Liabilities / Assets
8th percentile
Higher debt load relative to assets than 8% of similar nonprofits.
EIN 46-0226551 • 501(c)12 • Rapid City, SD
Profile
Wholesale power supplier to distribution company
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
Liabilities / Assets
8th percentile
Higher debt load relative to assets than 8% of similar nonprofits.
Liabilities / Revenue
27th percentile
Higher debt load relative to revenue than 27% of similar nonprofits.
Net Margin
90th percentile
Higher net margin than 90% of similar nonprofits.
Top Officer Pay
72nd percentile
Higher top officer pay than 72% of similar nonprofits.
Top officer pay equals 3.2% of source-year revenue.
Asset Growth
53rd percentile
Faster asset growth than 53% of similar nonprofits.
Revenue Growth
7th percentile
Faster revenue growth than 7% of similar nonprofits.
Assets
Up$79,206,939
Up $3,176,301 (+4.2%) from 2023
Liabilities
Up$10,297,726
Up $1,308,983 (+15%) from 2023
Net Assets
Up$68,909,213
Up $1,867,318 (+2.8%) from 2023
Revenue
Down$11,018,366
Down $1,368,592 (-11%) from 2023
Expenses
Up$9,151,048
Up $575,812 (+6.7%) from 2023
Net Income
Down$1,867,318
Down $1,944,404 (-51%) from 2023
Most recent year
2024 • Form 990Detailed filing. Detailed filing data is available for this year.
Wholesale power supplier to distribution company
| Line | Beginning | End | Change |
|---|---|---|---|
| Assets | |||
| Investments Program Related | $67,056,614 | $69,167,682 | ▲ $2,111,068 |
| Rtn Earn Endowment Incm Other Fnds | $67,041,095 | $68,908,413 | ▲ $1,867,318 |
| Accounts Receivable | $6,333,406 | $6,996,807 | ▲ $663,401 |
| Land, Buildings, and Equipment, Net | $1,751,614 | $2,131,680 | ▲ $380,066 |
| Prepaid Expenses and Deferred Charges | $313,632 | $332,965 | ▲ $19,333 |
| Other Notes and Loans Receivable, Net | $216,797 | $318,470 | ▲ $101,673 |
| Savings and Temporary Cash Investments | $358,575 | $259,335 | ▼ $99,240 |
| Cap Stk Tr Prin Current Funds | $800 | $800 | → $0 |
| Total Assets | $76,030,638 | $79,206,939 | ▲ $3,176,301 |
| Liabilities | |||
| Accounts Payable and Accrued Expenses | $8,602,438 | $9,905,237 | ▲ $1,302,799 |
| Other Liabilities | $240,995 | $247,179 | ▲ $6,184 |
| Mortgage Notes Payable Secured by Investment Property | $145,310 | $145,310 | → $0 |
| Total Liabilities | $8,988,743 | $10,297,726 | ▲ $1,308,983 |
| Net Assets / Fund Balance | |||
| Total Net Assets Fund Balance | $67,041,895 | $68,909,213 | ▲ $1,867,318 |
| Total Liabilities and Net Assets / Fund Balance | $76,030,638 | $79,206,939 | ▲ $3,176,301 |
| Asset | Book Value | Depreciation | Basis |
|---|---|---|---|
| Equipment | $1,775,368 | $7,799,330 | $9,574,698 |
| Buildings | $150,851 | $848,867 | $999,718 |
| Land | $205,461 | - | $205,461 |
| Investment Program Related Org | $350,816 | - | - |
| Name | Title | Full / Part Time | Base | Other | Total |
|---|---|---|---|---|---|
| Kory Hammerbeck | CEO/general | FT | $257,530 | $95,886 | $353,416 |
| Kory Hammerbeck | CEO/general Manager | - | $257,530 | $95,886 | $353,416 |
| Cory Trapp | Engineering | FT | $193,527 | $76,147 | $269,674 |
| Cory Trapp | Engineering Manager | - | $193,527 | $76,147 | $269,674 |
| Matt Brunner | CMO | FT | $165,536 | $66,444 | $231,980 |
| Marccharles Zautke | CIO | FT | $152,861 | $64,158 | $217,019 |
| Mark Miller | CFO | FT | $128,031 | $62,715 | $190,746 |
| Justin Brickner | Secretary | - | $9,250 | - | $9,250 |
| Tom Schlack | Director | - | $8,000 | - | $8,000 |
