Folio Grid
The AI investment analyst · BESS & hybrids

A six-week IC memo, delivered in 72 hours.

Folio Grid is the diligence platform for infrastructure investors screening utility-scale BESS and hybrid renewables. One engine for grid-connection red flags, merchant revenue modelling, and counterparty review. One output: an IC-ready memo with a senior analyst signature on every page. Built for private-equity infrastructure desks, super and pension funds, and sovereign co-investors across the NEM, ERCOT and the GCC.

SAMPLEFolio GridIC MEMO · UTILITY-SCALE BESS · NEMSIGNED OFFPREPARED FOR[ Confidential · Institutional investor ]DELIVEREDT − 3 daysUtility-scale BESSNEM · Hybrid co-locatedRECOMMENDATIONProceed with conditions · Amber riskGRID RED FLAGSSCR at POCWithin methodology thresholdSystem strengthShortfall flagged · remediableMLF trajectoryMonitor, downward trendDMAT exposureClear of mandatory subsetREVENUE DISTRIBUTION · P10 / P50 / P90Y1Y2Y3Y4Y5Y6Y7CONFIDENTIAL · NOT FOR DISTRIBUTION · SAMPLEPAGE 01

Built for investors operating across

  • AEMO
  • AEMC
  • AER
  • TNSPs
  • ERCOT
  • ISO-NE
  • CAISO
  • MISO
  • PIF
  • Masdar
Practice

Redefining how institutional capital screens battery storage.

“The investment-committee read on a utility-scale BESS has always been stitched together by hand, an IE report here, a revenue model there, an interconnection opinion somewhere else. We build the practice that delivers it as one defensible memo.”

Pipeline intelligence against the AEMO register. Static and dynamic grid screens calibrated to the current ISP. Revenue benchmarking across NEM dispatch. Every finding traceable to a methodology note. Every memo signed off by a senior analyst before release.

De-risk earlier

Screen every project in your coverage against a consistent red-flag engine. Catch system-strength, SCR and MLF issues at enquiry stage, not six weeks into the IE report.

Decide faster

Full IC-grade memo inside 72 hours. Bankable revenue distribution, grid read, counterparty review and a clear recommendation, all in one document shaped for the committee.

Allocate with conviction

Portfolio-wide monitoring, scenario and sensitivity analysis, and a methodology open enough for your internal engineer to push back on. Institutional rigour, not a black box.

The problem

The current diligence model is too slow, too expensive, and was never built for batteries.

Every infrastructure investor evaluating a BESS or hybrid project today pays for an independent engineer’s report their analyst barely reads, a financial model their analyst rebuilds from scratch, and a market report written for a different audience. Investors screen roughly fifty projects to approve five, so most of that spend dies on deals that never reach IC.

A$150k to A$500k
Typical per-deal diligence spend

Independent engineer's report plus financial model plus market report, rebuilt every cycle.

6 to 10 weeks
Turnaround per report

Investors screen roughly fifty projects to approve five. That is a pipeline clogged by bespoke reports.

~90%
Of DD spend wasted on deals that die early

No product exists that generates an IC-grade memo on-demand at the screening stage.

The solution

An integrated diligence practice, delivering one IC-grade memo.

Folio Grid collapses the screening-to-IC workflow into three steps. Every deliverable is reviewed and signed off by a senior analyst before release. Independent technical engine, not a wrapper on a third-party SaaS stack.

  1. 01

    Ingest project datapack

    Site, point of connection, MW/MWh, offtake or tolling structure, OEM, target COD, lodged once with our analyst desk.

  2. 02

    Integrated analysis

    Our proprietary red-flag and revenue engines run static and dynamic screens on an open-source technical core. Every output is traceable.

  3. 03

    IC-grade memo

    72-hour SLA. Grid red flags, revenue distribution, counterparty risk, sensitivity table, clear recommendation, signed off by a senior analyst.

Positioning

The diligence landscape has four corners. No vendor occupies the middle.

Institutional investors screening a utility-scale BESS today must stitch four separate vendors into one IC paper, manually, across weeks of analyst time. Folio Grid is built for the middle: an integrated diligence platform that sits across all four corners and delivers the bankable read in days, not weeks.

Grid-code automation

Gridmo

PSS®E / PSCAD / PowerFactory compliance workflows for the proponent engineering team.

