Civic Intelligence

One Big Sustainable Island

EIN 45-3599222 • 501(c)3 • Monmouth, ME

Profile

One Big Sustainable Island promotes environmental sustainability and community resilience through educational initiatives, public engagement, and demonstration projects. The organization develops and shares resources, tools, and community programs that encourage responsible stewardship of natural resources, sustainable living practices, and innovative local solutions that reduce environmental impact and support long-term ecological health.

705 Route 135Monmouth, ME 04259

1bsi.org

Siviq Scores

Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.

Liabilities / Assets

83rd percentile

0.20x

Higher debt load relative to assets than 83% of similar nonprofits.

501(c)3 • <$500k nonprofits • Source year 2023

Liabilities / Revenue

82nd percentile

0.09x

Higher debt load relative to revenue than 82% of similar nonprofits.

501(c)3 • <$500k nonprofits • Source year 2023

Net Margin

61st percentile

7.9%

Higher net margin than 61% of similar nonprofits.

501(c)3 • <$500k nonprofits • Source year 2023

Top Officer Pay

Score unavailable

No value available

No filing with officer rows is available for this organization yet.

Asset Growth

87th percentile

50%

Faster asset growth than 87% of similar nonprofits.

501(c)3 • <$500k nonprofits • Annualized from 2022 to 2023

Revenue Growth

80th percentile

35%

Faster revenue growth than 80% of similar nonprofits.

501(c)3 • <$500k nonprofits • Annualized from 2022 to 2023

Assets

Down

$64,457

Down $633 (-1.0%) from 2023

Liabilities

Down

$12,519

Down $633 (-4.8%) from 2023

Net Assets

Down

$51,540

Down $398 (-0.8%) from 2023

Revenue

Up

$165,666

Up $20,476 (+14%) from 2023

Expenses

Up

$166,064

Up $32,390 (+24%) from 2023

Net Income

Down

-$398

Down $11,914 (-103%) from 2023

Trend Graphs

Balance Sheet Trend

Grouped bars show assets, liabilities, and net assets across loaded filings.

$80K$60K$40K$20K$0Assets 2021: $31,631Liabilities 2021: $0Net Assets 2021: $31,6312021Assets 2022: $43,300Liabilities 2022: $2,879Net Assets 2022: $40,4212022Assets 2023: $65,090Liabilities 2023: $13,152Net Assets 2023: $51,9382023Assets 2024: $64,457Liabilities 2024: $12,519Net Assets 2024: $51,5402024

Highlighted filing

2024

Assets$64,457
Liabilities$12,519
Net Assets$51,540

Operations Trend

Revenue, expenses, and net income by year, with the latest filing highlighted.

$200K$150K$100K$50K$0-$50KRevenue 2021: $62,118Expenses 2021: $43,847Net Income 2021: $18,2712021Revenue 2022: $107,602Expenses 2022: $98,812Net Income 2022: $8,7902022Revenue 2023: $145,190Expenses 2023: $133,674Net Income 2023: $11,5162023Revenue 2024: $165,666Expenses 2024: $166,064Net Income 2024: -$3982024

Highlighted filing

2024

Revenue$165,666
Expenses$166,064
Net Income-$398

Filings

Latest Filing Detail
Jump To
Filing Snapshot
Filing Period
Jan 1, 2024 to Dec 31, 2024
Signed
Mar 16, 2026
Return Version
2024v5.0
Gross Receipts
$165,666
Mission and Program Overview

Mission

One Big Sustainable Island promotes environmental sustainability and community resilience through educational initiatives, public engagement, and demonstration projects. The organization develops and shares resources, tools, and community programs that encourage responsible stewardship of natural resources, sustainable living practices, and innovative local solutions that reduce environmental impact and support long-term ecological health.

