Energy Stack knowledge base

Plain-English reference for solar, batteries, EV charging and heat pumps. Hardware, design, standards, grants and the bits installers assume you already understand.

Start here

String, hybrid and microinverters — how to decide
Single vs three-phase supply — what it changes
Heat loss surveys — how to read one
Octopus Intelligent eligibility — and how to pass

S · Solar

Solar PV reference

19 entries

S-05Inverters S-04Panels S-09Array sizing S-13MCS certification S-15DNO notification S-16Export tariffs and SEG

B · Battery storage

Battery reference

15 entries

B-03LFP vs NMC B-06Hybrid inverters B-07Sizing for load shape B-13Tariff arbitrage B-14Virtual power plants B-15V2H and V2G status

EV · EV charging

EV charging reference

14 entries

E-027 kW home chargers E-04Cable runs and consumer unit E-07Smart Charge Regulations 2021 E-08Octopus Intelligent E-10Load management E-13V2H setups in the UK

H · Heat pumps

Heat pump reference

17 entries

H-02ASHP vs GSHP H-04Heat loss surveys H-08BUS grant H-11Weather compensation H-12Radiator sizing and ΔT H-17Flow temperature in practice

R · Reference

Cross-cutting reference

13 entries

Concepts that span multiple topics. Linked from inside each topic where relevant.

R-01Single vs three-phase supply R-02DNO notifications (G98/G99) R-04MCS certification R-07Smart Export Guarantee R-10Permitted development R-13A–Z of acronyms

Solar PV reference

Battery reference

EV charging reference

Heat pump reference

Cross-cutting reference

Recently updated