SustainProjKit

Project-based carbon calculator with templates for sustainability club grants

Score: 8.0/10ArgentinaMedium BuildReady to Spawn
Brand Colors

The Opportunity

Problem

University students in sustainability clubs can't afford expensive subscription-based carbon footprint calculators required for their projects.

Solution

SustainProjKit offers customizable calculators for specific club projects like solar installs or zero-waste campaigns, with built-in grant report formats. Students input project phases and get accurate footprints plus ROI projections. Low-cost subscriptions make it accessible for grant-funded clubs.

Target Audience

University students participating in sustainability clubs

Differentiator

Grant-report templates and project phasing, integrated with funding justifications

Brand Voice

professional

Features

Project Templates

must-have12h

For grants, campaigns, installs

Phase Tracker

must-have15h

Break projects into stages

Grant Report Gen

must-have12h

Formatted for common uni grants

ROI Calculator

must-have10h

Carbon savings vs cost

Collaboration

must-have10h

Team editing for club members

Benchmarking

nice-to-have7h

Compare to similar projects

Scenario Modeling

nice-to-have8h

'What if' reductions

Integrations

future6h

Google Sheets export

Total Build Time: 80 hours

Database Schema

users

ColumnTypeNullable
iduuidNo
emailtextNo
roletextYes
created_attimestampNo

projects

ColumnTypeNullable
iduuidNo
owner_iduuidNo
nametextNo
templatetextNo
roi_estimateintYes
created_attimestampNo

Relationships:

  • owner_id references users(id)

project_phases

ColumnTypeNullable
iduuidNo
project_iduuidNo
phase_nametextNo
carbon_footprintintYes

Relationships:

  • project_id references projects(id)

collaborators

ColumnTypeNullable
iduuidNo
project_iduuidNo
user_iduuidNo

Relationships:

  • project_id references projects(id)
  • user_id references users(id)

API Endpoints

POST
/api/projects

Create project

🔒 Auth Required
GET
/api/projects/:id

View project

🔒 Auth Required
POST
/api/projects/:id/calculate

Compute phases

🔒 Auth Required
GET
/api/projects/:id/report

Grant report

🔒 Auth Required
POST
/api/projects/:id/collaborators

Add collaborator

🔒 Auth Required

Tech Stack

Frontend
Next.js 14 + Tailwind CSS + shadcn/ui
Backend
Next.js API routes + Supabase Edge Functions
Database
Supabase Postgres
Auth
Supabase Auth
Payments
Stripe
Hosting
Vercel
Additional Tools
Liveblocks for collabRecharts

Build Timeline

Week 1: Core project setup

25h
  • Auth
  • Project create

Week 2: Phases and calc

30h
  • Phase input
  • ROI logic

Week 3: Reports/collab

25h
  • Reports
  • Sharing

Week 4: Templates/UI

20h
  • Templates
  • Payments

Week 5: Polish/test

15h
  • Bug fix
  • Deploy

Week 6: Optimizations

10h
  • Benchmarks

Week 7: Final tweaks

10h
  • Launch prep
Total Timeline: 7 weeks • 160 hours

Pricing Tiers

Free

$0/mo

No collab

  • 1 project
  • Basic calc

Pro

$20/mo
  • 5 projects
  • Reports
  • Collab

Enterprise

$99/mo
  • Unlimited
  • Custom templates
  • Priority support

Revenue Projections

MonthUsersConversionMRRARR
Month 11002.5%$50$600
Month 61,0004.5%$900$10,800

Unit Economics

$6
CAC
$300
LTV
4%
Churn
93%
Margin
LTV:CAC Ratio: 50.0xExcellent!

Landing Page Copy

Build Grant-Winning Projects with Carbon Proof

Templates, reports, and ROI for sustainability initiatives. From $20/mo.

Feature Highlights

Grant-ready reports
Phase tracking
Team collab
ROI projections

Social Proof (Placeholders)

"'Nailed our uni grant!' – SolarSquad"
"'Pro-level without the cost' – WasteWarriors"

First Three Customers

Email sustainability club presidents from top 20 US unis (find via Google), offering free year Pro for case study. Post in grant-focused forums like r/grants. Host webinar on 'Carbon for Grants' via Eventbrite.

Launch Channels

Product Huntr/grantsr/SustainabilityLinkedIn Uni GroupsHacker News

SEO Keywords

carbon calculator for sustainability projectsstudent grant carbon reportclub project footprint tool

Competitive Analysis

MyClimate

myclimate.org
Custom quotes
Strength

Certification

Weakness

Expensive, slow

Our Advantage

Instant, cheap templates

Terrapass

terrapass.com
Per ton offsets
Strength

Offsets

Weakness

No project planning

Our Advantage

Full project lifecycle

🏰 Moat Strategy

Speed to market with proprietary grant templates creating switching costs

⏰ Why Now?

Uni grant cycles peaking with 2024 sustainability funding surges from govt initiatives

Risks & Mitigation

legalmedium severity

Emission data accuracy liability

Mitigation

Source citations + user responsibility

financiallow severity

Grant seasonality

Mitigation

Diversify to ongoing projects

Validation Roadmap

pre-build10 days

Interview 20 club leaders on grants

Success: Confirm template need

mvp21 days

5 project betas

Success: Used in real grants

launch7 days

Targeted email

Success: 20 paid week1

Pivot Options

  • NGO project tracker
  • Small biz ESG reports
  • Personal finance carbon

Quick Stats

Build Time
160h
Target MRR (6 mo)
$900
Market Size
$60.0M
Features
8
Database Tables
4
API Endpoints
5
SustainProjKit - Complete Startup Blueprint | Startup Tribunal | StartupTribunal