קריאת המונה שונה מהערכת הצריכה של המונה החכם.

Because קריאת is the construct form of קריאה.

In Hebrew, when one noun is linked to another noun in an of relationship, the first noun often changes into a special form called construct state (also called smikhut).

So:

• קריאה = a reading / reading
• קריאת המונה = the reading of the meter

The ending -ת here is a very common sign of the construct form in feminine nouns ending in -ה.

So:

• קריאה → normal form
• קריאת → construct form, used before another noun

It is a noun phrase in construct state, literally:

• קריאת = reading of ...
• המונה = the meter

So together:

• קריאת המונה = the meter reading

This is more compact and natural in Hebrew than using של here.

Compare:

• קריאת המונה = the meter reading
• הקריאה של המונה = the reading of the meter

Both are possible in some contexts, but the construct form is often the more standard or natural choice in formal written Hebrew.

Because it agrees with קריאת, which is a feminine singular noun.

Hebrew adjectives usually agree with the noun they describe in:

• gender
• number
• definiteness

Here:

• קריאת is feminine singular
• so the adjective is שונה = feminine singular

Compare:

• דבר שונה = a different thing / a thing that is different (masculine)
• קריאה שונה = a different reading / a reading that is different (feminine)

In this sentence, שונה means different or differs.

Because שונה commonly takes the preposition מ־, meaning different from.

So:

• שונה מ... = different from ...

In your sentence:

• שונה מהערכת הצריכה... = different from the consumption estimate ...

This is similar to English different from.

Because the preposition מ־ combines with the definite article ה־.

Here is what happens:

• מ־ = from
• הערכת = the estimate of ...

When מ־ comes before a word beginning with ה־, they combine:

• מ + ה → מה

So:

• מהערכת = from the estimate of ...

This is a very common pattern in Hebrew:

• מהבית = from the house
• מהספר = from the book
• מהערכת = from the estimate

For the same reason as קריאת המונה: this is another construct chain.

• הערכה = estimate / assessment
• הערכת = estimate of ...
• הצריכה = the consumption

So:

• הערכת הצריכה = the consumption estimate / the estimate of consumption

Again, הערכת is the construct form of הערכה.

This is an important rule of Hebrew construct chains.

In a construct chain:

• the first noun usually does not take ה־
• the last noun carries the definiteness

So:

• קריאת המונה = the reading of the meter
• הערכת הצריכה = the estimate of the consumption

Even though קריאת and הערכת do not have ה־, the whole phrase is still definite because the second noun is definite.

This is normal Hebrew grammar.

Because Hebrew often avoids overly long or heavy construct chains.

The phrase:

• הערכת הצריכה של המונה החכם

means:

• the consumption estimate of the smart meter

A fully chained version like:

• הערכת צריכת המונה החכם

is possible, but it is denser and may sound more formal or harder to process, depending on context.

Using של is very common and often clearer, especially when the noun phrase gets longer.

So this sentence mixes two patterns:

• construct chain: הערכת הצריכה
• של phrase: של המונה החכם

That is completely normal.

In this sentence, של המונה החכם most naturally goes with the whole phrase הערכת הצריכה.

So the idea is:

• the consumption estimate of the smart meter

In other words, it is the estimate associated with the smart meter.

Depending on context, Hebrew can sometimes allow ambiguity, but here the most natural reading is that the estimate belongs to or comes from the smart meter.

Because the noun phrase is definite: the smart meter.

In Hebrew, when a noun is definite and has an adjective, the adjective also takes ה־.

So:

• מונה חכם = a smart meter
• המונה החכם = the smart meter

Both the noun and adjective show definiteness.

This is a basic Hebrew adjective rule.

Yes. חכם here is an adjective meaning smart.

It describes המונה:

• מונה = meter
• מונה חכם = smart meter
• המונה החכם = the smart meter

It agrees with מונה, which is:

• masculine
• singular
• definite

So the adjective appears as:

• החכם = masculine singular definite

Grammatically, it is an adjective, but in sentences like this it functions much like English is different.

So:

• קריאת המונה שונה...

literally looks like:

• the meter reading different...

But in natural English it becomes:

• the meter reading is different...
• or the meter reading differs...

Hebrew often uses adjectives in present-tense sentences without a separate word for is.

That is because in the present tense, Hebrew usually does not use a verb meaning to be.

There is no separate word for is in the Hebrew present tense.

Hebrew commonly leaves out the present-tense copula.

So:

• קריאת המונה שונה
  literally: the meter reading different
• natural English: the meter reading is different

This is completely normal Hebrew sentence structure.

Not in the same structure.

You can say:

• יש הבדל בין... ל... = there is a difference between ... and ...

But with שונה, the normal pattern is:

• X שונה מ־Y = X is different from Y

So this sentence correctly uses מ־.

Compare:

• קריאת המונה שונה מהערכת הצריכה = the meter reading is different from the consumption estimate
• יש הבדל בין קריאת המונה לבין הערכת הצריכה = there is a difference between the meter reading and the consumption estimate

Both are good Hebrew, but they are different sentence structures.

A common pronunciation would be:

Kri'at ha-moneh shonah me-ha'arakhat ha-tsrikhah shel ha-moneh he-khakham.

A rough breakdown:

• קריאת — kri-AT
• המונה — ha-mo-NEH
• שונה — sho-NAH
• מהערכת — me-ha-a-ra-KHAT
• הצריכה — ha-tsri-KHAH
• של — shel
• המונה החכם — ha-mo-NEH he-kha-KHAM

Pronunciation can vary a little depending on accent and speaking style.

It sounds fairly natural, but somewhat formal/technical, especially because of words like:

• קריאת המונה
• הערכת הצריכה
• המונה החכם

This is the kind of wording you might see in:

• a utility bill
• a customer service message
• technical documentation
• an electricity or gas company notice

In casual speech, someone might choose a simpler wording, but this sentence itself is perfectly normal.