Program Services

DescriptionGrantsExpenses
Overnight Programs: Teach, learning, practicing, and demonstrating sustainable living techniques, instruction on minimal living approaches in ecologically sensitive environments, construction techniques for low impact living structures. 825 participants-$102,567
Local Community Service and Support: Placement of navigational aids, rescue of stranded boaters, invasive plant survey assistance, logistical support for water quality sampling, loon restoration program assistance, maintenance of public access to snowmobile trails, hiking trails, swimming at public beach, and restroom facilities - 500 lake residents assisted-$42,304
Day Programs: Education on island ecology, trail maintenance and local history. 100 participants-$845
Compensation and Service Providers

Employees

NameTitleFull / Part TimeBaseOtherTotal
Kent AckleyExecutive DirectorFT$49,116-$49,116
Wayne RawleyDirector-$0--
Bonnie GreenTreasurer-$0--
Joseph McPhee AIADirector-$0--
Michael Levey JDDirector-$0--
Walter MendersDirector-$0--
Margaret Brick JDPresident-$0--
Filing and Contact Details

Filer

Filer Name
One Big Sustainable Island
EIN
45-3599222
Phone
2075122524
Address
705 Route 135, Monmouth, ME 04259

Signing Officer

Name
Kent F Ackley
Title
Executive Director
Phone
2075122524
Signed
2026-03-16
Supplemental Narrative

Additional Explanations

Part I, Line 16

Business Licenses - $699.70, Insurance - $2858, Website Support - $4225.98, Software and App Costs - $5555.72, Property Taxes - $2765, Donation to Annabessacook Lake Milfoil Mitigation - $5000, Donation to Firehouse Museum - 400.00

Part II, Line 24

Other Asset Details: Nautilus Waterhouse Project $24646, Docks $496

Part II, Line 26

Liabilities detail: Management Fees Payable: $3467, ME Sales Tax Payable: $6549, Deposits: $2503

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IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt0Business Licenses - $699.70, Insurance - $2858, Website Support - $4225.98, Software and App Costs - $5555.72, Property Taxes - $2765, Donation to Annabessacook Lake Milfoil Mitigation - $5000, Donation to Firehouse Museum - 400.00
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ReasonableCauseExplanation/ExplanationTxt01 Big Sustainable Island is a small, volunteer-led nonprofit organization. The organization timely filed Form 8868 and received an extension through November 15, 2025. Due to administrative transition and capacity limitations within the organization, the extended filing deadline was inadvertently missed. Upon discovery of the oversight, the organization immediately took steps to complete and file the return. The organization has implemented internal controls to ensure timely filing going forward, including calendaring compliance deadlines and assigning specific board oversight responsibility. This was not due to willful neglect. We respectfully request abatement of any penalties assessed.
ReturnHeader/BuildTS02025-03-06 01:10:19Z
ReturnHeader/BusinessOfficerGrp/PersonNm0Kent F Ackley
ReturnHeader/BusinessOfficerGrp/PersonTitleTxt0Executive Director
ReturnHeader/BusinessOfficerGrp/PhoneNum02075122524
ReturnHeader/BusinessOfficerGrp/SignatureDt02026-03-16
ReturnHeader/Filer/BusinessName/BusinessNameLine1Txt0ONE BIG SUSTAINABLE ISLAND
ReturnHeader/Filer/BusinessNameControlTxt0ONEB
ReturnHeader/Filer/EIN0453599222
ReturnHeader/Filer/PhoneNum02075122524
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ReturnHeader/Filer/USAddress/CityNm0Monmouth
ReturnHeader/Filer/USAddress/StateAbbreviationCd0ME
ReturnHeader/Filer/USAddress/ZIPCd004259
ReturnHeader/ReturnTs02026-03-16T02:23:49Z
ReturnHeader/ReturnTypeCd0990EZ
ReturnHeader/TaxPeriodBeginDt02024-01-01
ReturnHeader/TaxPeriodEndDt02024-12-31
ReturnHeader/TaxYr02024

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