| Dwight Rossow | President | - | $7,100 | - | $7,100 |
| Jamie Lewis | Director | - | $7,000 | - | $7,000 |
| Kerry Mclellan | Director | - | $7,000 | - | $7,000 |
| Dave Lindblom | Vice Preside | - | $6,000 | - | $6,000 |
| Dan Hefner | Treasurer | - | $5,500 | - | $5,500 |
| Mike Mcquistion | Director | - | $4,500 | - | $4,500 |
| Line Item | Amount |
|---|---|
| Salaries, Compensation, and Employee Benefits | $3,776,881 |
| Other Expenses | $2,514,403 |
| Grants and Similar Amounts Paid | $0 |
| Professional Fundraising Fees | $0 |
| Total Fundraising Expense | $0 |
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| Benefits to Members | - | - | - | $2,859,764 |
| Other Salaries and Wages | - | - | - | $2,412,326 |
| Information Technology | - | - | - | $871,478 |
| Pension Plan Contributions | - | - | - | $655,038 |
| Depreciation Depletion | - | - | - | $513,251 |
| Current Officers, Directors, Trustees, and Key Employees | - | - | - | $407,766 |
| Payroll Taxes | - | - | - | $181,187 |
| Advertising | - | - | - | $156,399 |
| Conferences and Meetings | - | - | - | $134,172 |
| Other Employee Benefits | - | - | - | $120,564 |
| Occupancy | - | - | - | $119,737 |
| Fees for Services Legal | - | - | - | $98,658 |
| Travel | - | - | - | $84,369 |
| Fees for Services Other | - | - | - | $70,553 |
| Other Expenses | - | - | - | $49,937 |
| Office Expenses | - | - | - | $47,424 |
| Fees for Services Accounting | - | - | - | $23,576 |
| Total Functional Expenses | $0 | $0 | $0 | $9,151,048 |
| Line Item | Amount |
|---|---|
| Total Expenses per Audited Statements | $79,497,537 |
| Expenses Not Reported on Form 990 | $73,808,762 |
| Total Expenses per Form 990 | $9,151,048 |
| Expenses per Audited Statements | $5,688,775 |
| Expenses Not Reported on Financial Statements | $3,462,273 |
| Other Expense Adjustments | $3,462,273 |
| Line Item | Amount |
|---|---|
| Professional Fundraising Fees | $0 |
| Liability | Amount |
|---|---|
| Accrued Past Service Cost | $247,179 |
“There are eight member cooperatives, each of which has one representative that is a voting member of our board of directors.”
“Each member cooperative elects one of their board of directors to be on the board of directors of rushmore electric power cooperative.”
“Management has an outside cpa firm prepare the form 990. A copy is provided to the board of directors to review before filing. Management reviews and approves the form 990 before filing.”
“The general manager and board of directors are responsible for monitoring and enforcing the conflict of interest policy at all committee and board meetings.”
“A yearly compensation study is prepared by the national rural electric cooperative association. The study includes national, regional, state and local wage comparisons for each position in the cooperative. The board of directors reviews and approves the compensation of the general manager. Documentation of comparable data is maintained.”
“The general manager also assumes the role of finance officer.”
“Upon written request the cooperative will mail out annual reports, rus reports and the articles of incorporation to non-members. Members can receive the articles of incorporation, bylaws, board policies, wholesale rate schedule, audit reports, management audits, power billing data, engineering studies, load studies, annual reports, rus reports and rate studies.”
“At december 31, 2024, the cooperative believes no significant uncertain tax positions or liabilities exist.”
