Resource Center
The Heaven Designs knowledge base, 501 engineering-led articles, 198 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
PVsyst report guides for EPCs, IPPs and lenders: P50/P90 yield, weather files, shade scenes and the loss assumptions reviewers check.
Open hubSolar Permit Guides
State-by-state and DISCOM-by-DISCOM guidance on permit plan sets, AHJ submission and revision cycles, written by a team that prepares permit plan sets.
Open hubSolar Engineering
The technical guides our engineers wish had existed 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, shading depth, NEC fluency, and ROI, against Aurora at $159 to $259 per user per month.
Read articleAurora Solar Pricing 2026: Real Cost Per User Per Month
Aurora Solar pricing in 2026 runs about $159 to $259 per user per month. A plan-by-plan table, the add-ons that raise Aurora solar cost, and a 3-year total.
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 bankable PVsyst report: P50/P90 method, Indian lender and IE requirements, common errors that stall project finance, and how to commission one.
Read articleSolar Design Software in India (2026): 6-Tool EPC Stack
Solar design software in India for 2026: PVsyst, AutoCAD, HelioScope, STAAD Pro, HOMER Pro and SurgePV compared for EPCs, with a stack by project type.
Read articleREFERENCE
Glossary by category
198 engineering terms, organised across six disciplines.
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