Managed Capacity Testing Service

Your ASTM E2848 Test, Fully Handled

We run the capacity test against your PPA or EPC contract requirements, generate the report — and you get full visibility into every step through the HelioTest platform.

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Peter, founder of HelioTest

30 minutes with Peter — PV engineer 10+ yrs C&I solar.

Let's talk about your site, no commitment.

Prefer to run tests yourself? → Explore self-serve plans

What You Receive

A complete, audit-ready test package

Everything you need to demonstrate compliance and close out your project — with no black boxes.

  • Auto-generated PDF report

    Structured, ASTM-compliant, ready to share with investors or offtakers.

    See a sample report (PDF) →
  • Full data export

    Raw filtered dataset, regression outputs, and test statistics — yours to keep.

  • Live project access

    Your project stays in the platform. Review results, explore the analysis, run what-ifs.

Four Steps from Data to Signed-Off Report

We handle the methodology. You handle the project. No spreadsheet wrangling, no back-and-forth on data formats.

1

Share Your Data

Send us your measured timeseries data (inverter power, POA irradiance, temperature, wind speed) and your PVsyst hourly simulation output.

2

We Configure the Test

We set up the test parameters — reporting conditions, regression window, filtering criteria — in alignment with your contractual requirements.

3

Test Execution & QA

The test runs on the HelioTest platform. We review the results, check data quality flags, and validate the output before delivering anything.

4

Delivery & Handover

You receive your PDF report, data export, and full access to the live project in the platform — with complete traceability of every calculation.

Want to run this workflow yourself? Explore our self-serve plans →

Not Another Black-Box Consultant Report

Traditional consulting firms deliver a PDF. You have no idea what was filtered, what was assumed, or whether the method holds up to scrutiny. We show you everything.

HelioTest Service Traditional Consultant
ASTM E2848 compliant methodology Built in Varies by firm
Full calculation transparency Platform access PDF only
Raw data & regression export Included Rarely provided
Reproducible, auditable process Platform-enforced Manual, opaque
Option to run future tests yourself Upgrade any time Not available

Built for C&I Solar Teams Who Need Results

The managed service is the right fit if any of these sound familiar.

Solar Developer

Proving system performance to your offtaker

You have a PPA with a capacity guarantee clause and need a defensible, compliant test result to close out your project — without tying up your engineering team.

EPC Contractor

Delivering on contractual performance obligations

You've commissioned the system and need the capacity test as part of project handover. If your contract also calls for an availability test, we run both handover tests on the same platform.

Asset Manager / Investor

Independently verifying system output

You're acquiring or monitoring assets and need a third-party capacity assessment with full methodological transparency — not a number on a slide deck.

Frequently Asked Questions

Common questions about the managed testing service

At minimum: measured AC power output, plane-of-array (POA) irradiance and ambient temperature in a timeseries format and the as-built PVsyst model. We accept CSV uploads or can connect directly to SolarEdge or AlsoEnergy via API.

Typically 3–5 business days from data receipt to final report delivery, depending on data quality and the complexity of the test configuration.

Scope is set in the scoping call and written into your fixed quote, so you know what is included before you commit.

That's where platform access becomes invaluable. Rather than just receiving a "fail" result, you can explore the analysis in HelioTest to understand exactly which data points drove the outcome and why.

Yes. The managed service gives you a live project in the platform. Once you're familiar with the tool and process, you can upgrade to a self-serve plan and run your own tests going forward — at a fraction of the per-site cost.

HelioTest implements the ASTM E2848 standard (with ASTM E2939 guidance for reporting conditions). If your contract specifies this standard, we're fully aligned. For bespoke contractual requirements, reach out before submitting.

Yes — as an add-on to a capacity test engagement or standalone. The test is configured to your contract's definitions (irradiance threshold, export threshold, exclusions, guaranteed percentage), and you receive the same transparent package: PDF report, minute-by-minute audit table, and an Excel calculator that recomputes the result from the raw data. No PVsyst model is needed.

Traditional consultants deliver a report with no visibility into the underlying process. With HelioTest, the methodology is enforced by the platform — you can see every filter, every regression, every result. It's auditable by design.

Ready to Run Your First Test? Let's Talk.

Fixed per-site pricing. Turnaround in days, not weeks.

Engagements start from $2,500 per site. Scope and price are fixed in your quote after a 30-minute scoping call.

Book a Consultation
Let's talk about your site, no commitment
Let's talk about your site, no commitment Book a Consultation