“Inter-company eliminating activity - engineering 25,800 cost of power 73,767,878 rci rent 15,084”
“Leased employees 313,705 admin fee 3,000 payroll reimburse-rci 285,804”
“Cost of power 73,767,878 inter-company eliminating activity - engineering 25,800 rci rent 15,084”
“Leased employees 313,705 admin fee 3,000 payroll reim-rci 285,804 retirement of capital credits 2,859,764”
This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.
| Path | # | Value |
|---|---|---|
| IRS990/AccountantCompileOrReviewInd | 0 | false |
| IRS990/AccountsPayableAccrExpnssGrp/BOYAmt | 0 | 8602438 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 9905237 |
| IRS990/AccountsReceivableGrp/BOYAmt | 0 | 6333406 |
| IRS990/AccountsReceivableGrp/EOYAmt | 0 | 6996807 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | false |
| IRS990/ActivityOrMissionDesc | 0 | WHOLESALE POWER SUPPLIER TO DISTRIBUTION COMPANY |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 156399 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | true |
| IRS990/AuditCommitteeInd | 0 | true |
| IRS990/BackupWthldComplianceInd | 0 | true |
| IRS990/BenefitsToMembersGrp/TotalAmt | 0 | 2859764 |
| IRS990/BooksInCareOfDetail/PersonNm | 0 | KORY HAMMERBECK |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 6053424759 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | PO BOX 2414 |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | RAPID CITY |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | SD |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 57709 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | false |
| IRS990/BusinessRlnWithFamMemInd | 0 | false |
| IRS990/BusinessRlnWithOrgMemInd | 0 | false |
| IRS990/CapStkTrPrinCurrentFundsGrp/BOYAmt | 0 | 800 |
| IRS990/CapStkTrPrinCurrentFundsGrp/EOYAmt | 0 | 800 |
| IRS990/ChangeToOrgDocumentsInd | 0 | false |
| IRS990/CollectionsOfArtInd | 0 | false |
| IRS990/CompCurrentOfcrDirectorsGrp/TotalAmt | 0 | 407766 |
| IRS990/CompensationFromOtherSrcsInd | 0 | false |
| IRS990/CompensationProcessCEOInd | 0 | true |
| IRS990/CompensationProcessOtherInd | 0 | true |
| IRS990/ConferencesMeetingsGrp/TotalAmt | 0 | 134172 |
| IRS990/ConflictOfInterestPolicyInd | 0 | true |
| IRS990/ConservationEasementsInd | 0 | false |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | true |
| IRS990/CostOfGoodsSoldAmt | 0 | 73767878 |
| IRS990/CreditCounselingInd | 0 | false |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 2859764 |
| IRS990/CYContributionsGrantsAmt | 0 | 0 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/CYInvestmentIncomeAmt | 0 | 204925 |
| IRS990/CYOtherExpensesAmt | 0 | 2514403 |
| IRS990/CYOtherRevenueAmt | 0 | 4768725 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 6044716 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | 1867318 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 3776881 |
| IRS990/CYTotalExpensesAmt | 0 | 9151048 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 0 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 11018366 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | false |
| IRS990/DeductibleArtContributionInd | 0 | false |
| IRS990/DeductibleNonCashContriInd | 0 | false |
| IRS990/DelegationOfMgmtDutiesInd | 0 | false |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 513251 |
| IRS990/Desc | 0 | FURNISHED AMPLE SUPPLY OF LOW-COST ELECTRICAL POWER TO MEET PRESENT AND FUTURE NEEDS OF MEMBERS IN RURAL AREAS. EIGHT DISTRIBUTION MEMBER COOPERATIVES SERVED 69,362 CONSUMERS. |
| IRS990/DescribedInSection501c3Ind | 0 | false |
| IRS990/DisregardedEntityInd | 0 | false |
| IRS990/DocumentRetentionPolicyInd | 0 | true |
| IRS990/DonorAdvisedFundInd | 0 | false |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | false |
| IRS990/ElectionOfBoardMembersInd | 0 | true |
| IRS990/EmployeeCnt | 0 | 31 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | true |
