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<url><loc>https://stock.noler.com/us/stock/bkh/derivative-gain-loss-recognized-in-income-net</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/derivative-instruments-loss-reclassified-from-accumulated-oci-into-income-effective-portion</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/derivative-instruments-loss-recognized-in-oci-effective-portion</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/derivative-liabilities</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/derivative-liabilities-current</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/derivative-liabilities-noncurrent</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/derivative-liability-collateral-right-to-reclaim-cash-offset</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/development-costs</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/diluted-shares</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/dilutive-securities</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/discontinued-operation-gain-loss-from-disposal-of-discontinued-operation-before-income-tax</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/discontinued-operation-gain-loss-on-disposal-of-discontinued-operation-net-of-tax</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/discontinued-operation-income-loss-from-discontinued-operation-net-of-tax-per-basic-share</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/discontinued-operation-tax-effect-of-discontinued-operation</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/discounted-future-net-cash-flows-relating-to-proved-oil-and-gas-reserves-10-percent-annual-discount-for-estimated-timing-of-cash-flows</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/discounted-future-net-cash-flows-relating-to-proved-oil-and-gas-reserves-future-cash-inflows</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/discounted-future-net-cash-flows-relating-to-proved-oil-and-gas-reserves-future-development-costs</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/discounted-future-net-cash-flows-relating-to-proved-oil-and-gas-reserves-future-development-costs-1</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/discounted-future-net-cash-flows-relating-to-proved-oil-and-gas-reserves-future-income-tax-expense</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/discounted-future-net-cash-flows-relating-to-proved-oil-and-gas-reserves-future-income-tax-expense-1</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/discounted-future-net-cash-flows-relating-to-proved-oil-and-gas-reserves-future-net-cash-flows</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/discounted-future-net-cash-flows-relating-to-proved-oil-and-gas-reserves-future-production-costs</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/discounted-future-net-cash-flows-relating-to-proved-oil-and-gas-reserves-future-production-costs-1</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/discounted-future-net-cash-flows-relating-to-proved-oil-and-gas-reserves-standardized-measure</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/disposal-group-including-discontinued-operation-assets-noncurrent</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/disposal-group-including-discontinued-operation-cash-and-cash-equivalents</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/disposal-group-including-discontinued-operation-deferred-tax-assets-noncurrent</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/disposal-group-including-discontinued-operation-deferred-tax-liabilities-noncurrent</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/disposal-group-including-discontinued-operation-depreciation-and-amortization</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/disposal-group-including-discontinued-operation-operating-expense</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/disposal-group-including-discontinued-operation-operating-income-loss</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/disposal-group-including-discontinued-operation-other-current-assets</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/disposal-group-including-discontinued-operation-other-liabilities</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/disposal-group-including-discontinued-operation-other-noncurrent-liabilities</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/disposal-group-including-discontinued-operation-property-plant-and-equipment</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/disposal-group-including-discontinued-operation-revenue</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/dividend</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/dividend-safety</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/dividends-common-stock-cash</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/dividends-paid</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/dividends-per-share</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/ebitda</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/ebitda-margin</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/effective-tax-rate</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/employee-count</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/employee-related-liabilities-current</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/energy-related-inventory-natural-gas-in-storage</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/energy-related-inventory-other-fossil-fuel</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/eps</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/eps-basic</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/equity-method-investment-other-than-temporary-impairment</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/executive-pay-pvp</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/executive-salary-officers</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/expense-breakdown</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/exploration-costs</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/extensions-discoveries-additions-and-improved-recovery-less-related-costs</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/fair-value-assets-change-in-unrealized-gain-loss-included-in-investment-income</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/fair-value-assets-level-1-to-level-2-transfers-amount</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/fair-value-assets-level-2-to-level-1-transfers-amount</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/fair-value-liabilities-change-in-unrealized-gain-loss-included-in-other-income</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/fair-value-liabilities-level-1-to-level-2-transfers-amount</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/fair-value-liabilities-level-2-to-level-1-transfers-amount</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/fair-value-measurement-with-unobservable-inputs-reconciliation-liability-transfers-into-level</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/fair-value-measurement-with-unobservable-inputs-reconciliation-liability-transfers-out-of-level</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/fair-value-measurement-with-unobservable-inputs-reconciliations-recurring-basis-liability-value</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/finance-lease-interest-expense</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/finance-lease-interest-payment-on-liability</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/finance-lease-liability</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/finance-lease-liability-current</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/finance-lease-liability-noncurrent</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/finance-lease-liability-payments-due</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/finance-lease-liability-payments