NFE Commercial Reliable Power Microgrids
Commercial Reliable Power Microgrids (RPMs)
Phase 2 financial and bankability model | Worship Harvest worked example
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STATUS |
VERSION |
DATE |
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Core proposition |
1. Purpose of this document
This pack is intended to support the NFE weekly team review on the emerging Commercial RPM model. It captures the current product logic, a worked Phase 2 case, preliminary financing structure, customer-screening thresholds, model definitions and the decisions still required before NFE treats the model as investment-ready.
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Reference customer: Worship Harvest Ministries, using customer-supplied UEDCL bills and account movements.
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Benchmark: Sawa Energy's Bellavista solar + battery lease-to-own proposal was used as a commercial-structuring reference, not as NFE's pricing model.
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Status: Pre-feasibility / internal investment model. Site metering, EPC quotations, regulatory confirmation and credit underwriting remain required.
2. The Commercial RPM model
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Phase |
Customer outcome |
NFE activity |
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1 - Measure & Manage |
Establish an evidence-based load and outage baseline. |
Install interval metering, characterize peak/shoulder/off-peak demand, identify critical loads and quantify current backup costs. |
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2 - Reliable Power |
At least the contracted critical load remains powered through normal outages. |
Deploy storage, inverter/control infrastructure and enough PV to help finance the reliability layer. |
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3 - Energy Optimization |
Lower grid dependence and optimize energy cost/reliability. |
Expand PV/storage, optimize dispatch and progressively use the grid as a secondary source. |
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4 - Ownership Option |
Customer may choose to acquire the installed system. |
Execute a predefined buyout/transfer mechanism that first protects any outstanding lender obligations. |
3. Worship Harvest: current evidence base
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Metric |
Working value |
How to treat it |
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Average monthly electricity consumption |
~6.9 MWh/month |
Derived from four supplied detailed UEDCL bills; use as the current baseline, not a guaranteed future load. |
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Annualized electricity consumption |
~82.9 MWh/year |
Used for the current screening model. |
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Observed load mix |
~29% peak / 52% shoulder / 19% off-peak |
Useful because the 18:00-24:00 peak period exactly matches the requested six-hour backup window. |
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Recent utility payment behavior |
Bills in the supplied statement were substantially/fully cleared within the billing cycles shown. |
Positive early credit signal, but not a substitute for full credit underwriting. |
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Phase 2 reliability target |
At least 6 hours during 18:00-24:00 |
Must be validated with interval data and critical-load definition. |
4. Preliminary Phase 2 technical design
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Component |
Working design |
Rationale |
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LFP battery |
120 kWh nominal |
Provides headroom above historical average peak-period energy, plus usable-depth, conversion-loss and reliability reserve allowances. |
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Hybrid inverter |
50 kW, three-phase |
Provides headroom for instantaneous demand and motor/other transient loads that monthly bills cannot reveal. |
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Solar PV |
36-40 kWp preferred |
PV is not needed to make a 6-hour evening battery work technically; it is included because avoided daytime/peak grid purchases finance the reliability infrastructure. |
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Controls / EMS |
NFE Microgrid OS + metering |
Required for dispatch, monitoring, billing, alarms, asset health and later portfolio management. |
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Important engineering caveat |
5. Commercial model: where the RPM margin comes from
The RPM margin is not a surcharge on the customer tariff. It is the economic spread created when NFE can supply a portion of the customer's electricity at a lower effective cost than the utility tariff while preserving the customer-facing price anchor.