| IRS990/FamilyOrBusinessRlnInd | 0 | false |
| IRS990/FederalGrantAuditRequiredInd | 0 | false |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 23576 |
| IRS990/FeesForServicesLegalGrp/TotalAmt | 0 | 98658 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 70553 |
| IRS990/ForeignActivitiesInd | 0 | false |
| IRS990/ForeignFinancialAccountInd | 0 | false |
| IRS990/ForeignOfficeInd | 0 | false |
| IRS990/Form1098CFiledInd | 0 | false |
| IRS990/Form8282PropertyDisposedOfInd | 0 | false |
| IRS990/Form8899Filedind | 0 | false |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 2.85 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 6 | 2.46 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 7 | 1.85 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 8 | 2.15 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 9 | 2.15 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 10 | 1.85 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 11 | 1.69 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 12 | 1.38 |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 4 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 5 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 6 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 7 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 4 | X |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 0 | 95886 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 1 | 76147 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 2 | 66444 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 3 | 64158 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 4 | 62715 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | KORY HAMMERBECK |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | CORY TRAPP |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | MATT BRUNNER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | MARCCHARLES ZAUTKE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | MARK MILLER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | JUSTIN BRICKNER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | TOM SCHLACK |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | DWIGHT ROSSOW |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | JAMIE LEWIS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | KERRY MCLELLAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | DAVE LINDBLOM |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 11 | DAN HEFNER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 12 | MIKE MCQUISTION |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 0 | 257530 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 1 | 193527 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 2 | 165536 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 3 | 152861 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 4 | 128031 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 5 | 9250 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 6 | 8000 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 7 | 7100 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 8 | 7000 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 9 | 7000 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 10 | 6000 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 11 | 5500 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 12 | 4500 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | CEO/GENERAL |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | ENGINEERING |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | CMO |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | CIO |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | CFO |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | SECRETARY |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 10 | VICE PRESIDE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 11 | TREASURER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 12 | DIRECTOR |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | true |
