◉ Available · Amsterdam ↔ PhillyEnergy · Real Estate · Hospitality

I build the systemsthat make operatorsmore money.

Juan Diaz, LLC is the holding I use to ship revenue engines for operators in energy, real estate, hospitality and adjacent industries — as my own products, or as a partner for yours. Construction-trained. Operator-built. One founder, five phases, zero fluff.

Book a blueprint call →See the work →
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Revenue engines ✦ Energy · Real estate · Hospitality ✦ Construction-trained ✦ Five phases ✦ Blueprint before build ✦ Shipped, not pitched ✦Revenue engines ✦ Energy · Real estate · Hospitality ✦ Construction-trained ✦ Five phases ✦ Blueprint before build ✦ Shipped, not pitched ✦
◉ 00 — Story

“Most businesses don't have revenue
problems. They have blueprint problems.”

I grew up between two worlds — the Netherlands and a family that taught me another one. My people called me el cazador. The hunter. Patient. Specific about what I'm after.

I trained as a construction manager — how to plan impossible builds, sequence the moves, and ship without breaking the budget or the people. What nobody tells you is that the discipline transfers everywhere. Every business is a construction project.

Most operators I meet aren't short on ambition. They're short on blueprint. Revenue leaks in the same five places, every time: no survey, no phasing, no commissioning, no control room, no honest numbers. So the business runs on hope instead of instruments.

I started Juan Diaz, LLC as the holding for the opposite of that. I ship revenue engines across energy, real estate, hospitality and adjacent industries — sometimes as my own products (Voltafy, Performance Tracker, Help Mij Besparen, Salderingsregeling 2027), sometimes as a partner for yours. Same five phases every time.

The bet is simple: the next decade of great software gets built by operators, for operators. I'd rather be one of them than sell to them — and bring a few along while I'm at it.

Juan
Juan Stefan DiazSole founder · Juan Diaz, LLC · Construction-trained operator
◉ The deadline
Salderingsregeling ends January 1, 2027 — and the Dutch energy map changes overnight.
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— Ticking live from your browser · target 2027-01-01 00:00 CET · this is the window we're building in.
◉ 01 — Where I work

Every sector with operators
and a P&L.

Different industries, same leaks. I focus where the operational complexity is highest and the software is weakest — that's where the revenue is hiding.

— 01 / Energy

Energy & solar

Solar portfolios, installers, households, grid operators. Post-salderingsregeling software that actually earns its keep.

SolarInstallersMeteringPost-2027
— 02 / Real Estate

Real estate

Portfolio dashboards, retrofit planning, ESG reporting, tenant ops. Numbers the asset manager can actually trust.

RetrofitPortfolioTenant opsESG
— 03 / Hospitality

Hospitality & revenue

Channel intelligence, revenue ops, staff tooling, guest data. Turn the gut-feel pricing into an honest instrument.

Revenue opsChannelsStaffGuest data
— 04 / Adjacent

Anywhere else

Logistics, retail, field services, frontier industries. If it has operators and bad software, the playbook applies.

Field opsFleetRetailServices
◉ 02 — How I work

Construction-trained.
Every build in five phases.

The same discipline that keeps a building on time and on budget is the one I apply to your revenue engine. No phase skipped, no number unverified.

01 / Survey
Walk the site.

See what's actually going on before touching anything. Find the leaks, the workarounds, the tribal knowledge. Every real plan starts here.

02 / Blueprint
Draw the plan.

Sequence the moves. Every phase has a number attached. No vague "strategy deck" — a build plan a contractor could read.

03 / Build
Ship the systems.

Dashboards, automations, products, whole engines. Built to run at 3am on bad wifi, not just in the demo.

04 / Commission
Stress- test.

Verify every number. Run the edges. Nothing gets called "live" until the system is honest under load.

05 / Operate
Stay in the control room.

Monitor, tune, improve weekly. A revenue engine isn't a project — it's a living system. I stick around.

◉ Transmission 001— Building for 2027 / Amsterdam → Everywhere
Honest energy tools Built by operators Shipped, not pitched Honest energy tools Built by operators Shipped, not pitched
Chapter 01 / 03
◉ Chapter 01 — The Signal

Every real tool starts with someone listening to the field.

Long before Voltafy, I was the one running the dashboards — at 3am, on bad wifi, watching numbers lie about what was really happening on a roof somewhere in Zwolle. That's where the hunt started.

— 2021–2023 · the early years
◉ Chapter 02 — The Build

Stop complaining. Build what you wish existed.

Four products. One standard. No wasted screen. Voltafy as the platform. Performance Tracker for owners who want the real number. Help Mij Besparen for households drowning in invoices. Salderingsregeling 2027 as the public guide.

