EV & Solar Service
Solar PV
Commercial and industrial solar PV installation — system design, DNO G99/G98 application, roof and ground mount installation, grid connection, commissioning and MCS-compliant documentation for commercial premises.
What a commercial solar PV project actually has to deliver
01
Grid connection that takes months and delays the project
DNO G99 applications for larger commercial installations require load flow data, protection settings and formal approval — a process that takes several months if managed reactively. We initiate the DNO application process at the outset of the design stage, so grid connection approvals are in place before equipment is ordered.
02
A design that doesn't optimise the available roof area
Panel layout, string configuration and inverter selection all affect the energy yield from a given roof area. We produce a site-specific yield model before specifying any equipment — so the system is designed to maximise output from your actual roof orientation, pitch and shading profile.
03
No monitoring to verify the system is performing
A solar PV system that is underperforming may not be immediately obvious — string faults, soiling and inverter issues reduce output silently. We commission inverter monitoring and generation data logging as part of every installation.
04
Documentation that doesn't satisfy your insurer or funder
Commercial PV installations require MCS or equivalent documentation, G99/G98 commissioning confirmations, test certificates and as-installed drawings. We produce the full documentation package at handover — in the format required by funders, insurers and building management.
Technical detail
Standards & compliance
- BS 7671 18th Edition — DC and AC circuit requirements
- Engineering Recommendation G99 / G98 — grid connection
- IET Code of Practice for Grid Connected Solar PV Systems
- MCS MIS 3002 installation standard
- Planning and permitted development compliance
System design
- Site-specific yield modelling and shading analysis
- Panel layout and string configuration design
- Inverter selection for string and central configurations
- DC isolator and protection device specification
- AC connection and export limiting design
Installation
- Roof and ground-mount racking systems
- DC cabling, string combiner boxes and DC isolation
- AC circuit and inverter connection
- Export limitation and grid protection relay installation
- Monitoring system commissioning and data logging
Grid connection & documentation
- DNO G99/G98 application management
- Protection relay settings and commissioning verification
- MCS-compliant installation certificate
- As-installed single-line diagram
- Handover pack and O&M documentation
The Numbers
G99
Engineering Recommendation G99 governs grid-connected generation above 16A per phase — we manage the full application and commissioning process.
MCS
MCS MIS 3002 installation certification is produced at handover — required for feed-in tariff registration, export agreements and some insurance policies.
100%
Inverter monitoring and generation data logging commissioned at handover — so you have a performance baseline from the first day of generation.
Why specify Con-Tec
Generation Projects Delivered End to End
Our Solar PV Approach
01
Survey & Yield Modelling
Site survey, roof condition review, shading analysis and site-specific yield model before any design work begins.
02
Design & DNO Application
System design, panel layout, string configuration and G99/G98 application submitted to the DNO at the start of the design stage.
03
Installation
Racking, panels, DC circuits, inverter and AC connection installed to MCS and BS 7671 by NICEIC-approved engineers.
04
Commission, Test & Handover
Full commissioning, monitoring system activation, MCS certificate and documentation package at handover.
Related Case Studies
Logistics operator
80-bay EV charging infrastructure for logistics hub
Eric Wright Group
Mixed-use commercial fit-out
North West Local Authority
Multi-site EICR programme across 47 public buildings
1 / 4
What our clients say
“Con-Tec consistently meets the rigour our estates teams expect. Their compliance documentation, site discipline and turnaround on remedial works are exactly what large-scale healthcare contracts require.”
Get a Quote
Ready to Start a Project?
We respond to every commercial and industrial enquiry within one working day. Share your scope and programme and we'll come back with lead engineers, approach and a clear cost envelope.