CAD for solar installers
Panels + battery + heat pump + inverter on one building model. €99 lifetime.
Diaz Editor: 3D + 2D CAD for solo and small-firm solar installers worldwide. Sketch the building, place panels on the roof, drop battery and inverter in the meter cupboard, generate the permit-pack PDF + DXF for the contractor. €99 founding lifetime. No subscription, no Aurora-tier price, no OpenSolar cloud lock-in.
Solar installer use cases
- Residential PV + battery (0-30 kW): Sketch the roof, place panels, drop the battery in the meter cupboard, run cable paths. Generate the client PDF in 15 minutes.
- Solar + heat pump + EV integration: One project covers PV, ATW heat pump, EV charger, and home battery. Cable runs visible across disciplines.
- String sizing and permit packs: Built-in string calculator + PDF permit pack. NL: NEN1010 references. US: NEC inverter sizing. ES: RD 244/2019.
- Post-saldering 2027 design (NL): Battery-first sizing for households losing salderingsregeling. Three household profiles pre-modelled.
- Client proposals: 3D view of the proposed system wins jobs against shops sending Word docs. Founding members report 20-40% close-rate uplift.
- Sub-contractor handoff: DXF export to electricians + roofers separately, layer-per-discipline.
Why solar installers choose Diaz Editor over Aurora / OpenSolar
- Vs Aurora Solar: €99 founding vs $9,540-$15,540 over 5 years. Aurora wins for utility-scale + LIDAR + NEM 3.0; Diaz wins for solo + residential + EU markets.
- Vs OpenSolar: Both affordable, but OpenSolar is cloud-only with hardware-distributor monetisation pressure. Diaz is local-only, no upsells, no API price changes (which happened April 2026).
- Vs PV*SOL premium: PV*SOL wins for engineering-grade simulation. Diaz wins for design + permit-pack delivery at one-time price.
- Vs Solar Monkey NL: Solar Monkey is proposal-focused cloud. Diaz is desktop CAD for the full design-to-handoff workflow.
- Multi-discipline: solar + battery + heat pump + electrical + plumbing + structural in one project. Single-discipline tools charge $79-$200/month each.
- Local-only — client roof images, addresses, system designs stay on your machine. GDPR-friendly by architecture.
Compare in detail: vs Aurora Solar · vs OpenSolar · vs PVsyst · vs Helioscope · vs SketchUp Solar.
5-year cost: solo solar installer
| Tool | 5-year cost (1 seat) |
|---|---|
| Aurora Solar Basic ($159/mo) | $9,540 |
| Aurora Solar Premium ($259/mo) | $15,540 |
| HelioScope Basic ($159/mo) | $9,540 |
| SurgePV ($633/user/yr) | $3,165 |
| OpenSolar (free + API fees post-April 2026) | variable |
| Diaz Editor Founding Beta | €99 (once) |
| Diaz Editor Pro (regular) | €997 (once, 3 seats) |
Pricing
Pro
Team
Frequently asked questions
Why pay €99 if OpenSolar is free?
OpenSolar is cloud-only, monetised via hardware distributors. Your client data lives on their servers, you see upsell prompts, you're locked in (April 2026 they introduced paid API access). Diaz is one-time, fully local, no upsells.
Is Diaz Editor really cheaper than Aurora over 5 years?
Aurora Basic $159/mo × 60 = $9,540. Aurora Premium $259/mo × 60 = $15,540. Diaz Editor founding €99 once. Save €8,000-€14,000.
Does it have LIDAR shade analysis?
No. Manual shade objects + horizon shading. For 90% of residential installs, sufficient. For utility-scale or NEM 3.0, Aurora is the right tool. Diaz is for solo + SMB doing 5-30 residential systems/month.
Can I generate permit packs?
Yes. Built-in PDF with layout, single-line, BOM, performance report. NL: NEN1010. US: NEC. ES: RD 244/2019 references.
Battery sizing and heat-pump integration?
Library includes batteries (Sessy/Sungrow/Sigenergy/Tesla/Victron), inverters, heat pumps. Place on building model, get cable runs + BOM. Rule-of-thumb sizing — for engineering-grade, PV*SOL premium has depth.
Try Diaz Editor — €99 lifetime
100 founding spots. Built for solo solar installers. Solar + battery + heat pump + EV in one project.
Claim founding spot — €99For other trades
Wat je krijgt voor €99
Eenmalig. Levenslang. 3 seats. Geen abonnement.
-
Diaz Editor Pro — levenslange licentie voor je hele werkdag
€997 -
3 seats — jij + je voorman + je werkvoorbereider
+€600 - Alle disciplines in één tool — bouw, timmer, elektra, sanitair, mechanisch, solar 4 tools uitgespaard
- DXF + IFC import — werkt met elke architect, aannemer of installateur Inbegrepen
- 1-klik PDF export — offerte, werktekening en stuklijst in één pakket Inbegrepen
- DXF + CNC export voor de werkplaats — zaaglijsten, snijbladen, frees-paden Inbegrepen
- Alle toekomstige updates — v0.4, v0.5, v0.6... Inbegrepen
- Founding-member feedback-board — jouw stem op de roadmap Exclusief
Gemaakt voor zelfstandigen + kleine teams (1-10 personen). Niet voor architecten of utility-scale engineering — daar zijn AutoCAD en Aurora beter in.
Reguliere prijs (na founding):
€997 €99 vandaag
100 plekken totaal. Stripe checkout. Direct download na betaling.
Verwante gidsen
- CAD-software voor ZZP-timmerman [NL]
- Offerte-software voor aannemers [NL]
- 3D-tekenen voor werkvoorbereider bouw [NL]
- CAD voor klein bouwbedrijf (5-25 pers) [NL]
- Solar design software voor Nederlandse installateurs [NL]
- Thuisbatterij-ontwerp & saldering 2027 [NL]
- NEN 1010 zonnesysteem-eisen [NL]
- Software CAD para autónomos en construcción [ES]
- Software de diseño solar para instaladores en España [ES]
- CAD gratis para instaladores fotovoltaicos [ES]
- Diseño solar autoconsumo (RD 244/2019) [ES]
- CAD software for small construction business [EN]
- Multi-discipline solar design workflow [EN]
- CAD-Software für Handwerker [DE]