Resource Center
The Heaven Designs knowledge base, 432 engineering-led articles, 201 glossary terms, and the playbooks our team uses to deliver permit-ready solar designs.
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Topic hubs
Each hub clusters our long-form guides, glossary terms and related services around a single engineering discipline.
Solar Design Software
Independent reviews, alternatives and pricing breakdowns for every major solar design tool, written by engineers who run them on real projects.
Open hubPVsyst
Bankability-grade PVsyst workflows from a team that has run thousands of P50/P90 simulations for lenders, IPPs and EPCs.
Open hubSolar Permit Design
State-by-state and DISCOM-by-DISCOM guidance on permit plan sets, AHJ submission and revision cycles, from the team that delivers 500+ stamped sets a year.
Open hubSolar Engineering
The technical guides our engineers wish were published when they started, structural, electrical, modelling and field-failure analyses.
Open hubNet Metering & DISCOMs
DISCOM-specific net metering guides for India and tariff/interconnection guidance for major US utilities.
Open hubBattery Energy Storage
Engineering resources for hybrid solar + BESS plants, sizing, inverter pairing, grid code compliance and field commissioning.
Open hubSolar Outsourcing & EPC Operations
How EPCs and installers add design throughput without adding headcount, outsourcing models, pricing, QA workflows.
Open hubSolar Compliance & Codes
Code-level references for the standards that decide whether a plan set survives AHJ review.
Open hubEDITORS' PICKS
Featured guides
Aurora Solar Alternatives 2026: 7 Ranked for Installers
Aurora Solar alternatives ranked by a working design bench on price, AHJ approval rate, NEC fluency, and ROI, against Aurora at $159-$259 per user monthly.
Read articleAurora Solar Pricing 2026: Real Cost Per User Per Month
Aurora Solar pricing runs $159 to $259 per user per month in 2026. Plan-by-plan costs, four add-ons buyers miss, and a $108 per-user-equivalent alternative.
Read articleAurora vs HelioScope 2026: Head-to-Head for Installers
Aurora vs HelioScope compared on price, shading fidelity, AHJ presets, and proposal output, plus the third platform most installers never evaluate.
Read articleBankable PVsyst Reports, The Complete 2026 Guide
What makes a PVsyst report bankable? This guide covers P50/P90 methodology, lender requirements in India, common errors that kill project finance, and how to commission a bankable yield study.
Read articleBest Solar Design Software in India 2026: The Real Stack
The best solar design software in India for 2026: PVsyst, AutoCAD, PVCase, HelioScope and HOMER Pro reviewed for EPCs, with a stack by project type and budget.
Read articleREFERENCE
Glossary by category
201 engineering terms, organised across six disciplines.
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