Consumer

Solar potential estimation for residential properties

Sunsill · Check the sun and savings at your spot before you buy plug-in solar

WatchingDraft scoreMature market · since 2007 · AI estimate

50PWAS score

Confidence

Based on 8 of 9 factors

Overview

AIThis description was written by a model from public signals. The facts behind it are listed under Evidence.

Problem: Homeowners considering plug-in solar panels need to know whether their property receives enough sunlight and how much electricity and savings they can realistically expect before making a purchase decision.
Solution concept: A product that accurately estimates solar generation potential for a specific address by incorporating local topography and building obstructions, then calculates financial returns based on electricity tariffs. It would provide this assessment instantly and remotely, removing the need for site visits early in the decision process.
Who has it: Homeowners in the UK considering installation of plug-in solar panels, particularly those evaluating the financial return on investment.
How they handle it today: Currently, prospective buyers either make rough guesses about solar potential based on location and building orientation, visit multiple installer websites for quotes, or work with electricians to assess their specific site conditions.
Why now: Plug-in solar panels have just become legal in the UK and will soon be widely available for purchase, creating immediate demand for pre-purchase assessment tools among early adopters.
How it could charge: Freemium model with basic estimates free and premium features (detailed reports, installation quotes, savings tracking) paid; partnerships with solar installers and energy suppliers who pay for referrals; or licensing the shading model to installers and property marketplaces.

Verdict

Computed from the factor scores below, never written by a model. It decides nothing on its own: only the gate makes an opportunity a build candidate.

Score breakdown

A model sorted each factor into a rubric bucket; code turned buckets into numbers. Unknown factors are left out of the score and lower confidence instead.

Market validation

Confidence 95 · 2 evidence · A Hacker News post with 126 points and 44 comments shows scattered interest, but no established products or multiple active competitors are documented.

Revenue evidence

Unknown

No evidence shows that anyone currently pays for solar potential estimation or that competitors have generated revenue.

Growth

Confidence 70 · 1 evidence · Plug-in solar panels just became legal in the UK and will enter the market soon, creating visible momentum in the category.

Problem severity

Confidence 30 · Judged from the description · Homeowners making a significant financial decision about solar installation face costly friction: they must visit multiple installers, make rough guesses, or arrange site visits to estimate returns before committing.

Economic proximity

Confidence 30 · Judged from the description · The product sits directly upstream of a high-value purchase decision; accurate estimates drive installer referrals and enable sales automation through partnerships with installers and suppliers.

Distribution

Confidence 30 · Judged from the description · The product requires collaboration and shared outputs: homeowners assess their property, share results with installers, and property marketplaces could embed the tool to expose it to non-users.

Buildability

Confidence 30 · Judged from the description · The product requires complex integrations: topographic data, satellite imagery, shading analysis, electricity tariff APIs, and accurate 3D building models—beyond commodity components.

Differentiation

Confidence 70 · 2 evidence · A clear gap exists: accurate shading models that account for trees and recent building changes are missing from available data, and combined electricity-generation-plus-financial-return estimates address a key decision point.

Retention and timing

Confidence 30 · Judged from the description · Usage is occasional but tied to a significant purchase decision; timing is strong because plug-in solar panels are entering the market now in the UK.

Risk penalties

Heavy regulationSolar installations are subject to building codes, electrical safety standards, and planning regulations in the UK; estimates must comply with these or disclaimers must be clear.−9
IP or trademark riskShading models may infringe satellite imagery licensing or require licensing agreements with mapping data providers.−2

Score history

50 · confidence 43 · config v1First score · 25 Oct 2026

Solar potential estimation for residential properties

Overview

Verdict

Build this business

Score breakdown

Risk penalties

Score history

Validation gate

Evidence · 4 items

Market validation

Differentiation

Market

Existing products

Build

Legal reconstruction check

Community