Solutions / Engineering guide
Wind vs Diesel Power: Compare the Same Remote Service
A meaningful wind-versus-diesel comparison keeps the electricity service unchanged. Define the diesel-only and wind-supported candidates, then assess useful energy, remaining fuel duties and complete project scope rather than assigning a saving to every generated wind kWh.
Compare service outcomes before comparing energy-source labels.
Wind equipment can be assessed as part of a supply candidate. Its contribution, generator fuel use and remaining continuity duties require the actual resource, loads and configured equipment.
01 / Common obligation
Give both candidates the same load and continuity requirement.
State the loads supplied, output boundary, project location and period.
State the loads supplied, output boundary, project location and period. Identify required continuous service and any owner-approved flexibility. Separate an existing measured service from an expanded future requirement so the diesel-only baseline is not compared with a different wind-supported task.
List included devices and responsibilities for each candidate. A bare turbine and an operating generator installation do not share the same supply scope. NLR’s REopt context treats resources, consumption and technology assumptions as site inputs; no optimisation or verified MARSTON result is asserted here.
02 / Diesel baseline
Identify the set and the duty actually represented.
Obtain the generator and controller identity, applicable duty rating and available loading records.
Obtain the generator and controller identity, applicable duty rating and available loading records. Record operating periods, output energy and the conditions behind the fuel information. Separate measured fuel supplied to electricity generation from other fuel used at the same site.
Request consumption data for the loading states relevant to the comparison and identify unresolved starting, idle or other states included in the model. A single litres-per-kWh value from an unrelated generator cannot establish this installation’s baseline over a changing demand profile.
03 / Wind contribution
Assess what the supply can accept at the relevant times.
Use the candidate’s applicable power information and site wind evidence to create an explicitly defined generation case.
Use the candidate’s applicable power information and site wind evidence to create an explicitly defined generation case. Align it with demand and any configured acceptance restrictions. Record direct contribution, surplus and remaining demand at the same service boundary.
Do not assume all wind generation displaces generator energy or that surplus is accepted by any battery. Third-party storage requires its own ratings and interfaces. The local-use guide explains why generation and useful load contribution are different quantities.
04 / Fuel comparison
Keep consumption linked to the remaining operating states.
Construct an interval record with generator output, operating state, duration and the applicable consumption basis for each candidate.
Construct an interval record with generator output, operating state, duration and the applicable consumption basis for each candidate. Retain interpolation and missing-data assumptions. Calculate the fuel result from those states rather than deduct a fixed quantity for each wind kWh.
Caterpillar’s underloading discussion illustrates why reduced generator loading must still be assessed within its own permitted conditions. Its percentages and operating recommendations are not imported here. Fewer generator hours or lower output do not automatically establish a proportional fuel reduction.
05 / Project scope
Compare installation and access over the actual duration.
Include the wind package, tower, local works, integration, service access and transport alongside the existing or proposed diesel responsibilities.
Include the wind package, tower, local works, integration, service access and transport alongside the existing or proposed diesel responsibilities. Identify who provides fuel delivery, generator service and any end-of-project removal. Use actual proposals and clearly labelled unresolved items.
A short deployment or weak wind evidence may not justify fixed wind installation. Compare wind, solar and continued diesel supply without forcing the wind candidate into the outcome. The cost guide retains the full included period and costs without a preset price or payback.
06 / Decision record
Show which evidence supports or changes the comparison.
Report equivalent-service cases with resource, load, generator-consumption and integration assumptions.
Report equivalent-service cases with resource, load, generator-consumption and integration assumptions. Keep useful wind, remaining demand, fuel totals and unresolved service conditions separate. Scenario results should identify their inputs rather than be presented as customer measurements.
Send MARSTON the service brief, load record, generator documents, wind information and requested equipment scope. This page compares candidates; the coordination guide addresses their interface duties. No fixed fuel saving, diesel elimination or uninterrupted supply is claimed.
Continue the review with Wind Power Self-Consumption & Self-Sufficiency Metrics.
Continue the review with Wind Power vs Grid Extension for Remote Sites.
Continue the review with AC & DC Coupling for Wind Hybrid Systems.
General background: NLR REopt: site-input and multi-technology comparison context · Caterpillar: equipment-specific generator-loading context. These references explain industry concepts; they are separate from the applicable MARSTON product and project documents.
Prepare the information for this review.
Use the checklist to organise the project information. Mark unavailable items and retain document references.
| Review item | Information to provide | Purpose |
|---|---|---|
| Service boundary | Loads, period, required continuity and agreed flexibility | Compare the same obligation. |
| Diesel evidence | Set identity, states, loading and applicable fuel data | Establish the baseline. |
| Wind case | Resource, configuration, useful contribution and acceptance limits | Identify actual displacement assumptions. |
| Fuel ledger | State, duration, consumption basis and missing inputs | Make the comparison traceable. |
| Full project scope | Installation, integration, transport, service and closure | Retain the complete decision basis. |
Engineering questions.
Is wind equipment a direct replacement for any diesel set?
No such equivalence is assumed. Compare complete configurations supplying the same load and service.
Does each wind kWh save the same amount of fuel?
Fuel depends on generator states, loading and applicable consumption evidence. No fixed conversion is established here.
Do fewer generator hours guarantee proportional savings?
Not without the relevant loading and included-state assessment.
Can annual wind energy prove diesel is unnecessary?
No. Demand timing, resource gaps, configuration and continuity requirements still need assessment.
Can a short remote project favour another option?
Yes. The usable period, resource, installation and service scope may not support wind.
What should accompany a comparison result?
Its common service definition, inputs, configured duties, fuel method, complete period and unresolved assumptions.
Technical enquiry
Bring your project information to the discussion.
A meaningful wind-versus-diesel comparison keeps the electricity service unchanged. Share the available information and the equipment scope you want reviewed in a technical quotation.