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Cash-flow layer |
Illustrative annual value |
Meaning |
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Customer electricity revenue |
~UGX 47.0m |
Energy sold at the utility-equivalent weighted tariff assumption. |
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Gross avoided utility purchases |
~UGX 34.8m |
Value created by direct PV plus PV shifted through storage to displace grid purchases. |
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Routine O&M allowance |
~UGX 2.1m |
Annual operating/maintenance budget. |
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Battery + inverter lifecycle reserve |
~UGX 6.9m |
Explicit reserve contribution for major component replacement rather than assuming these costs disappear. |
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NFE monitoring/billing/site overhead |
~UGX 1.2m |
Site-level software, monitoring, billing and operating support allowance. |
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CFADS (internal screening definition) |
~UGX 24.5m |
Cash flow available for debt service after the above conservative operating and reserve provisions, before debt service. |
6. Base-case bankability structure
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Item |
Working assumption |
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Installed Phase 2 CAPEX |
~UGX 143m |
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Customer contract term |
15 years |
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Senior debt |
50-55% of CAPEX preferred for early projects |
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Sponsor / investor equity |
45-50% of CAPEX |
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Target debt tenor |
10 years minimum |
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Target UGX debt rate |
<=12% if possible; concessional/project finance preferred |
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Debt Service Reserve Account (DSRA) |
6 months of scheduled debt service |
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Customer upfront equipment payment |
Zero |
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Customer tariff |
Utility-equivalent energy tariff, with contractually defined indexation |
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Ownership |
NFE/SPV during service term; Phase 4 buyout option subject to lender discharge |
7. Illustrative 55% debt case
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Metric |
Illustrative result |
Interpretation |
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Senior debt |
~UGX 78.5m |
55% of ~UGX 142.8m CAPEX. |
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NFE/investor equity |
~UGX 64.3m |
Before DSRA funding. |
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Annual debt service |
~UGX 13.9m |
Assumes 12% debt over 10 years with level annual debt service. |
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Base DSCR |
~1.76x |
CFADS / scheduled debt service. Provides material cushion above 1.0x. |
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6-month DSRA |
~UGX 7.0m |
Liquidity buffer equal to half a year of scheduled debt service. |
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Unlevered project IRR |
~15.1% |
Return on the project before debt financing, under the current simplified 15-year constant-real-cash-flow assumptions. |
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Equity IRR |
~15.6-16.0% |
Approximate result depending on how/when DSRA is released. |
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Financing conclusion |
8. Customer qualification threshold
The current model suggests a theoretical break-even/target-return threshold near 1.5 MWh/month for a customer with a load shape similar to Worship Harvest. For sales screening, NFE should use a more conservative threshold because fixed costs, site complexity, credit quality, solar yield and load shape vary.
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Monthly usage |
Screening interpretation |
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< 1.5 MWh |
Usually below current economic threshold for a stand-alone Commercial RPM Phase 2. |
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1.5-2.0 MWh |
Possible but marginal; requires especially favorable site/load/credit conditions. |
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>= 2.0 MWh |
Recommended first-pass Commercial RPM qualification threshold. |
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>= 3.0 MWh |
Strong candidate, subject to solar-compatible demand and site/credit quality. |
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Worship Harvest: ~6.9 MWh |
Comfortably above the consumption threshold; the remaining work is engineering, regulatory, credit and financing validation. |
9. Bankability risks and mitigations
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Risk |
Why it matters |
Proposed mitigation |
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Volume risk |
Customer pays for energy used; NFE debt service does not fall if customer consumption contracts. |
Lower leverage for early sites; strong customer underwriting; termination protection; consider a modest minimum annual energy commitment only where financing requires it. |
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Tariff/indexation risk |
A fixed customer tariff can become uneconomic as utility prices and operating costs change. |
Contractually mirror the applicable utility tariff structure or define a transparent indexation formula. |
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Credit/collection risk |
Energy revenue is the project cash flow. |
Credit review, payment history, deposits, remote metering, clear default/curtailment procedures and diversified portfolio. |
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Technology/lifecycle risk |
Battery/inverter replacement can destroy economics if omitted. |
Explicit replacement reserve, manufacturer warranties, standardized equipment and remote health monitoring. |
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Performance risk |
PV yield or storage availability may underperform assumptions. |
Conservative yield, performance guarantees where available, commissioning tests and reserve margins. |
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Regulatory risk |
The legal structure for on-site generation/resale/EaaS must be valid. |
Obtain Uganda-specific regulatory/legal confirmation before financial close and standardize the compliant contract structure. |
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EPC / construction risk |
Cost overruns or poor installation can impair returns and safety. |
Competitive RFQ, fixed-price scope where feasible, commissioning acceptance tests and appropriate EPC warranties. |
10. Proposed cash-flow waterfall
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Customer pays NFE for metered electricity under the EaaS contract.