| IRS990/Form990TFiledInd | 0 | true |
| IRS990/FormationYr | 0 | 1950 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | false |
| IRS990/FSAuditedBasisGrp/ConsolidatedBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | true |
| IRS990/FundraisingActivitiesInd | 0 | false |
| IRS990/GainOrLossGrp/OtherAmt | 0 | 3600 |
| IRS990/GamingActivitiesInd | 0 | false |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 8 |
| IRS990/GrantsToIndividualsInd | 0 | false |
| IRS990/GrantsToOrganizationsInd | 0 | false |
| IRS990/GrantToRelatedPersonInd | 0 | false |
| IRS990/GrossAmountSalesAssetsGrp/OtherAmt | 0 | 3600 |
| IRS990/GrossReceiptsAmt | 0 | 84801328 |
| IRS990/GrossRentsGrp/RealAmt | 0 | 29644 |
| IRS990/GrossSalesOfInventoryAmt | 0 | 77919534 |
| IRS990/GroupReturnForAffiliatesInd | 0 | false |
| IRS990/IncludeFIN48FootnoteInd | 0 | true |
| IRS990/IndependentAuditFinclStmtInd | 0 | true |
| IRS990/IndependentVotingMemberCnt | 0 | 8 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 5 |
| IRS990/IndoorTanningServicesInd | 0 | false |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InformationTechnologyGrp/TotalAmt | 0 | 871478 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 201325 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 201325 |
| IRS990/InvestmentInJointVentureInd | 0 | false |
| IRS990/InvestmentsProgramRelatedGrp/BOYAmt | 0 | 67056614 |
| IRS990/InvestmentsProgramRelatedGrp/EOYAmt | 0 | 69167682 |
| IRS990/IRPDocumentCnt | 0 | 19 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 8648197 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 1751614 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 2131680 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 10779877 |
| IRS990/LegalDomicileStateCd | 0 | SD |
| IRS990/LessRentalExpensesGrp/RealAmt | 0 | 15084 |
| IRS990/LoanOutstandingInd | 0 | false |
| IRS990/LocalChaptersInd | 0 | false |
| IRS990/MaterialDiversionOrMisuseInd | 0 | false |
| IRS990/MembersAndShrGrossIncomeAmt | 0 | 81756107 |
| IRS990/MembersOrStockholdersInd | 0 | true |
| IRS990/MethodOfAccountingAccrualInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | true |
| IRS990/MinutesOfGoverningBodyInd | 0 | true |
| IRS990/MissionDesc | 0 | WHOLESALE POWER SUPPLIER TO DISTRIBUTION COMPANY |
| IRS990/MoreThan5000KToIndividualsInd | 0 | false |
| IRS990/MoreThan5000KToOrgInd | 0 | false |
| IRS990/MortgNotesPyblScrdInvstPropGrp/BOYAmt | 0 | 145310 |
| IRS990/MortgNotesPyblScrdInvstPropGrp/EOYAmt | 0 | 145310 |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 67041895 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 68909213 |
| IRS990/NetGainOrLossInvestmentsGrp/ExclusionAmt | 0 | 3600 |
| IRS990/NetGainOrLossInvestmentsGrp/TotalRevenueColumnAmt | 0 | 3600 |
| IRS990/NetIncomeOrLossGrp/RelatedOrExemptFuncIncomeAmt | 0 | 4151656 |
| IRS990/NetIncomeOrLossGrp/TotalRevenueColumnAmt | 0 | 4151656 |
| IRS990/NetRentalIncomeOrLossGrp/ExclusionAmt | 0 | 14560 |
| IRS990/NetRentalIncomeOrLossGrp/TotalRevenueColumnAmt | 0 | 14560 |
| IRS990/NondeductibleContributionsInd | 0 | false |
| IRS990/OccupancyGrp/TotalAmt | 0 | 119737 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 47424 |
| IRS990/OfficerMailingAddressInd | 0 | false |
| IRS990/OperateHospitalInd | 0 | false |
| IRS990/Organization501cInd | 0 | X |
| IRS990/OrgDoesNotFollowFASB117Ind | 0 | X |
| IRS990/OtherEmployeeBenefitsGrp/TotalAmt | 0 | 120564 |
| IRS990/OtherExpensesGrp/Desc | 0 | EQUIP AND VEHICLE EXP |
| IRS990/OtherExpensesGrp/Desc | 1 | DUES AND SUBSCRIPTIONS |
| IRS990/OtherExpensesGrp/Desc | 2 | MISCELLANEOUS |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 201222 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 143627 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 49937 |