Interconnection data

Enverus (Pearl Street), Nira, GridUnity

ISO-side queue intelligence, cluster studies, and administrative workflow.

The middle

Folio Grid

Integrated grid, revenue, counterparty and IC-memo layer, decision-grade, human-reviewed.

Bankable IE reports

DNV · Sargent & Lundy · AFRY · Fichtner · Everoze

Human-authored technical due diligence for lenders, delivered over 6 to 10 weeks.

BESS revenue analytics

Ascend · Modo · Aurora Energy Research

Merchant dispatch modelling and revenue forecasts for investors and insurers.

We do not compete with the IE brands on bankable reports at financial close, we partner with them. We do not compete with Ascend, Modo or Aurora on wholesale revenue curves, we license and integrate them. What we own is the layer that turns all four streams into a single, defensible investment-committee deliverable.

What makes it defensible

Built to the standards an investment committee actually applies.

“AI-assisted diligence” as a category is commoditising fast. Defensibility comes from four specific commitments, each of them aligned with the principles in DNV’s 2024 recommended practice on AI-enabled systems assurance.

Verified reasoning traces

Every output links back to a methodology note, a data source, and a specific assumption. If your engineer wants to push back on an SCR calculation or an MLF trajectory, they can read exactly what we did.

Templated against lender precedent

Our IC memo template is calibrated against deliverables accepted by Australian super funds, NEM project-finance lenders and cross-border co-investors. Decision-grade, not novel.

Explicit P50 / P90 quantification

We do not ship single-point revenue numbers dressed up as fact. Every revenue line and every red-flag severity is tied to banker-standard confidence intervals and sensitivity bands.

Human-in-the-loop attestation

Every memo is signed off by a senior power-systems or markets analyst before release. Platform-augmented, not platform-autonomous, aligned with the principles published in DNV-RP-0671.

Who we serve

Built for institutional investors writing meaningful cheques.

Our practice works across four audiences with one technical layer, private-equity platforms, super and pension funds, investment-bank coverage teams and sovereign co-investors. Every engagement is shaped to the investor’s mandate.

High-floor boardroom with long table and city view

Private-equity infrastructure

KKR, Brookfield, BlackRock Infrastructure and Macquarie-style platforms. Decision-grade screening on NEM pipelines and IC-ready memos on priority assets.

  • Pipeline screening across BESS + hybrid coverage
  • IC memos on short-listed projects
  • Portfolio monitoring post-deployment
Market data on a high-resolution trading screen

Super funds and pension infrastructure desks

IFM, QIC, Cbus, HESTA, CDPQ, OTPP-style mandates. An independent technical voice on domestic capital deployed into NEM storage.

  • Independent read on lead-sponsor diligence
  • NEM pipeline intelligence for domestic mandates
  • Revenue scenario work for deployed assets
Financial-district glass office towers from below

Investment banks and deal teams

Macquarie, Morgan Stanley and Goldman Sachs infrastructure coverage groups. Independent technical layer on mandated transactions.

  • Confidential red-flag reads for deal teams
  • Commentary on counterparty-side IE reports
  • Rapid turn-around on mandate-stage questions
Analyst reviewing technical data on a tablet

Sovereign and strategic co-investors

Masdar, ACWA, Mubadala-backed vehicles and similar cross-border co-investment platforms. Independent technical layer on allocations into AU / US.

  • Cross-border diligence on NEM and ERCOT projects
  • Strategic co-investment technical read
  • Memo-grade output for sovereign IC structures
Coverage

NEM first, with coverage extending into ERCOT and the GCC.

Our Australian practice operates across every NEM node, coverage anchored in the AEMO register, the ISP, and the regional constraint equations that actually determine which projects connect. International coverage extends into the US and the Gulf for clients operating across those markets.

ERCOTEXTENDINGGCCEXTENDINGNEMACTIVE
Primary coverage

Australia · NEM

Pipeline, red-flag and revenue coverage built first for NSW, VIC, QLD, SA and TAS nodes. Calibrated against the current AEMO register and ISP trajectory. This is where the engine is furthest along today.

Coverage extending

United States · ERCOT

Revenue and technical coverage extending into ERCOT nodal through 2026. The energy-only market structure maps closely onto our NEM stack. We ship an ERCOT pilot ahead of opening paid engagements there.

Coverage extending

Gulf Cooperation Council

Project coverage in preparation across KSA, UAE, Oman and Jordan tenders for sovereign and strategic co-investors. Market support layered on as design-partner demand concentrates there.

