Guides

Honest, data-driven guides to solar and battery economics.

Available Guides

Solar Prices by Country: 2026 — Complete cost comparison across 39 European countries
Who Owns the Sun? — Industrial vs. residential solar across Europe: data, policy, and political economy
How to Read Our Numbers — Understanding every metric in our calculator
8 Battery Myths — Why batteries aren't always essential
Payback Truth — Understanding installer payback claims
Self-Consumption Reality — Why 60–90% claims are wrong
Academic Review — Peer-reviewed analysis of industry claims
Weekend Home Guide — Special case: low occupancy homes
EV/PHEV Reality — Solar charging for 0, 1, and 2 vehicle homes
What Uses Electricity in Your Home — Appliance-by-appliance energy breakdown

Environmental Lifecycle — The true carbon footprint of panels, batteries, and inverters
Lifecycle Calculator — Interactive tool: your system's waste footprint and end-of-life costs

Is the EU Green Transition Feasible? — Academic review: winter energy realities, storage gaps, costs, waste, and wildlife impacts

Solar Safety at Home — Fire extinguishers, installation best practices, and emergency procedures
Can Solar Power Winter Heating? — The honest reality: 2.9 kWh/day vs 14.8 kWh/day needed
Heat Pumps Need a Renovation — Why swapping your gas boiler isn't plug-and-play
The Carbon Cost of Going Green — Lifecycle carbon math: when renovation emits more than it saves
What If Energy Prices Climb? — Solar payback under crisis and growth scenarios
How to Size Your Solar System — Right-size for your actual demand
Insulation First — Why insulation beats solar for ROI
Household Energy Profiles — Average electricity and heating use by country

New to solar? Read our methodology to understand how we calculate everything.

Last updated: May 2026