| IRS990/OtherLiabilitiesGrp/BOYAmt | 0 | 240995 |
| IRS990/OtherLiabilitiesGrp/EOYAmt | 0 | 247179 |
| IRS990/OtherRevenueMiscGrp/BusinessCd | 0 | 541300 |
| IRS990/OtherRevenueMiscGrp/BusinessCd | 1 | 541300 |
| IRS990/OtherRevenueMiscGrp/BusinessCd | 2 | 541300 |
| IRS990/OtherRevenueMiscGrp/Desc | 0 | LEASED EMPLOYEES-CREDIT UNION |
| IRS990/OtherRevenueMiscGrp/Desc | 1 | PAYROLL REIMBURSE-RCI |
| IRS990/OtherRevenueMiscGrp/Desc | 2 | ADMIN SERVICES - CREDIT UNION |
| IRS990/OtherRevenueMiscGrp/ExclusionAmt | 0 | 313705 |
| IRS990/OtherRevenueMiscGrp/ExclusionAmt | 1 | 285804 |
| IRS990/OtherRevenueMiscGrp/ExclusionAmt | 2 | 3000 |
| IRS990/OtherRevenueMiscGrp/TotalRevenueColumnAmt | 0 | 313705 |
| IRS990/OtherRevenueMiscGrp/TotalRevenueColumnAmt | 1 | 285804 |
| IRS990/OtherRevenueMiscGrp/TotalRevenueColumnAmt | 2 | 3000 |
| IRS990/OtherRevenueTotalAmt | 0 | 602509 |
| IRS990/OtherSalariesAndWagesGrp/TotalAmt | 0 | 2412326 |
| IRS990/OtherSourcesGrossIncomeAmt | 0 | 1150641 |
| IRS990/OthNotesLoansReceivableNetGrp/BOYAmt | 0 | 216797 |
| IRS990/OthNotesLoansReceivableNetGrp/EOYAmt | 0 | 318470 |
| IRS990/PartialLiquidationInd | 0 | false |
| IRS990/PayPremiumsPrsnlBnftCntrctInd | 0 | false |
| IRS990/PayrollTaxesGrp/TotalAmt | 0 | 181187 |
| IRS990/PensionPlanContributionsGrp/TotalAmt | 0 | 655038 |
| IRS990/PoliticalCampaignActyInd | 0 | false |
| IRS990/PrepaidExpensesDefrdChargesGrp/BOYAmt | 0 | 313632 |
| IRS990/PrepaidExpensesDefrdChargesGrp/EOYAmt | 0 | 332965 |
| IRS990/PrincipalOfficerNm | 0 | KORY HAMMERBECK |
| IRS990/ProfessionalFundraisingInd | 0 | false |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 0 | 221000 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 1 | 541300 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 2 | 221000 |
| IRS990/ProgramServiceRevenueGrp/Desc | 0 | G&T CAPITAL CREDITS |
| IRS990/ProgramServiceRevenueGrp/Desc | 1 | ENGINEERING REVENUE |
| IRS990/ProgramServiceRevenueGrp/Desc | 2 | OTHER CAPITAL CREDITS |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 4538800 |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 1 | 1499433 |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 2 | 6483 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 0 | 4538800 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 1 | 1499433 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 2 | 6483 |
| IRS990/ProhibitedTaxShelterTransInd | 0 | false |
| IRS990/PYBenefitsPaidToMembersAmt | 0 | 2619228 |
| IRS990/PYInvestmentIncomeAmt | 0 | 220369 |
| IRS990/PYOtherExpensesAmt | 0 | 2557655 |
| IRS990/PYOtherRevenueAmt | 0 | 4718168 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 7448421 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | 3811722 |
| IRS990/PYSalariesCompEmpBnftPaidAmt | 0 | 3398353 |
| IRS990/PYTotalExpensesAmt | 0 | 8575236 |
| IRS990/PYTotalRevenueAmt | 0 | 12386958 |
| IRS990/QuidProQuoContributionsInd | 0 | false |
| IRS990/RcvFndsToPayPrsnlBnftCntrctInd | 0 | false |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | 1867318 |
| IRS990/RegularMonitoringEnfrcInd | 0 | true |
| IRS990/RelatedEntityInd | 0 | true |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | true |
| IRS990/RentalIncomeOrLossGrp/RealAmt | 0 | 14560 |
| IRS990/ReportInvestmentsOtherSecInd | 0 | false |
| IRS990/ReportLandBuildingEquipmentInd | 0 | true |
| IRS990/ReportOtherAssetsInd | 0 | false |
| IRS990/ReportOtherLiabilitiesInd | 0 | true |
| IRS990/ReportProgramRelatedInvstInd | 0 | true |
| IRS990/RtnEarnEndowmentIncmOthFndsGrp/BOYAmt | 0 | 67041095 |
| IRS990/RtnEarnEndowmentIncmOthFndsGrp/EOYAmt | 0 | 68908413 |
| IRS990/SavingsAndTempCashInvstGrp/BOYAmt | 0 | 358575 |
| IRS990/SavingsAndTempCashInvstGrp/EOYAmt | 0 | 259335 |
| IRS990/ScheduleBRequiredInd | 0 | false |
| IRS990ScheduleD/BuildingsGrp/BookValueAmt | 0 | 150851 |
| IRS990ScheduleD/BuildingsGrp/DepreciationAmt | 0 | 848867 |
