Brill Power vs Fourth Power
Brill Power vs Fourth Power, compared side by side on 13 data points: what each one does, how big it is, what it has raised, the tech running each site, and what users report. We score both out of 100 on traction, team and visibility: Brill Power is on 37/100 and Fourth Power on 51/100.
Where each one leads
Brill Power
- domain rating: 36/100 against 1/100
Fourth Power
- our overall score: 51/100 against 37/100
- funding raised: $49.0M against $14.2M
At a glance
| Measure | Brill Power | Fourth Power |
|---|---|---|
| What it is | Develops advanced battery management systems for electric vehicles and energy storage. | Developing advanced battery technology for grid-scale energy storage. |
| Category | Energy Storage, Battery Technology, Electric Vehicles, Hardware | Energy Storage, Battery Technology, Clean Energy, Grid Modernization |
| Sells toBusiness model | B2B | B2B |
| Offering | Hardware | Hardware |
| Founded | 2017 | 2017 |
| Headquarters | Oxford, United Kingdom | San Carlos, United States |
| Status | Active | Active |
Size, funding and growth
| Measure | Brill Power | Fourth Power |
|---|---|---|
| Total funding | $14.2M | $49.0M |
| Latest round | Seed | Series A-Plus |
StartupHub scores
Our own 0-100 ratings. They measure company strength and site quality, not which product suits you.
| Measure | Brill Power | Fourth Power |
|---|---|---|
| StartupHub scoreOur 0-100 rating | 37/100 | 51/100 |
| Traction | 36/100 | Not published |
| Team | 70/100 | Not published |
| Community | 14/100 | Not published |
| Search visibility | 9/100 | 2/100 |
| Quality | 35/100 | Not published |
| Agent readinessHow well an AI agent can read and act on the site | F (22/100) | F (22/100) |
| Domain ratingLink authority, 0-100 | 36/100 | 1/100 |
Technology
Detected on each public site, so it reflects the marketing stack as well as the product.
| Measure | Brill Power | Fourth Power |
|---|---|---|
| Hosting | Self Managed | Not detected |
| CMS | WordPress | Not detected |
Brill Power vs Fourth Power: common questions
Which is better, Brill Power or Fourth Power?
On our 0-100 score Fourth Power rates higher (51/100 against 37/100). The score weights traction, team, visibility and profile completeness, so it reflects company strength rather than which product suits you. We compare the two on 13 data points above: read the rows that match what you are buying for.
How do Brill Power and Fourth Power compare on the numbers?
Brill Power leads on domain rating (36/100 against 1/100). Fourth Power leads on our overall score (51/100 against 37/100), funding raised ($49.0M against $14.2M).
Read the full Brill Power review and pricing or the Fourth Power review and pricing. You can also browse other Brill Power alternatives we track.