-due-after-year-five</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/finance-lease-liability-payments-due-year-five</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/finance-lease-liability-payments-due-year-four</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/finance-lease-liability-payments-due-year-three</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/finance-lease-liability-payments-due-year-two</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/finance-lease-liability-payments-remainder-of-fiscal-year</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/finance-lease-liability-undiscounted-excess-amount</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/finance-lease-principal-payments</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/finance-lease-right-of-use-asset</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/finance-lease-right-of-use-asset-amortization</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/finance-lease-weighted-average-discount-rate-percent</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/financing-cash-flow</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/finite-lived-intangible-assets-amortization-expense</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/finite-lived-intangible-assets-amortization-expense-next-twelve-months</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/finite-lived-intangible-assets-amortization-expense-year-five</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/finite-lived-intangible-assets-amortization-expense-year-four</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/finite-lived-intangible-assets-amortization-expense-year-three</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/finite-lived-intangible-assets-amortization-expense-year-two</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/finite-lived-intangible-assets-useful-life-maximum</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/finitelived-intangible-assets-acquired</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/form-144-stocks</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/form-n-port-stocks</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/future-amortization-expense-year-five</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/future-amortization-expense-year-four</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/future-amortization-expense-year-one</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/future-amortization-expense-year-three</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/future-amortization-expense-year-two</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/future-net-cash-flows-relating-to-proved-oil-and-gas-reserves-cash-inflows</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/future-net-cash-flows-relating-to-proved-oil-and-gas-reserves-development-costs</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/future-net-cash-flows-relating-to-proved-oil-and-gas-reserves-income-tax-expense</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/future-net-cash-flows-relating-to-proved-oil-and-gas-reserves-net-cash-flows</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/future-net-cash-flows-relating-to-proved-oil-and-gas-reserves-production-costs</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/future-net-cash-flows-relating-to-proved-oil-and-gas-reserves-ten-percent-annual-discount-for-estimated-timing-of-cash-flows</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/gain-loss-on-disposition-of-assets</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/gain-loss-on-sale-of-derivatives</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/gain-loss-on-sale-of-property-plant-equipment</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/gas-and-oil-area-undeveloped-net</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/gas-purchase-payable-current</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/gas-purchase-payable-current-and-noncurrent</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/general-and-administrative-expense</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/goodwill</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/goodwill-acquired</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/goodwill-allocation-adjustment</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/goodwill-other-changes</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/graph</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/gross-margin</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/gross-profit</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/guarantee-obligations-maximum-exposure</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/impairment-of-long-lived-assets-held-for-use</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/impairment-of-oil-and-gas-properties</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/included-in-etf</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/income-loss-from</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/income-loss-from-discontinued-operations-net-of-tax</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/income-loss-from-discontinued-operations-net-of-tax-attributable-to-reporting-entity</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/income-loss-from-discontinued-operations-net-of-tax-per-basic-share</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/income-loss-from-discontinued-operations-net-of-tax-per-diluted-share</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/income-loss-from-equity-method-investments</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/income-loss-from-equity-method-investments-net-of-dividends-or-distributions</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/income-loss-from-including-portion-attributable-to-noncontrolling-interest</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/income-loss-from-per-basic-share</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/income-loss-from-per-diluted-share</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/income-tax</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/income-tax-at-federal-statutory-rate</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/income-tax-examination-liability-refund-adjustment-from-settlement-with-taxing-authority</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/income-tax-paid-federal-after-refund-received</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/income-tax-paid-state-and-local-after-refund-received</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/income-tax-receivable</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/income-taxes-paid</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/income-taxes-receivable</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/increase-decrease-in-accounts-receivable-and-other-operating-assets</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/increase-decrease-in-allowance-for-equity-funds-used-during-construction</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/increase-decrease-in-asset-retirement-obligations</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/increase-decrease-in-estimated-future-development-costs</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/increase-decrease-in-fair-value-of-unhedged-derivative-instruments</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/increase-decrease-in-future-income-tax-expense-estimates-on-future-cash-flows-related-to-proved-oil-and-gas-reserves</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/increase-decrease-in-inventories</loc></url>
