Changelog — GainTally

v1.0.0 — June 16, 2026

20 free clean energy calculators across solar, EV, and home efficiency categories
30 US state-specific solar calculator pages with utility-aware data
200-term glossary covering financing, technical, regulatory, and utility jargon
13 side-by-side comparison pages (solar lease vs PPA vs buy, EV charging levels, heat pump vs gas, and more)
Methodology, Citations, Author, Privacy, and Accessibility transparency pages
WCAG 2.1 AA accessibility baseline — skip links, focus management, reduced motion support
Server Component default for all 60+ pages; client JavaScript only for interactive inputs
Scenario builder “Show what-if” sensitivity analysis — see how ±10% or ±20% changes in key inputs affect your results (Phase 18.7)
Saved scenarios drawer — save and reload calculator inputs from any page via “My Scenarios” in the footer (Phase 18.7)
Independence & Self-Funding FAQ on the FAQ and About pages — answers to “Are you selling solar panels?”, “Do you collect my data?”, “How do you make money?”, and “Why is this independent?” (Phase 18.8)
Trust badges on homepage and About page: “No lead generation / No PII collected / Independent” — visible commitment to user privacy (Phase 18.8)
Anonymous persona-based testimonials on homepage and About page — 5 use-case stories (solar, EV, heat pump, insulation, multi-calc) without any personal identifying information (Phase 18.8)

Faster initial page load — 3 heavy engagement components (Scenario Builder, Saved Scenarios, Embed Modal) now load on-demand instead of upfront (Phase 18.8)
Carbon footprint formula accuracy — CO₂ constants unified to a single source of truth (EPA Greenhouse Gas Equivalencies Calculator; kg canonical) across all calculator pages (Phase 18.8)
TypeScript strict mode deepened — 3 additional compiler flags activated (exactOptionalPropertyTypes, noImplicitOverride, verbatimModuleSyntax) for fewer runtime surprises (Phase 18.8)