symptom

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GuideStar Charity Check

The Hamakua Group

EIN: 87-3716275


The Corporation is organized exclusively for charitable, literary or educational purposes under Section 501(c)(3) of the Internal Revenue Code of 1986, or the corresponding provision of any future federal tax code, including for such purposes as to promote, through education and direction, ecologically accountable public and private improvements that lead to responsible action and increased environmental resilience, all of which shall be accomplished within the meaning of Section 501(c)(3) of the Internal Revenue Code.

Notes from the nonprofit

Our Nonprofit is early in its economic development, e.g., our choice of Biochar furnace won't be ready from its manufacturer until 2024. Consequently we have no "results" to enter in GuideStar's Platinum section.

Ruling year info



Robert Gratz

Main address

150 Hamakua Dr #729

Kailua, HI 96734 USA

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Subject area info

Environmental justice

Climate change



Water pollution

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Population served info

Children and youth


NTEE code info

Environmental Quality, Protection, and Beautification N.E.C. (C99)

IRS subsection

501(c)(3) Public Charity

IRS filing requirement

This organization is required to file an IRS Form 990-N.

Programs and results

What we aim to solve

SOURCE: Self-reported by organization

What or wherever the setting, the emission products of fossil fuel consumption include Greenhouse Gases (GHGs). The resulting increased atmospheric CO2 concentration is the main cause of climate change. Increased concentrations of other GHGs, e.g., methane (CH4) and nitrous oxide (N2O) are also contributory, especially from agricultural sources. Concentrations of GHGs as a group are frequently expressed as CO2 equivalents (CO2e), i.e., the mass of CO2 which would cause an equivalent global warming impact. This worsening condition is the current state of our atmosphere.

Our programs

SOURCE: Self-reported by organization

What are the organization's current programs, how do they measure success, and who do the programs serve?

Hamakua Makai Wetland

Restoration of Wetland to its 2002 pre-fill condition to activate more of its wetland ecologic
services including carbon sequestration to demonstrate how Kailua can contribute to a safer local and global future. To protect current wetlands and growth in a sea level rise setting.

- remove previous illegal wetland fill material
- maintenance of natural state to include a modest footpath / boardwalk for public education
- shoreline vegetation control to maintain integrity of Kawainui Stream

Population(s) Served
Children and youth

Biochar to be created on site from local farm cuttings, residue, etc. as well as that of island
wide public and private landholders and landscaping operations. Such biochar will then be
offered back to local farms as a soil amendment to increase their crop yields, and then to
other entities as availability allows. This harvesting of atmospheric CO2 and its sequestration
underground is an example of global CO2 removal to the benefit of local agriculture.

- perform and document ongoing produced biochar field performance on farms of local
biochar recipients
- measure and evaluate efficacy of each wood species vs. its produced biochar field
- modify biochar furnace production specifics as required to improve field performances
- maintain biochar furnace electrical and mechanical infrastructure

Population(s) Served
Children and youth

A passive low impact design (LID) bio-retentive pond system based on current incoming water
quality analyses to clean city stormwater runoff prior to its flow into Kawainui Stream,
Hamakua Wetlands and the ocean. Anticipate ponds becoming a University of Hawaii study
center for similar programs and ongoing research and development of such systems.

- perform and document ongoing freshwater quality analyses
- measure and evaluate efficiency of each Pond's inflow vs. outflow performance
- modify retention schemes as required to improve performance
- maintain pond circulatory infrastructure

Population(s) Served
Children and youth

To provide a greater public availability of automated water quality measurements to assist management of Hamakua Wetlands’ watershed, its beaches and nearshore waters. Public health also to be a beneficiary.

- measure and record real-time multi-site water quality metrics
- document bio-retention pond efficiencies
- characterize current/ongoing kailua waterways pollution, stormwater and other: what, where, when, and how much
- data to be immediately available online to the public in contextualized presentation

Population(s) Served
Children and youth

Where we work

Our results

SOURCE: Self-reported by organization

How does this organization measure their results? It's a hard question but an important one.

Number of tons of carbon sequestered and CO2 removed from the atmosphere.

This metric is no longer tracked.
Totals By Year
Related Program

Biochar Initiative

Type of Metric

Outcome - describing the effects on people or issues

Direction of Success


Context Notes

The Hamakua Group is organizing in an interdisciplinary environment. We have not begun production of our biochar product.

Goals & Strategy

SOURCE: Self-reported by organization

Learn about the organization's key goals, strategies, capabilities, and progress.