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<url><loc>https://stock.noler.com/us/stock/bkh/increase-decrease-in-other-operating-capital-net</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/increase-decrease-in-other-regulatory-assets</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/increase-decrease-in-pension-and-postretirement-obligations</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/increase-decrease-in-regulatory-liabilities</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/increase-due-to-purchases-of-minerals-in-place</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/incremental-common-shares-attributable-to-equity-forward-agreements</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/incremental-common-shares-attributable-to-equity-unit-purchase-agreements</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/incremental-common-shares-attributable-to-share-based-payment-arrangements</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/insider-transactions</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/intangible-assets-net-excluding-goodwill</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/interest-costs-capitalized</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/interest-costs-capitalized-adjustment</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/interest-costs-incurred</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/interest-expense</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/interest-income-expense-net</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/interest-paid-net</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/interest-payable-current</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/interest-rate-cash-flow-hedge-gain-loss-to-be-reclassified-during-next-12-months-net</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/inventory</loc></url>
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<url><loc>https://stock.noler.com/us/stock/bkh/investing-cash-flow</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/investment-income-interest</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/investment-owned-subject-to-option-price</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/investment-tax-credit</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/investments</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/iran-activity-notices-irannotice</loc></url>
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<url><loc>https://stock.noler.com/us/stock/bkh/jointly-owned-utility-plant-ownership-amount-of-plant-accumulated-depreciation</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/late-filing-notices-nt-10-k</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/lease-and-rental-expense</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/lease-cost</loc></url>
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<url><loc>https://stock.noler.com/us/stock/bkh/lessee-operating-lease-liability-undiscounted-excess-amount</loc></url>
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<url><loc>https://stock.noler.com/us/stock/bkh/lessor-operating-lease-payments-to-be-received-five-years</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/lessor-operating-lease-payments-to-be-received-four-years</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/lessor-operating-lease-payments-to-be-received-next-twelve-months</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/lessor-operating-lease-payments-to-be-received-remainder-of-fiscal-year</loc></url>
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<url><loc>https://stock.noler.com/us/stock/bkh/lessor-operating-lease-payments-to-be-received-two-years</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/letters-of-credit-outstanding-amount</loc></url>
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<url><loc>https://stock.noler.com/us/stock/bkh/level-3-asset-gain-loss-included-in-oci-loss</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/level-3-asset-issues</loc></url>
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<url><loc>https://stock.noler.com/us/stock/bkh/level-3-asset-value</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/level-3-liability-gain-loss-included-in-earnings</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/level-3-liability-gain-loss-included-in-other-comprehensive-income</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/level-3-liability-issues</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/level-3-liability-purchases</loc></url>
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<url><loc>https://stock.noler.com/us/stock/bkh/liabilities-of-disposal-group-including-discontinued-operation-noncurrent</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/liabilities-other-than-longterm-debt-noncurrent</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/liability-for-uncertain-tax-positions-noncurrent</loc></url>
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<url><loc>https://stock.noler.com/us/stock/bkh/long-term-investments</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/market-cap</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/material-contracts</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/minority-interest-decrease-from-distributions-to-noncontrolling-interest-holders</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/minority-interest-decrease-from-redemptions</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/minority-interest-ownership-percentage-by-noncontrolling-owners</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/net-cash-from-financing-activities</loc></url>
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<url><loc>https://stock.noler.com/us/stock/bkh/net-income-loss-attributable-to-noncontrolling-interest</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/net-income-loss-attributable-to-redeemable-noncontrolling-interest</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/net-income-loss-available-to-common-stockholders-basic</loc></url>
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<url><loc>https://stock.noler.com/us/stock/bkh/non-hedging-derivatives-gain-loss-net</loc></url>
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<url><loc>https://stock.noler.com/us/stock/bkh/noncontrolling-interest-increase-from-sale-of-parent-equity-interest</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/notes-payable-current</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/nrrtv-max-aggt-offering-pric</loc></url>
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<url><loc>https://stock.noler.com/us/stock/bkh/number-of-reportable-segments</loc></url>
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<url><loc>https://stock.noler.com/us/stock/bkh/oci-amortization-adjustment-from-aoci-pension-and-other-postretirement-benefit-plans-for-net-prior-service-cost-credit-net-of-tax</loc></url>
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<url><loc>https://stock.noler.com/us/stock/bkh/oci-before-reclassifications-net-of-tax</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/oci-before-tax-change</loc></url>
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<url><loc>https://stock.noler.com/us/stock/bkh/oci-defined-benefit-plan-net-prior-service-costs-credit-arising-net-of-tax</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/oci-defined-benefit-plans-adjustment-net-of-tax-change</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/oci-defined-benefit-plans-net-unamortized-gain-loss-arising-net-of-tax</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/oci-defined-benefit-plans-net-unamortized-gain-loss-arising-tax</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/oci-defined-benefit-plans-tax</loc></url>
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<url><loc>https://stock.noler.com/us/stock/bkh/oci-minimum-pension-liability-net-adjustment-before-tax</loc></url>
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<url><loc>https://stock.noler.com/us/stock/bkh/oci-minimum-pension-liability-net-adjustment-tax</loc></url>
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<url><loc>https://stock.noler.com/us/stock/bkh/oci-pension-and-other-postretirement-benefit-plans-benefit-plan-improvement-tax-effect</loc></url>
