Solar + BESS design studies

From site polygon to a complete, reconciled design study.

Utility-scale PV and PV + BESS — or PV only. One package: site layout on real terrain, electrical design, P50/P90/P95 yield and project finance, with a full drawing set. Feasibility-grade and lender-ready; not issued for construction.

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PROJECTProject

SCOPEDesign package

REGIONRegion

SHEET00 — COVER

REV—

Why this study

Complete, not partial.

Layout, civil, electrical, energy and finance come out of one model of one site. Nothing is stitched together from separate tools, so the capacity on the site plan is the capacity in the yield and the capacity in the pro-forma.

Fast where it counts.

Our engine turns a site polygon and a point of interconnection into a full design in a fraction of the time a conventional workflow takes. The time you wait is engineering review, not modeling.

Traceable.

Every number in the report points to a catalog datasheet, a code reference or a declared assumption. Every run is reproducible: same inputs, same hash, same numbers. An independent engineer can audit it line by line.

Capability scheduleevery project

P50·P90·P95

exceedance-rated annual energy

N1 · N2

two study levels: screening, then feasibility

SLD · DXF · PDF · CSV

drawing set: single-lines, schedules, BOMs

Every number → formula + datasheetFeasibility-grade · not for construction

Two study levels

01 / STUDY LEVELS

N1 · SCREENING

Is this site worth more money?

Preliminary layout and capacity at the POI cap
Public elevation data
PVGIS meteorology
Annual P50 yield
Order-of-magnitude CAPEX and LCOE

Delivered → within 5 business days of complete inputs.

N2 · FEASIBILITY

Numbers a lender and a utility reviewer can work from.

Everything in N1, plus:
Roads and equipment pads, cut/fill earthwork
MV and LV collection sized to NEC with voltage drop and hourly I²R losses
Single-diode energy model with P50/P90/P95
Project finance with debt sized to target DSCR
Bills of materials and long-lead equipment list
An interconnection data sheet (CAISO Appendix 1 structure)
The full design-basis drawing set with the engineering report

Delivered → within 15 business days of complete inputs.

What's in the package

02 / DELIVERABLES

REPORT

Engineering report

Design basis, key results, energy loss waterfall (POI export cap as its own line), CAPEX build-up with provenance, interconnection cap, terrain and earthwork, interior roads, MV and LV collection, BESS dispatch, interconnection data sheet, what the study asserts and what it does not.

DRAWINGS

Drawings(PDF + layered DXF)

C-01Combined site plan: tables, inverter/padmount blocks, roads, pads, MV feeders, substation, BESS yard
C-02Equipment schedule
C-03Details: typical block and tracker row section
E-01Plant single-line (PV + BESS)
E-02PV single-line: inverters → padmounts → MV feeders → GSU → POI
E-03BESS single-line
E-100Typical array area, string layout

SCHEDULES

Schedules(in the set, CSV on request)

PV and BESS cable schedules: conductor, length, ampacity, voltage drop
PV and BESS bills of materials; BESS equipment schedule
Long-lead equipment list
Interconnection data sheet: capacities, losses, auxiliary load and reactive capability at the POI, in the CAISO Appendix 1 structure

FINANCE

Finance

LCOE, NPV, IRR, DSCR-sculpted debt; P50/P90/P95 from an 8760-hour model.

The engine

03 / THE ENGINE

Our in-house engine designs the plant as one system:

PV and BESS co-designed on the same site and the same POI; PV-only is a first-class case.
String and central inverters; single-axis trackers and fixed tilt.
Capacity sized to the interconnection cap — the POI limit is a contract, not a suggestion — with the export cap shown as its own line in the loss waterfall.
Conductors sized per NEC with declared ampacity, voltage-drop and loss rules; equipment from catalog datasheets, overridable by your specification.
Deterministic and version-locked: each run is signed by the hash of its inputs, so a revision is a diff, not a new study.
CAD-compatible outputs (DXF) and plain CSV for your own models.

The package ends at the point of interconnection. Substation internals, protection settings and the utility's interconnection studies are left to the specialists who own them.

What we need from you

04 / INPUTS

Site boundary with coordinate system (KML, SHP, DXF or coordinates) and any exclusions you already know
Point of interconnection: location, voltage, MWac limit
Target DC/AC ratio, and BESS MW / MWh — or PV only
Equipment preference, if any (module, inverter, tracker); otherwise we propose from catalog
Anything you already have: topographic survey, geotech summary, PPA terms

Elevation data (USGS 3DEP) and meteorology (PVGIS / NSRDB) we obtain ourselves if you don't have site measurements.

What's not included

05 / EXCLUSIONS

So that what is included is credible:

Construction documents (IFC), structural pile design, geotechnical investigation, hydrology and drainage design
Permitting, environmental and land studies
The utility's interconnection studies (we deliver the data sheet, not the study)
Substation internals, protection and SCADA design
Tax-equity, ITC/PTC and depreciation modeling (the finance module is a design-economics and bankability instrument)
Auxiliary loads are reported as "not modeled" unless you supply equipment data

How it works

06 / PROCESS

01INPUTS

Inputs.

You send the site and POI data above. We confirm scope and level (N1 / N2) by email.

02DESIGN

Design.

The engine builds the plant; the engineer reviews, adjusts and signs off.

03DELIVERY

Delivery.

Report, drawings and data files. One round of comments is included; further revisions and alternative scenarios are quoted per run.