— 2024–2026 · Juan Diaz, LLC
◉ Chapter 03 — The Bet

Four million Dutch rooftops are about to need new software.

The salderingsregeling ends January 1, 2027. The rules change, the math changes, and every household with solar wakes up on a different grid. I intend to be the one who shipped what they need first — and shipped it honestly.

— 2027 and after · the reason all of this exists
◉ 03 — Ventures

The playbook,
in motion.

Live products under the holding — each one the five-phase playbook applied to a real sector. Proof, not pitch. Visit any of them.

— 001 / Platform
Live

Voltafy — energy intelligence for Dutch households and installers.

The platform layer. Live monitoring, yield analytics, and a tight operator interface for the people keeping solar and battery systems honest. The flagship of the holding.

voltafy.nl
— 002 / Dashboard
Live

Performance Tracker — see what your system is really doing.

Real-time yield, loss analysis, and alerts for solar owners and installers. Honest numbers, no vendor spin.

performancetracker.nl
— 003 / Consumer
Live

Help Mij Besparen — lower your energy bill, in plain Dutch.

A calm, honest tool that tells Dutch households exactly where their money is leaking — and the moves that actually fix it.

helpmijbesparen.nl
— 004 / Policy
Live

Salderingsregeling 2027 — the phase-out, explained.

The public field guide to the Dutch net-metering change. What it means, when it hits, and what solar owners should actually do about it.

salderingsregeling2027.nl
— 005 / US
Shipping

Philly — the US ops dashboard.

The stateside sibling. Field-first interface for ground teams — dispatch, routing, live status, built to stay alive on bad networks. The first product under Juan Diaz, LLC’s US arm.

philly.juandiazllc.com
◉ Live · right now

The operation, in <em>real numbers</em>.

5ventures shipping
4sectors in operate
€0in vendor kickbacks
1founder, every surface
07
Years shipping
0+
Live products
5
Phases every build
0027
The deadline
◉ What changed in production

Numbers from actual operators.

Anonymized by default. Every metric is from a live engagement — if we can’t attribute it, it doesn’t go here.

+38%

Lead-to-call conversion after replacing a 4-tool stack with one CRM + WhatsApp flow.

Dutch solar installer90 days
3.2x

Pipeline velocity once field team + office shared the same deal state in real time.

NL/BE energy broker6 months
−61%

Time-to-quote after automating data handoff from intake to survey to proposal.

Residential battery installerQ1 rollout
€0

Additional SaaS spend — the savings from retired tools funded the rebuild.

Multi-location operatorYear one
◉ 04 — Signals

Field notes,
build logs.

Short essays on designing operator tools, shipping dashboards that survive real environments, and running small studios at speed.

— 2026.04 · Essay

Why operator tools should feel like instruments, not SaaS.

Read →
— 2026.03 · Build log

Every business is a construction project. Here's the five-phase build plan.

Read →
— 2026.02 · Note

A holding company as a creative container.

Read →
◉ Work with me

Ready to find the revenue you're leaving on the table?

One founder. Five phases. Zero fluff. The blueprint call is free and blunt. If I can help, I will. If I can't, I'll tell you who can — and send you on your way.

Book a blueprint call →See the playbook →
◐ Monthly, blunt, useful. No spam, ever.
FAQ

Operator questions, answered

What does Juan Diaz, LLC actually do?

Juan Diaz, LLC builds revenue engines for operators — the CRM, automations and growth infrastructure that turn a team of humans plus software into a compounding system. We operate as a holding company with internal ventures (Philly CRM, Voltafy, Help Mij Besparen) and a small number of operator engagements per year.

Which industries do you work with?

Energy (installers, solar, batteries), real estate (brokerages, property management), hospitality (multi-location), and operator-heavy adjacent industries like logistics, trades and home services. The common thread is a field team that generates revenue and an office that tries to make sense of it.

Do you build from scratch or configure existing tools?

Both — we match the tool to the job. Core workflows that differentiate your business get built (or heavily customised). Commodity workflows (email, accounting, payroll) get the cheapest reliable tool that does not break your data contracts. The moat lives in the integration layer plus two or three core flows — not in owning every seat of every SaaS.

What is a blueprint call?

A free 30-minute call where we map your current revenue flow end-to-end and identify the two or three leverage points. Blunt, structured, no slides. You leave with a one-page diagnosis regardless of whether we work together afterwards.

Where are you based?

Operating out of the Netherlands with clients across the EU and occasional US engagements. Remote-first, with on-site time for discovery and rollouts when it moves the needle.

◉ 05 — Direct line
juan@juandiazllc.com
LinkedIn — /juanstefanInstagram — @diazelcazadorKompas Agency
◉ Book a call →
LiveAMS —Grid stable2027 · —dv1.0
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