| IRS990ScheduleD/BuildingsGrp/OtherCostOrOtherBasisAmt | 0 | 999718 |
| IRS990ScheduleD/EquipmentGrp/BookValueAmt | 0 | 1775368 |
| IRS990ScheduleD/EquipmentGrp/DepreciationAmt | 0 | 7799330 |
| IRS990ScheduleD/EquipmentGrp/OtherCostOrOtherBasisAmt | 0 | 9574698 |
| IRS990ScheduleD/ExpensesNotReportedAmt | 0 | 73808762 |
| IRS990ScheduleD/ExpensesNotRptFinclStmtAmt | 0 | 3462273 |
| IRS990ScheduleD/ExpensesSubtotalAmt | 0 | 5688775 |
| IRS990ScheduleD/FootnoteTextInd | 0 | X |
| IRS990ScheduleD/InvstProgramRelatedOrgGrp/BookValueAmt | 0 | 64284622 |
| IRS990ScheduleD/InvstProgramRelatedOrgGrp/BookValueAmt | 1 | 4145552 |
| IRS990ScheduleD/InvstProgramRelatedOrgGrp/BookValueAmt | 2 | 386692 |
| IRS990ScheduleD/InvstProgramRelatedOrgGrp/BookValueAmt | 3 | 350816 |
| IRS990ScheduleD/InvstProgramRelatedOrgGrp/Desc | 0 | PATRONAGE CAPITAL CREDITS |
| IRS990ScheduleD/InvstProgramRelatedOrgGrp/Desc | 1 | BASIN ELECTRIC COMMERCIAL PAPER |
| IRS990ScheduleD/InvstProgramRelatedOrgGrp/Desc | 2 | CAPITAL TERM CERTS-OTHER COOPS |
| IRS990ScheduleD/InvstProgramRelatedOrgGrp/Desc | 3 | INVESTMENT IN RUSHMORE COMMUNICATION |
| IRS990ScheduleD/InvstProgramRelatedOrgGrp/MethodValuationCd | 0 | C |
| IRS990ScheduleD/InvstProgramRelatedOrgGrp/MethodValuationCd | 1 | C |
| IRS990ScheduleD/InvstProgramRelatedOrgGrp/MethodValuationCd | 2 | C |
| IRS990ScheduleD/InvstProgramRelatedOrgGrp/MethodValuationCd | 3 | C |
| IRS990ScheduleD/LandGrp/BookValueAmt | 0 | 205461 |
| IRS990ScheduleD/LandGrp/OtherCostOrOtherBasisAmt | 0 | 205461 |
| IRS990ScheduleD/OtherExpensesIncludedAmt | 0 | 73808762 |
| IRS990ScheduleD/OtherExpensesNotIncludedAmt | 0 | 3462273 |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Amt | 0 | 247179 |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Desc | 0 | ACCRUED PAST SERVICE COST |
| IRS990ScheduleD/OtherRevenueAmt | 0 | 73808762 |
| IRS990ScheduleD/OtherRevenuesNotIncludedAmt | 0 | 602509 |
| IRS990ScheduleD/RevenueNotReportedAmt | 0 | 73808762 |
| IRS990ScheduleD/RevenueNotReportedFinclStmtAmt | 0 | 602509 |
| IRS990ScheduleD/RevenueSubtotalAmt | 0 | 10415857 |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 0 | AT DECEMBER 31, 2024, THE COOPERATIVE BELIEVES NO SIGNIFICANT UNCERTAIN TAX POSITIONS OR LIABILITIES EXIST. |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 1 | INTER-COMPANY ELIMINATING ACTIVITY - ENGINEERING 25,800 COST OF POWER 73,767,878 RCI RENT 15,084 |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 2 | LEASED EMPLOYEES 313,705 ADMIN FEE 3,000 PAYROLL REIMBURSE-RCI 285,804 |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 3 | COST OF POWER 73,767,878 INTER-COMPANY ELIMINATING ACTIVITY - ENGINEERING 25,800 RCI RENT 15,084 |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 4 | LEASED EMPLOYEES 313,705 ADMIN FEE 3,000 PAYROLL REIM-RCI 285,804 RETIREMENT OF CAPITAL CREDITS 2,859,764 |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | SCHEDULE D, PAGE 3, PART X |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | SCHEDULE D, PAGE 4, PART XI, LINE 2D |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 2 | SCHEDULE D, PAGE 4, PART XI, LINE 4B |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 3 | SCHEDULE D, PAGE 4, PART XII, LINE 2D |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 4 | SCHEDULE D, PAGE 4, PART XII, LINE 4B |
| IRS990ScheduleD/TotalBookValueLandBuildingsAmt | 0 | 2131680 |
| IRS990ScheduleD/TotalBookValueProgramRltdAmt | 0 | 69167682 |
| IRS990ScheduleD/TotalExpensesPerForm990Amt | 0 | 9151048 |
| IRS990ScheduleD/TotalLiabilityAmt | 0 | 247179 |
| IRS990ScheduleD/TotalRevenuePerForm990Amt | 0 | 11018366 |
| IRS990ScheduleD/TotalRevEtcAuditedFinclStmtAmt | 0 | 84224619 |
| IRS990ScheduleD/TotExpnsEtcAuditedFinclStmtAmt | 0 | 79497537 |
| IRS990ScheduleJ/BoardOrCommitteeApprovalInd | 0 | X |
| IRS990ScheduleJ/CompensationSurveyInd | 0 | X |