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<url><loc>https://stock.noler.com/us/stock/bkh/oci-reclassification-adjustment-from-aoci-on-derivatives-net-of-tax</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/oci-reclassification-adjustment-from-aoci-on-derivatives-tax</loc></url>
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<url><loc>https://stock.noler.com/us/stock/bkh/oci-reclassification-adjustment-from-aoci-pension-and-other-postretirement-benefit-plans-tax</loc></url>
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<url><loc>https://stock.noler.com/us/stock/bkh/oci-reclassification-of-defined-benefit-plan-net-transition-asset-obligation-recognized-in-net-periodic-benefit-cost-net-of-tax</loc></url>
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<url><loc>https://stock.noler.com/us/stock/bkh/proved-developed-and-undeveloped-reserves-extensions-discoveries-and-additions</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/proved-developed-reserves-boe</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/provision-for-doubtful-accounts</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/ps-ratio</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/public-float</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/public-utilities-allowance-for-funds-used-during-construction-capitalized-cost-of-equity</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/public-utilities-allowance-for-funds-used-during-construction-capitalized-interest</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/purchase-obligations-balance-on-fifth-anniversary</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/purchase-obligations-balance-on-first-anniversary</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/purchase-obligations-balance-on-fourth-anniversary</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/purchase-obligations-balance-on-second-anniversary</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/purchase-obligations-balance-on-third-anniversary</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/purchase-obligations-due-after-five-years</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/quick-ratio</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/ratio-of-indebtedness-to-net-capital</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/reclassification-from-accumulated-oci-current-period-net-of-tax</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/redeemable-noncontrolling-interest-equity-other-carrying-amount</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/redeemable-noncontrolling-interest-equity-other-fair-value</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/refundable-gas-costs</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/regulated-and-unregulated-operating-revenue</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/regulatory-assets</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/regulatory-assets-current</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/regulatory-assets-noncurrent</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/regulatory-liabilities</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/regulatory-liability-current</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/regulatory-liability-noncurrent</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/repayments-of-lines-of-credit</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/repayments-of-other-short-term-debt</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/repayments-of-short-term-debt</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/restricted-cash-and-investments-current</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/results-of-operations-depreciation-depletion-and-amortization-and-valuation-provisions</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/results-of-operations-expense-from-oil-and-gas-producing-activities</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/results-of-operations-impairment-of-oil-and-gas-properties</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/results-of-operations-income-before-income-taxes</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/results-of-operations-income-tax-expense</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/results-of-operations-oil-and-gas-producing-activities-net-income-excluding-corporate-overhead-and-interest-costs</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/results-of-operations-production-or-lifting-costs</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/results-of-operations-revenue-from-oil-and-gas-producing-activities</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/retained-earnings</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/return-on-tangible-equity</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/revenue</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/revenue-breakdown</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/revenue-from-contract-with-customer-excluding-assessed-tax</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/revenues-from-external-customers</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/revenues-from-transactions-with-other-operating-segments-of-same-entity</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/revisions-of-previous-quantity-estimates</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/right-of-use-asset-obtained-in-exchange-for-finance-lease-liability</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/right-of-use-asset-obtained-in-exchange-for-operating-lease-liability</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/roa</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/roe</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/roi</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/sale-of-stock-consideration-received-on-transaction</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/sale-of-stock-number-of-shares-issued-in-transaction</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/sales-and-transfers-of-oil-and-gas-produced-net-of-production-costs</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/sales-revenue-net</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/scorecard</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/sec-comment-letters-upload</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/sec-enforcement-actions</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/sec-filings-10-q</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/sec-filings-25-nse</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/sec-filings-8-k</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/sec-filings-px14a6g</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/sec-filings-s-4</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/secondary-offerings</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/segment-reporting-information-revenue</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/shareholders-equity</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/shares-authorized</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/shares-issued</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/shares-outstanding</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/short-sale-volume</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/short-term-borrowings</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/standardized-measure-of-discounted-future-net-cash-flow-of-proved-oil-and-gas-reserves-change</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/standardized-measure-of-discounted-future-net-cash-flow-relating-to-proved-oil-and-gas-reserves-accretion-of-discount</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/standardized-measure-of-discounted-future-net-cash-flows-relating-to-proved-oil-and-gas-reserves</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/stock-award-fair-value-assumptions-expected-dividend-rate</