ESG Score Calculator

ESG composite score calculator combines Environmental, Social, and Governance dimensions into single rating. E:75 + S:60 + G:80 with equal weights = 71.7 composite. ESG ratings used by investors to screen holdings, by companies to track progress, by employees evaluating employer impact. MSCI, Sustainalytics, Refinitiv all publish ESG ratings.

Example: company scoring E:75 (strong climate practices), S:60 (decent labour relations), G:80 (excellent board composition). Equal-weighted composite: (75+60+80)/3 = 71.7. B rating (above average). Different providers weight differently - MSCI weights by industry materiality (oil company E weighted higher than software company E). Composite score useful for cross-company comparison.

ESG investing growth: sustainable and ESG-aligned assets now run into the tens of trillions globally (industry estimates vary). Active ESG funds, ESG ETFs, exclusion-based funds (no tobacco/weapons). Performance debate: ESG-aligned funds historically match or slightly outperform broad market - some studies show ESG screening reduces tail risk. Critical issues: greenwashing (companies claiming ESG without substance), inconsistent ratings (same company different scores from different providers), regulation tightening (disclosure frameworks such as TCFD and regional climate-disclosure rules).

Quick example

With environmental score of 75 and social score of 60 (plus governance score of 80 and environmental weight of 33%), the result is 71.8 / 100. Change any figure and watch the output shift — it's often more useful to see the pattern than to memorise the formula.

Which inputs matter most

You enter Environmental Score (0-100), Social Score (0-100), Governance Score (0-100), Environmental Weight %, Social Weight %, and Governance Weight %. Not every input has equal weight. Adjusting one input at a time toward extreme values shows which ones move the result most.

What's happening under the hood

Weighted average of E, S, G scores. Weights must sum to 100%. The formula is listed in full below. If the number looks off, you can retrace the calculation by hand — that's the point of showing the working.

Where this fits in planning

This is a "what-if" tool, not a forecast. It helps to test ideas: what happens if you shift weight toward governance, or if one component score moves up or down. The value is in the scenarios you run, not the single answer you get from the defaults.

What this doesn't capture

This is a simplified model that holds its assumptions constant. Real outcomes vary with market conditions, costs, taxes, and timing, so the figure is best read as one scenario rather than a forecast.