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Voice AISolar SalesReal Estate & PropTechEnergy & UtilitiesCustomer Support

Solar Sales Voice AI Agent

Calls every new lead within seconds of a form fill — or answers their inbound call — runs the full solar consultation, and hands your sales rep only the ones worth calling. As little as 1-second response time. Self-hosted for lowest cost, or managed on ElevenLabs / Retell AI for fastest go-live.

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Solar Sales Voice AI Agent — Voice AI preview
Voice AI

Workflow & Architecture

How this system works

Step 1
Inbound & outbound call

New lead fills out a form and gets a callback in seconds — or calls in directly. Either way, the consultation starts immediately.

Step 2
Speech pipeline

STT transcribes audio with noise isolation, turn detection, and interruption handling.

Step 3
Sales reasoning

Agent answers pricing, roof compatibility, savings, timelines, and objections — and qualifies the lead in real time.

Step 4
Voice response

TTS streams a natural reply back in real time (~1–1.5s on LiveKit STS).

Step 5
Sales-ready handoff

Qualified leads are summarized and routed straight to your human sales rep — unqualified ones are logged, not escalated.

Overview

End-to-end solar sales voice agents that call new leads back within seconds of a form fill, handle inbound calls, and run the full consultation — pricing, roof compatibility, savings, timelines — without a human rep on the line. Qualified leads get routed straight to your sales team. Delivered across three platform approaches so clients can choose self-hosted control, ElevenLabs voice quality, or Retell AI's managed infrastructure.

The Problem

Solar sales teams lose leads to slow follow-up — a form-fill can sit for hours before a rep calls back, and by then the lead has gone to a competitor. Voice AI can call back in seconds and qualify on the spot, but platform choice still affects cost per minute, latency, vendor lock-in, and deployment speed.

The Solution

Built the same lead-response and qualification flow on three stacks — a custom speech-to-speech pipeline on LiveKit, plus managed agents on ElevenLabs and Retell AI — so every new lead gets called back before they call somewhere else, on whichever stack fits the client's operations.

Platform options

How we deliver this use case

The same solar sales consultation flow — built on LiveKit for lowest latency and cost, ElevenLabs for voice quality, or Retell AI when that platform is already in your stack.

PlatformLatencyCost modelWho owns the stackBest for
Self-Hosted · LiveKit~1–1.5sNo per-minute licensingClientLowest latency, cost, and full control
Managed · ElevenLabsReal-timePlatform pricingElevenLabsFast deployment and high-quality voice
Managed · Retell AIReal-timePlatform pricingRetell AIFast deployment for teams already using Retell AI
Recommended approach

Custom STS Pipeline + LiveKit

Ultra-low latency and lower operating cost — full stack ownership, no vendor lock-in.

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Challenge

Clients want to avoid per-minute licensing and vendor lock-in, or need faster response times than managed platforms typically deliver.

What we built

Designed a custom speech-to-speech pipeline on LiveKit with self-hosted STT/TTS, automatic outbound callback on new form submissions, voice isolation, noise suppression, and natural interruption handling.

Key capabilities

  • Ultra-low latency: ~1–1.5 second response time
  • Lower operating cost — no per-minute third-party licensing
  • Voice isolation, noise suppression, and smooth interruption handling
  • Fully self-hosted — client owns the stack
LiveKitCustom STS PipelinePythonReal-Time Audio

Production-ready self-hosted alternative to expensive managed voice platforms

Key Features

  • Outbound callback within seconds of a form fill, plus full inbound line coverage
  • Real-time solar sales consultation across pricing, compatibility, and savings
  • Three platform options: self-hosted LiveKit, ElevenLabs, or Retell AI
  • Natural voice with objection handling and lead qualification flows
  • Ultra-low latency option (~1–1.5s) on custom STS pipeline
  • Managed-platform options for fast deployment on existing voice stacks

What This Enables

  • Calls new leads back within seconds of a form fill — before they go cold or call a competitor
  • Routes only qualified leads to your human sales rep, so reps stop chasing dead ends
  • Handles full consultations without adding sales headcount
  • Captures after-hours and overflow calls instead of losing them to voicemail

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