| IRS990ScheduleJ/EquityBasedCompArrngmInd | 0 | false |
| IRS990/ScheduleJRequiredInd | 0 | true |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BaseCompensationFilingOrgAmt | 0 | 257530 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BaseCompensationFilingOrgAmt | 1 | 193527 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BaseCompensationFilingOrgAmt | 2 | 165536 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BaseCompensationFilingOrgAmt | 3 | 152861 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BaseCompensationFilingOrgAmt | 4 | 128031 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/DeferredCompensationFlngOrgAmt | 0 | 60250 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/DeferredCompensationFlngOrgAmt | 1 | 44050 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/DeferredCompensationFlngOrgAmt | 2 | 36692 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/DeferredCompensationFlngOrgAmt | 3 | 34799 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/DeferredCompensationFlngOrgAmt | 4 | 30835 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/NontaxableBenefitsFilingOrgAmt | 0 | 35636 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/NontaxableBenefitsFilingOrgAmt | 1 | 32097 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/NontaxableBenefitsFilingOrgAmt | 2 | 29752 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/NontaxableBenefitsFilingOrgAmt | 3 | 29359 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/NontaxableBenefitsFilingOrgAmt | 4 | 31880 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/PersonNm | 0 | KORY HAMMERBECK |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/PersonNm | 1 | CORY TRAPP |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/PersonNm | 2 | MATT BRUNNER |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/PersonNm | 3 | MARCCHARLES ZAUTKE |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/PersonNm | 4 | MARK MILLER |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TitleTxt | 0 | CEO/GENERAL MANAGER |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TitleTxt | 1 | ENGINEERING MANAGER |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TitleTxt | 2 | CMO |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TitleTxt | 3 | CIO |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TitleTxt | 4 | CFO |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TotalCompensationFilingOrgAmt | 0 | 353416 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TotalCompensationFilingOrgAmt | 1 | 269674 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TotalCompensationFilingOrgAmt | 2 | 231980 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TotalCompensationFilingOrgAmt | 3 | 217019 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TotalCompensationFilingOrgAmt | 4 | 190746 |
| IRS990ScheduleJ/SeverancePaymentInd | 0 | false |
| IRS990ScheduleJ/SupplementalNonqualRtrPlanInd | 0 | false |
| IRS990ScheduleJ/WrittenEmploymentContractInd | 0 | X |
| IRS990/ScheduleORequiredInd | 0 | true |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 0 | THERE ARE EIGHT MEMBER COOPERATIVES, EACH OF WHICH HAS ONE REPRESENTATIVE THAT IS A VOTING MEMBER OF OUR BOARD OF DIRECTORS. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 1 | EACH MEMBER COOPERATIVE ELECTS ONE OF THEIR BOARD OF DIRECTORS TO BE ON THE BOARD OF DIRECTORS OF RUSHMORE ELECTRIC POWER COOPERATIVE. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 2 | MANAGEMENT HAS AN OUTSIDE CPA FIRM PREPARE THE FORM 990. A COPY IS PROVIDED TO THE BOARD OF DIRECTORS TO REVIEW BEFORE FILING. MANAGEMENT REVIEWS AND APPROVES THE FORM 990 BEFORE FILING. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 3 | THE GENERAL MANAGER AND BOARD OF DIRECTORS ARE RESPONSIBLE FOR MONITORING AND ENFORCING THE CONFLICT OF INTEREST POLICY AT ALL COMMITTEE AND BOARD MEETINGS. |
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