Charting impact

Four powerful questions that require reflection about what really matters - results.

The reduction of GHG emissions is a primary method in the solution to climate change. More accurately the reduction in net GHG emissions, which also includes all the technologies contributing to the sequestration of atmospheric CO2. Sequestration in this setting refers to CO2's permanent or near permanent removal from the atmosphere.

The Hamakua Group intends to implement such a project of CO2 sequestration. The Initiative also provides local co-benefits to help remedy Hawaii's lack of self-sufficiency in food sourcing.

The Hamakua Biochar Initiative

Solutions and Co-Benefits

The Hamakua Group is a corporation registered in the State of Hawaii. Our interests include habitat restoration and currently the implementation of a Biochar Initiative of CO2 Sequestration on a scale new to our island of Oahu.

CO2 sequestration here refers to the use of biomass (plants) containing unstable carbon from the atmosphere via photosynthesis to create Biochar containing now stable carbon. This Biochar (carbon) is then incorporated into the soils on local farms sequestering it from the atmosphere and its role in global warming for the long term.

Here’s a concise schema of our proposed course of actions, results and significant co-benefits, The symbol "=>" abbreviates "leads to" and demonstrates the widespread impact the system offers all of Hawaii.

Waste biomass (unstable carbon) from local farms, landscaping firms, property owners, etc. ...

=> Process in energy-neutral pyrolysis furnace(s) => Biochar (stable carbon)

=> Add Biochar to compost during its composting cycle => effective agricultural soil amendment

=> Apply to Hawaii’s acid soils to increase crop yields & lessen chemical fertilizer use/expense

=> Thus decreasing costs of food production and necessity of food importation

=> Thus decreasing public food costs

=> Long-term sequestration of atmospheric CO2 as biochar (stable carbon) in agricultural soils

=> Reducing NET Greenhouse Gas (GHG) emissions, e.g., CO2, methane, nitrous oxide, etc.

The application of such a modern Biochar / compost soil amendment nourishes the soil microbial community which builds and maintains soil fertility and resilience. The advantages of these healthier soils include increased moisture holding capacity and the ability to more effectively transfer nitrogen to plants. Also, the reduction in soil emissions of nitrous oxide (N2O). (Nitrogen from compost is increased due to the addition of Biochar during the composting cycle.) These advantages are apparent even during the first growing season. In livestock operations adding Biochar to manure compost significantly decreases the mixture's methane (CH4) emissions.

Considering all the above benefits, the Initiative’s over-arching solution is its Sequestration of atmospheric CO2, i.e., the conversion of biomass' photosynthetic carbon (from the atmosphere) into Biochar carbon. And burying the latter in agricultural soils, where most remains for hundreds of years.

This project is "low-hanging fruit" in the global effort to disrupt climate change. There’s a large payoff for the dollars spent, especially considering all the co-benefits beyond Sequestration itself. Its scalability allows its practical expansion to the advantage of local communities and beyond.


The Hamakua Group

Financial data

SOURCE: Self-reported by organization

The Hamakua Group

Revenue & expenses

Fiscal Year: 2022

SOURCE: Self-reported by organization

Contributions, Grants, Gifts $1,215
Program Services $0
Membership Dues $0
Special Events $0
Other Revenue $0
Total Revenue $275
Program Services $87
Administration $1,421
Fundraising $0
Payments to Affiliates $0
Other Expenses $0
Total Expenses $1,508

The Hamakua Group

Balance sheet

Fiscal Year: 2022

SOURCE: Self-reported by organization

Total Assets $62
Total Liabilities $241
Fund balance (EOY)
Net Assets ($180)


The people, governance practices, and partners that make the organization tick.

Form 1023/1024 is not available for this organization


Robert Gratz

There are no officers, directors or key employees recorded for this organization

There are no highest paid employees recorded for this organization.

The Hamakua Group

Board of directors
as of 12/09/2023
SOURCE: Self-reported by organization
Board of directors data
Download the most recent year of board of directors data for this organization
Board chair

Mr. Robert Gratz

Cara A Gutierrez

'Iolani Schools

Robert C Gratz


Jessica E Wooley

'Aina Aloha Consulting

Organizational demographics

SOURCE: Self-reported; last updated 9/13/2023

Who works and leads organizations that serve our diverse communities? Candid partnered with CHANGE Philanthropy on this demographic section.


The organization's leader identifies as:

Disability status
Person without a disability

Race & ethnicity

No data

Gender identity

No data


No data

Sexual orientation

No data