Cold Calling Case Study: 53 Qualified Leads For LUN Energy in 60 Days

Overview
Hey everyone My name’s Sone, also known as Tamy, and I’m the Operations Director here at Piman, part of a the Pearl Lemon Group.
In this case study, I’ll walk you through a high-volume cold calling campaign we ran for LUN Energy, a UK-based business in the renewable energy sector. The campaign targeted energy assessors and energy surveyors with the goal of booking 4-5 appointments per week.
By the end of the two-month campaign, we delivered:
- 53 booked appointments
- 3,890 calls made
- Weekly hit targets
- Improved objection handling through real-time feedback loops
- Consistent communication via email and WhatsApp
This write-up covers how we structured the outreach, tracked performance, and used continuous feedback to optimise results over the duration of the project.
Campaign Snapshot
Client: LUN Energy
Industry: Renewable Energy / Energy Assessment
Service: Cold Calling + Appointment Setting
Duration: ~60 days
Goal: Book 4-5 qualified appointments per week
Final Results-
- 53 appointments booked
- 3,890 total calls made
- Consistent weekly target achievement
- Weekly reporting + objection-handling improvements
- Email + WhatsApp communication for faster decision-making

The Objective: Appointment Setting for Energy Assessors
LUN Energy needed a scalable way to contact and book appointments with:
- Energy assessors
- Energy surveyors
- Relevant decision-makers in the energy performance certification process
The aim was to connect them with individuals who could benefit from the client’s services and to do so consistently every week.


Campaign Goals
The target was simple but demanding:
4-5 booked appointments per week
Given the niche audience and the nature of cold calling, this required:
- Volume
- Accurate targeting
- Script refinement
- Strong objection handling
- Tight communication
And that’s exactly what we built into the campaign.
Final Results: 53 Appointments in 60 Days
By the end of the campaign, the team delivered:
53 qualified appointments
Which averages: ~4–5 per week exactly on target.
We tracked everything inside weekly performance sheets, including:
- Booked appointments
- People who requested a call later
- Objections and reasons for “no” responses
- Pickup rates
- Script effectiveness
These insights allowed us to adapt our approach weekly.


Call Volume & Engagement
Total calls made: 3,890
This included:
- No answers
- Invalid numbers
- Busy signals
- Follow-up attempts
- Successful conversations leading to bookings
Not every all results in a pickup but volume drives results, especially in cold calling.
Weekly Reporting & Feedback Loops
Every week we provided LUN Energy with:
- A full weekly report documenting performance
- A list of booked appointments
- A breakdown of objections
- Insights on messaging improvements
These reports helped us understand:
- Why prospects said yes
- Why others said no
- Which objections were recurring
- How to refine scripts to increase conversions
This ultimately improved:
- Objection handling
- Call transitions
- Appointment quality


Communication: Email + WhatsApp
We maintained communication through:
- Email (main communication + appointment confirmations)
- Every appointment was emailed to the client immediately.
- WhatsApp (quick updates & clarifications)
Used for:
- Fast responses
- Scheduling adjustments
- Quick questions
- Real-time updates
This hybrid communication ensured the client was always in the loop.
Strategy Adjustments Based on Objections
Throughout the campaign, we refined:
- The script
- The pitch angle
- Tonality
- Objection responses
- Follow-up timing
By analysing the “no” responses every week, we strengthened the messaging based on real conversations not assumptions.
This is one of the reasons the campaign maintained consistent performance for two straight months.
Lessons Learned
- Consistency beats everything in cold calling
- Feedback loops improve conversion rate quickly
- Objections provide strategic direction
- Decision-makers in the energy sector respond best to concise, factual pitches
- Multi-channel communication improves campaign flow
- Volume + discipline = results

Campaign Recap
Here’s the full snapshot:
Metric | Result |
Duration | ~60 Days |
Calls Made | 3,890 |
Appointments | 53 |
Weekly Target | 4-5 (achieved consistently) |
Reporting | Weekly detailed reports |
Communication | Email + WhatsApp |
Improvements | Script refinement + objection handling |

Work With Us
Need reliable appointment setting or outbound lead generation?
Whether you’re in energy, tech, finance, SaaS, or services, our team at Piman / Pearl Lemon Leads can build a consistent, high-quality appointment pipeline.
👉 Book a free consultation: https://pearllemon.com
👉 Lead Generation Services: https://pearllemonleads.com
