Procurement · 4 min read
How to Procure VPP Capacity: An RFP Guide for Utilities and Large Loads
By VPPdirectory · Published · Reviewed and updated · Editorial contact: Jared Theaman
To procure VPP capacity, define where and when you need delivery, how much power and energy are required, how performance will be measured and who carries shortfall risk. Then compare bids on that same basis. A national portfolio total or a successful past event is not a guarantee of delivery under your contract.
Step 1: define the service at the required location
- Identify the utility, market, node, zone or distribution constraint.
- Specify operating hours, MW, duration, notice and consecutive-day requirements.
- Define import reduction versus export and any recovery or rebound limits.
- State customer operating safeguards, opt-out treatment and backup obligations.
- Identify any accreditation, market qualification or utility approval needed.
An illustrative four-hour requirement is a procurement choice, not a property of all VPPs. Technology restrictions should follow a real safety or operating need, rather than substitute for a service specification.
Step 2: distinguish the capacity evidence
| Claim | What it establishes | What still needs testing |
|---|---|---|
| Installed equipment | Equipment exists within a stated scope | Enrollment, control and available capability |
| Enrolled or nominated | Resources are signed up or submitted to a program | Eligibility, availability, delivery and the nomination period |
| Managed portfolio | A provider manages resources or load | Overlap, geography, dispatch rights and simultaneous availability |
| Peak-dispatchable disclosure | A provider reports capability under stated conditions | Duration, accreditation and applicability to your obligation |
| Measured event delivery | Performance under particular historical conditions | Weather, opt-outs, state of charge and repeatability |
| Announced target | An intended future outcome | Funding, enrollment, qualification and delivered results |
No universal percentage haircut applies to these categories. Require bidders to provide the evidence and uncertainty for the same product and season. Historical event delivery is valuable evidence, not a zero-risk capacity guarantee.
Step 3: specify measurement and qualification
Agree the authoritative meter, baseline where applicable, telemetry, timestamp conventions, missing-data treatment and settlement dispute process. Control telemetry and settlement records may differ.
Request evidence for the exact participation model and services, including distribution coordination. FERC’s rule framework and ERCOT’s separate pilot illustrate why announced access and actual qualification must be checked independently.
Step 4: evaluate operating and continuity risks
- Compare observed delivery with commitments under comparable event conditions, including lower-performing events.
- Review recruitment, equipment diversity, communications failure and customer attrition assumptions.
- Assign responsibility for integrations, cybersecurity, access permissions and incident handling.
- Check the legal counterparty, subcontractors, financial security and customer continuity.
- Define data portability and resource treatment when the contract ends.
DOE/NARUC’s DER cybersecurity baselines are a useful starting resource for a scoped review; they do not replace the buyer’s system-specific requirements.
Step 5: contract and schedule around the evidence
Define payment units, availability and performance obligations, shortfall adjustments, event limits, approved operating exceptions and audit rights. If a ramp is needed, contract for explicit milestones rather than assuming a new fleet starts at full capability.
Build the schedule from procurement rules, utility and market review, hardware readiness, customer recruitment, integration tests and the relevant season. This guide does not establish a standard three-to-six-month procurement cycle.
VPPdirectory’s capacity brief collects project requirements for review and possible introductions. It is not a capacity award or a guarantee that a provider will respond.
Compare written offers
- Download the VPP offer and bid comparison workbook (Excel)
Two editable sheets: home battery offers and utility bids. Record the agreement, payment unit, fees, backup obligations and supporting evidence. Blank cells are unknowns; no earnings or vendor scores are prefilled.
Sources and further reading
Frequently asked questions
How do you compare VPP bids fairly?
Use the same location, delivery hours, MW, duration, measurement method and risk allocation. Require dated evidence and identify overlap, assumptions and uncertainty.
Does measured event performance prove firm capacity?
No. It proves delivery under the observed conditions. Future availability, duration and contractual obligations still need evaluation.
How long does VPP procurement take?
Timing depends on the buyer’s process, enrollment, integration, utility review and service qualification. Ask bidders for a dependency-based schedule with evidence for each milestone.
What should a VPP RFP include?
Service location and schedule, power and energy requirements, measurement, qualification, customer limits, payment and shortfall terms, cybersecurity and continuity responsibilities.
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