Solar PV & Battery Storage Pro

Webrich Software

In-app purchases

About this app

Solar PV and battery storage, from the exam to the install.

Battery Storage Prep is a complete study and field companion for anyone working with domestic and commercial solar PV and electrical energy storage systems in the UK — installers, designers, electricians, assessors, and anyone preparing for a renewables certification.

EXAM PREP — 714 QUESTIONS
• 19 topics across three sections: Shared Requirements, Energy Storage, and Solar PV
• Every answer carries a written explanation citing its source — the IET Codes of Practice, BS 7671, or the MCS standards
• Flash cards for fast recall, with self-rating
• Timed mock exams drawing 30 questions from across the whole bank
• Progress tracked per topic, plus a full history of every attempt
• Voice-over, so you can revise hands-free

TEN FIELD CALCULATORS
• PV String Sizing
• Inverter Sizing Ratio
• Battery Sizing & Autonomy
• Export Limitation Check (G98 / G99 / G100)
• Cable Sizing
• Voltage Drop
• Adiabatic (CPC size)
• Prospective Fault Current
• R1 + R2
• Ohm's Law / Power
Every result exports to PDF.

229 QUICK REFERENCE CARDS
Earthing and bonding, the DC commissioning sequence, grid connection, isolation and switching, labels and signage, and MCS duties — all searchable, and all stored on the device so they work on site with no signal.

FIELD TOOLS
• DNO Connection — work out the G98 / G99 / SGI route
• Earthing & PME — PME and TT decision tool
• MCS Certification Duties — MIS 3002 / 3012 contractor duties
• Commissioning records and site surveys, exported as PDF
• CPD logger, tracking hours against your goals

Free to download and try. A subscription unlocks the full 714-question bank, all ten calculators, every reference card, unlimited records, and PDF exports without a watermark.

This is an independent exam-preparation app and is not affiliated with or endorsed by MCS, the IET or any DNO.

What’s new

New feature: Voice Over