NEM regions covered
NSW · VIC · QLD · SA · TAS
Public data sources
AEMO · AEMC · AER · ISP
Technical core
pandapower · PyPSA
Why now

A genuine, well-defined whitespace, and it is closing fast.

BESS bankability standards are still being written. Solar and wind methodology is oligopoly-locked under DNV and UL, but batteries remain open. Between the NEM’s Capacity Investment Scheme, the 2024 ISP build-out, ERCOT’s 40 GW BESS queue and the five converging signals below, the institutional diligence layer for BESS is being defined right now, and no incumbent is productised enough to own it.

~80 GW

BESS pipeline is larger than IE capacity

NEM BESS to financial close sits at 15 to 20 GW; ERCOT at 40+ GW; GCC BESS-mandated solar at ~25 GW under development. No IE roster in the world can clear that volume at A$150k and six-to-ten weeks per project.

0 of 40+

No vendor owns the full stack

Across 40+ players we mapped (Gridmo, Pearl Street, Nira, Ascend, Modo, Aurora, DNV, Sargent & Lundy, AFRY, Fichtner, Everoze, Enverus), none combine automated grid-connection analysis with bankable investor-grade DD under one integrated deliverable. Stitching is always manual, across multiple advisors.

6 to 10 wks

IE brands remain un-productised

Sargent & Lundy runs the deepest US in-house PSCAD / PSS®E shop, AFRY owns APAC with 750+ staff and BID3, DNV publishes the GenAI assurance standard. None have shipped a commercial product. The turnaround has not moved in fifteen years.

US$130M

Capital is underwriting the thesis

DOE AI4IX (~US$30M, closed January 2025) and National Grid Partners' US$100M AI-startup fund (announced March 2025) explicitly target AI for interconnection review. Regulatory and utility capital is flowing into this exact whitespace.

March 2025

Pearl Street to Enverus validates it

A $1B+ SaaS buyer paid to consolidate interconnection automation into a broader renewables-data stack. Commercial precedent for the integrated diligence thesis, with one fast-follower (Enverus) and one gap (the bankable IE layer) still open.

Methodology

Independent technical layer. Open-source core, proprietary screens.

Folio Grid runs in-house static and dynamic screening on pandapower and PyPSA, calibrated against public AEMO data and the current ISP trajectory, plus our proprietary red-flag and revenue methodology. Every memo is defensible under IC scrutiny because every finding is traceable to a methodology note, not a third-party black box, and not a wrapper on anyone else’s SaaS.

Read the methodology
Insights

Field notes on BESS diligence, NEM markets, and the methodology as we build it.

All insights
Methodology18 April 2026·6 min read

Why IC memos for BESS break the IE-report model

Independent engineer's reports were built for project finance on solar and wind. They were not built for batteries, and they were not built for the screening stage. Here is the structural gap.

Continue reading
Market9 April 2026·8 min read

NEM connection-queue reality check: what the AEMO register actually tells you

Treating the AEMO connection register as a proxy for project reality is a common mistake. A guide to reading it the way our red-flag engine does.

Continue reading
Methodology28 March 2026·7 min read

Reading a system impact study in an afternoon, not a week

The structure of an ISO system impact study is the same every time. The parts an investor actually needs are small and predictable. A field guide for analysts on the investor side.

Continue reading
Revenue12 March 2026·9 min read

P10, P50, P90 and the quiet violence of point estimates

A battery revenue number presented as a single figure hides more than it reveals. A practitioner argument for distribution-first underwriting, with a worked example from a merchant NEM site.

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Market24 February 2026·5 min read

Interconnection is a pricing problem, not an engineering one

Connection queues clear on economics, not merit. The engineers solve the study. The investors price the risk. A note on what that means for how investors should screen their pipelines.

Continue reading
Methodology10 February 2026·10 min read

The 72-hour IC memo: what the tooling stack has to get right

Cutting a six-week workflow into a three-day one is not a productivity story. It is an architecture story. What the ingestion, orchestration and review layers have to look like for a memo to clear on a compressed clock.

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Folio Grid · Institutional diligence for BESS and hybrids

Engineered in Australia. Built for the investment committee.

If you’re evaluating a NEM BESS or hybrid project, building a screening process your analysts can actually trust, or looking for an independent technical voice on a deal, we’d like to speak.