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/stock-award-fair-value-assumptions-expected-term</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/stock-award-fair-value-assumptions-expected-volatility-rate</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/stock-award-fair-value-assumptions-risk-free-interest-rate</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/stock-award-number-of-shares-authorized</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/stock-award-number-of-shares-available-for-grant</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/stock-award-rsu-share-based-liabilities-paid</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/stock-award-rsu-total-share-based-liabilities-paid</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/stock-award-rsu-vested-in-period-total-fair-value</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/stock-award-shares-issued-in-period</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/stock-based-compensation</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/stock-compensation-unrecognized-cost</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/stock-compensation-unrecognized-cost-recognition-period</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/stock-issued-new-shares-sold</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/stock-issued-shares-issued-shares-treasury-stock-reissued</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/stock-issued-shares-issued-value-dividend-reinvestment-plan</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/stock-issued-value-of-shares-issued-for-acquisitions</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/stock-issued-value-of-shares-issued-for-stock-awards</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/stock-options-exercisable-average-exercise-price</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/stock-options-exercisable-number</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/stock-splits</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/stockholders-equity-including-portion-attributable-to-noncontrolling-interest</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/stockholders-equity-other</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/subsidiaries</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/subsidiary-or-equity-method-investee-cumulative-percentage-ownership-after-all-transactions</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/tax-adjustments-settlements-and-unusual-provisions</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/tax-rate-reconciliation-at-federal-statutory-income-tax-rate</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/tax-rate-reconciliation-change-in-deferred-tax-assets-valuation-allowance</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/tax-rate-reconciliation-change-in-enacted-tax-rate</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/tax-rate-reconciliation-minority-interest-income-expense</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/tax-rate-reconciliation-nondeductible-expense</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/tax-rate-reconciliation-nondeductible-expense-depletion</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/tax-rate-reconciliation-nondeductible-expense-restructuring-charges</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/tax-rate-reconciliation-other-adjustments</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/tax-rate-reconciliation-state-and-local-income-taxes</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/tax-rate-reconciliation-tax-contingencies</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/tax-rate-reconciliation-tax-credit-energy-related-amount</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/tax-rate-reconciliation-tax-credit-energy-related-percent</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/tax-rate-reconciliation-tax-credits</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/tax-rate-reconciliation-tax-credits-other</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/tax-rate-reconciliation-tax-cuts-and-jobs-act-percent</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/tax-reconciliation-change-in-enacted-tax-rate</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/tax-reconciliation-deductions-other</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/tax-reconciliation-deductions-qualified-production-activities</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/tax-reconciliation-nondeductible-expense</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/tax-reconciliation-other-adjustments</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/tax-reconciliation-state-and-local-income-taxes</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/tax-reconciliation-tax-credits-other</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/taxes-excluding-income-and-excise-taxes</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/total-assets</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/total-liabilities-and-equity</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/total-long-term-debt</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/treasury-stock-common-shares</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/treasury-stock-shares</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/treasury-stock-value</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/ttl-fee-amt</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/ttl-offering-amt</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/ttl-offset-amt</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/ttl-prevsly-pd-amt</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/unbilled-receivables-current</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/unrealized-gain-loss-on-derivatives</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/unrealized-gain-loss-on-derivatives-and-commodity-contracts</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/unregulated-operating-revenue</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/utb-decrease-from-prior-year-positions</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/utb-decrease-from-settlements</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/utb-income-tax-penalties-and-interest-accrued</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/utb-income-tax-penalties-and-interest-expense</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/utb-increase-from-current-year-positions</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/utb-increase-from-prior-year-positions</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/utb-resulting-in-net-operating-loss-carryforward</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/utb-that-would-impact-effective-tax-rate</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/utilities-operating-expense-maintenance-and-operations</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/utilities-operating-expense-maintenance-operations-and-other-costs-and-expenses</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/utility-revenue</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/valuation-allowances-and-reserves-adjustments</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/valuation-allowances-and-reserves-balance</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/valuation-allowances-and-reserves-charged-to-cost-and-expense</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/valuation-allowances-and-reserves-deductions</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/valuation-allowances-and-reserves-recoveries</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/variable-interest-entity-ownership-percentage</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/wells-in-process-of-drilling</loc></url>
<url><loc>https://stock.noler.com/us/stock/bkh/write-off-of-deferred-debt-issuance-cost</loc></url>
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