REplace vs Spark Cleantech
REplace vs Spark Cleantech, compared side by side on 15 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: REplace is on 44/100 and Spark Cleantech on 39/100.
Where each one leads
REplace
- our overall score: 44/100 against 39/100
- domain rating: 14/100 against 0/100
Spark Cleantech
- agent readiness: 58/100 against 46/100
- funding raised: $34.6M against $2.1M
At a glance
| Measure | REplace | Spark Cleantech |
|---|---|---|
| What it is | A digital marketplace connecting businesses with vetted renewable energy providers, financing, and expertise. | Spark Cleantech develops advanced catalysts and processes for sustainable chemical production. |
| Category | Climate Tech, Clean Energy, Solar Energy, Wind Energy | Climate Tech, Clean Energy, Green Hydrogen, Carbon Capture |
| Sells toBusiness model | B2B | B2B |
| Offering | Platform | Software | hardware | services |
| Founded | 2021 | 2021 |
| Headquarters | Not published | Cambridge, United Kingdom |
| Status | Active | Inactive |
Size, funding and growth
| Measure | REplace | Spark Cleantech |
|---|---|---|
| Employees | 16 | Not published |
| Total funding | $2.1M | $34.6M |
| Latest round | Seed | Series A |
| LinkedIn followers | 1,793 | Not published |
StartupHub scores
Our own 0-100 ratings. They measure company strength and site quality, not which product suits you.
| Measure | REplace | Spark Cleantech |
|---|---|---|
| StartupHub scoreOur 0-100 rating | 44/100 | 39/100 |
| Traction | 44/100 | 38/100 |
| Team | 30/100 | 60/100 |
| Community | Not published | 15/100 |
| Search visibility | 24/100 | 2/100 |
| Quality | 48/100 | 40/100 |
| Agent readinessHow well an AI agent can read and act on the site | D (46/100) | D (58/100) |
| Domain ratingLink authority, 0-100 | 14/100 | 0/100 |
Technology
Detected on each public site, so it reflects the marketing stack as well as the product.
| Measure | REplace | Spark Cleantech |
|---|---|---|
| CDN | Cloudflare | Not detected |
| CMS | Lovable | Not detected |
| Analytics | Google Analytics 4, Linkedin Insight | Not detected |
| Support stack | HubSpot | Not detected |
REplace vs Spark Cleantech: common questions
Which is better, REplace or Spark Cleantech?
On our 0-100 score REplace rates higher (44/100 against 39/100). 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 15 data points above: read the rows that match what you are buying for.
How do REplace and Spark Cleantech compare on the numbers?
REplace leads on our overall score (44/100 against 39/100), domain rating (14/100 against 0/100). Spark Cleantech leads on agent readiness (58/100 against 46/100), funding raised ($34.6M against $2.1M).
Read the full REplace review and pricing or the Spark Cleantech review and pricing. You can also browse other REplace alternatives we track.