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NFE/SPV pays utility/grid energy costs and other variable energy costs.
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NFE/SPV funds routine O&M and operating expenses.
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NFE/SPV funds the agreed battery/inverter lifecycle reserve.
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Remaining operating cash is CFADS for lender purposes under the internal screening model.
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Scheduled senior debt service is paid.
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Required DSRA top-up, if any, is funded.
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Residual distributable cash is available to NFE / equity investors.
11. Decisions requested from the NFE team
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Decision |
Current working position |
Team discussion |
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Commercial Phase 2 product definition |
Battery reliability + enough PV to support the economics. |
Confirm whether this becomes the standard default or remains site-specific. |
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Customer tariff promise |
Utility-equivalent tariff, not an equipment lease. |
Define exactly which utility charges are mirrored and how tariff changes flow through. |
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Reliability promise |
6-hour outage coverage for contracted critical load. |
Decide whether the product SLA should be framed as hours, availability %, or both. |
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Debt strategy |
50-55% debt for early projects; target <=12%, 10+ years. |
Confirm acceptable leverage and target lender categories. |
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Customer minimum usage |
No hard minimum in the preferred customer proposition. |
Decide whether a soft minimum annual energy commitment is acceptable when a lender requires it. |
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Phase 4 ownership |
Predefined buyout from a stated year, subject to lender discharge. |
Agree lockout year and buyout methodology. |
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Commercial screening threshold |
>=2 MWh/month first-pass screen. |
Confirm and add load-shape, credit and site criteria. |
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Portfolio/SPV structure |
Preferred long-term financing architecture. |
Decide when to establish the first RPM project/portfolio SPV. |
12. Immediate next steps
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Install/obtain interval metering for Worship Harvest and identify critical vs. discretionary loads.
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Request at least two local EPC/vendor quotations for the 120 kWh / 50 kW / 36-40 kWp design range.
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Refresh the model with quoted CAPEX, warranty terms, installation scope and realistic replacement assumptions.
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Confirm the legally compliant Uganda EaaS / on-site resale structure and required permits/licences/exemptions.
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Complete a customer credit review and obtain a longer utility-payment history if available.
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Develop the standard Commercial RPM EaaS term sheet: tariff indexation, SLA, deposit, termination, access, insurance and Phase 4 buyout.
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Prepare a lender-facing model with monthly cash flows, debt amortization, downside cases and covenant tests.
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Build a pipeline scorecard so NFE can screen commercial leads consistently before spending engineering time.
Appendix A - Model assumptions that must be refreshed before investment approval
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Assumption |
Current working value |
Validation method |
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Annual load |
~82.9 MWh |
12 months of bills + interval metering |
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Solar yield |
~1,500 kWh/kWp/year |
Site-specific PV simulation / irradiation dataset |
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Installed CAPEX |
~UGX 143m for 120 kWh + 50 kW + 40 kWp |
Competitive EPC/vendor RFQs |
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Project term |
15 years |
Customer contract negotiation |
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Debt cost / tenor |
12% / 10 years illustrative |
Lender term sheets |
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Lifecycle reserve |
Modelled explicitly |
Warranty, cycle-life and replacement-price analysis |
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Utility-equivalent tariff |
Working weighted energy price from current tariff structure |
Refresh at proposal date and define indexation |
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Customer load shape |
Historical TOU shares from bills |
Interval metering |
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Regulatory structure |
Not yet confirmed |
Ugandan legal/regulatory review |
Appendix B - Interpretation discipline
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All figures are preliminary and intended for internal screening, not a customer quote or investment commitment.
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Do not present IRR, DSCR or the 2 MWh/month threshold without the underlying assumptions; they are outputs of this model, not universal constants.
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Equipment prices, tariffs and financing costs are time-sensitive and must be refreshed before every investment decision.
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The model should eventually move from annual averages to monthly/hourly dispatch so reliability and cash flow are tested together.